Name  | Location  | Locator View  | Connector End View  | 
|---|---|---|---|
A/C Compressor Clutch (C60)  | On the upper right front of the engine, on the front of A/C compressor behind pulley, part of the A/C compressor  | ||
A/C Compressor Clutch Diode (C60)  | In the A/C harness, approximately 20.5 cm (8 in) from the A/C compressor clutch breakout, toward the A/C compressor clutch relay  | --  | |
A/C Compressor Clutch Relay (C60)  | In the engine compartment mounted to the front right of the radiator shroud  | ||
A/C High Pressure Switch (C60)  | Mounted on the back side of the A/C compressor  | ||
A/C Low Pressure Switch (C60)  | In the engine compartment mounted to the A/C accumulator/dehydrator  | ||
ABS Relay (JE4)  | In the front chassis harness, right front inboard frame rail, rear of the front crossmember, on the chassis harness bracket  | ||
Accelerator Pedal Position (APP) Sensor  | Behind the left side of the instrument panel (I/P), right of the lower steering column, above the accelerator pedal  | ||
Air Brake Dryer (JE4/JTU)  | On the inboard side of the right frame rail  | ||
Air Brake Pressure Gage Lamp (JE4)  | Behind the center of the I/P, in the gage center above the I/P switchbank, in the air brake pressure gage  | ||
Air Compressor (K16)  | Behind the cab at the outboard left frame rail  | ||
Air Compressor Relay (K16)  | Behind the cab at the outboard left frame rail, on the side of the air compressor  | ||
Air Suspension Dump Switch (G40/G45/GSJ)  | Center of the I/P, below the gage center, in the I/P switchbank  | ||
Air Suspension Dump Valve Solenoid (G40/G45/GSJ)  | On the inboard right frame rail, rear of the axle, in the air suspension dump valve  | ||
Air Temperature Actuator (C60)  | Behind the right side of the I/P on the HVAC module near the engine cover  | ||
Antenna (w/o UL5)  | On the exterior lower right A-pillar  | --  | --  | 
Automatic Transmission Fluid Temperature (TFT) Gage (Allison® UXT)  | Center of the I/P, above the I/P switchbank, in the gage center  | ||
Automatic Transmission Fluid Temperature (TFT) Gage Lamp (Allison® UXT)  | Behind the center of the I/P, above the I/P switchbank, in the gage center, part of the gage assembly  | ||
Automatic Transmission Fluid Temperature (TFT) Sensor (Allison® LCT/UXT)  | Right lower part of the radiator, on the transmission cooler line  | ||
Automatic Transmission Input Shaft Speed (AT ISS) Sensor (Allison® LCT)  | On the upper left side of the transmission, on the transmission bell housing  | ||
Automatic Transmission Input Shaft Speed (AT ISS) Sensor (Allison® MD)  | On the lower right side of the transmission, on the transmission bell housing  | ||
Automatic Transmission Shift Lever Position Indicator (Allison® LCT)  | In the center console, part of the automatic transmission shift lever  | ||
Automatic Transmission Shift Selector (Allison® MD)  | On the left side of the center console housing, at the top  | ||
Auxiliary Power Outlet 1  | Right side center of the I/P  | ||
Auxiliary Power Outlet 2  | Right side center of the I/P  | ||
Auxiliary Power Post (+/-)  | Right side of the I/P  | --  | |
Backup Alarm (UZF)  | On the back of the rear crossmember, on a bracket  | ||
Backup Lamp - Left  | At the rear of the left frame rail, part of the tail lamp assembly - left  | ||
Backup Lamp - Right  | At the rear of the right frame rail, part of the tail lamp assembly - right  | ||
Backup Lamp Switch (Allison® LCT)  | On the lower left side of the transmission  | ||
Backup Lamp Switch (Allison®MD)  | Internal to the automatic transmission  | --  | --  | 
Backup Lamp Switch (Manual Transmission)  | On the rear of the transmission  | ||
Battery - Auxiliary (VNF)  | On the outboard side of the right frame rail, in the battery box  | --  | |
Battery - Center (TNR/TPL)  | On the outboard side of the right frame rail, in the battery box  | --  | |
Battery - Inboard (Family 3)  | On the outboard side of the right frame rail, in the battery box  | --  | |
Battery - Outboard (Family 3)  | On the outboard side of the right frame rail, in the battery box  | --  | |
Battery Isolator (VNF)  | On the outboard side of the right frame rail, in the battery box  | --  | |
Blower Motor - Auxiliary (C36)  | Under the rear seat to the right rear of the cab  | ||
Blower Motor (C40/C60)  | In the right rear of the engine compartment in back of the fuse block - underhood  | ||
Blower Motor Relay - Auxiliary (C36)  | Under the rear seat to the right rear of the cab mounted to the blower motor - auxiliary  | ||
Blower Motor Resistor - Auxiliary (C36)  | Under the rear seat to the right rear of the cab  | ||
Blower Motor Resistor Assembly (C40/C60)  | In the right rear of the engine compartment in the HVAC module in back of the fuse block - underhood  | ||
Brake Fluid Level Switch (JE3)  | At the front of the vehicle, on the front of the brake master cylinder reservoir  | ||
Brake Pressure Modulator Valve (BPMV) - LF (JE4)  | On the left front of the front cross member  | ||
Brake Pressure Modulator Valve (BPMV) - LR (JE4)  | On the rear frame center crossmember in front of the axle  | ||
Brake Pressure Modulator Valve (BPMV) - RF (JE4)  | On the right side and to the front of the front crossmember  | ||
Brake Pressure Modulator Valve (BPMV) - RR (JE4)  | On the rear frame center crossmember in front of the axle  | ||
Camshaft Position (CMP) Sensor - Bottom (LG5)  | On the back end of the cylinder head  | ||
Camshaft Position (CMP) Sensor - Top (LG5)  | On the back end of the cylinder head  | ||
Camshaft Position (CMP) Sensor (L18)  | On the front of the engine, at the left side, below the water pump, on the timing chain cover  | ||
Camshaft Position (CMP) Sensor (LG4)  | On the back end of the cylinder head  | ||
Camshaft Position (CMP) Sensor (LLY)  | Mounted to front engine cover above and to the right of the crankshaft  | ||
Chime Module (UL5/UXZ)  | Behind the left side of the I/P above the accelerator pedal  | ||
Cigar Lighter (DT4)  | On the center console  | ||
Clearance Lamp - Left  | On top of the roof, on the forward left outboard side of the cab  | ||
Clearance Lamp - Right  | On top of the roof, on the forward left outboard side of the cab  | ||
Clutch Pedal Position (CPP) Switch (Manual Transmission)  | Behind the left side of the I/P, left of the lower steering column, on the clutch pedal support bracket, at the beginning of clutch pedal travel  | Manual Transmission Component Views or  | |
Clutch Start Switch (Manual Transmission)  | Behind the left side of the I/P, left of the lower steering column, on the clutch pedal support bracket, at the end of clutch pedal travel  | ||
Controller Area Network (CAN) Connector (L18 w/JE4, LG4, LG5)  | On the lower left side of the I/P, left of the lower steering column, by the data link connector (DLC)  | ||
Coolant Bypass Valve Solenoid (C36)  | Under the cab below the right rear seat  | ||
Coolant Level Switch  | On the left side of the radiator on the lower left bottom side of the radiator surge tank  | ||
Cooling Fan (LMM)  | At the right front of the engine compartment  | ||
Crankshaft Position (CKP) Sensor (L18)  | At the rear of the engine  | ||
Crankshaft Position (CKP) Sensor (LLY)  | Mounted to the front engine cover to the right of the crankshaft  | ||
Crankshaft Position (CKP) Sensor (LG4 and Automatic Transmission)  | On the top center of the flywheel housing  | ||
Crankshaft Position (CKP) Sensor (LG4 and Manual Transmission)  | On the lower left front of the flywheel housing  | ||
Crankshaft Position (CKP) Sensor (LG5)  | By the flywheel  | ||
Cruise Control Diode 1 (K34)  | Internal to the I/P harness  | --  | |
Cruise Control Diode 2 (K34)  | Internal to the I/P harness  | --  | |
Data Link Connector (DLC)  | On the lower left side of the I/P, left of the lower steering column, by the controller area network (CAN) connector  | ||
Data Link Resistor (LLY/L18)  | In the I/P harness, behind the right side of the I/P, approximately 54 cm (21 in) past the breakout to the data link connector towards the passenger side  | ||
Data Link Resistor 1 (L18 w/JE4, LG4, LG5)  | In the I/P harness, taped to the main harness, approximately 9.5 cm (3.7 in) from the EBCM breakout, towards the forward lamp harness breakout  | ||
Data Link Resistor 2 (L18 w/JE4, LG4, LG5)  | In the chassis harness, taped to the main harness, approximately 9.5 cm (3.7 in) from the EBCM breakout, towards the forward lamp harness breakout  | ||
Daytime Running Lights (DRL) Diode  | Under the left side of the I/P above the data link connector (DLC)  | ||
Daytime Running Lights (DRL) Module  | Left of the I/P, behind the headlamp switch  | ||
Differential Lock Switch (HNB/HPL/HPN)  | On the left side of the interior bulkhead, behind the I/P, on the air brake supply manifold  | ||
Differential Lock Switch Lamp (HNB/HPL/HPN)  | Behind the center of the I/P, below the gage center, in the I/P switchbank, part of the pneumatic switch  | ||
Dome Lamp  | In the interior center of the roof  | ||
Dome Lamp - Rear (Crew Cab)  | In the interior center rear of the roof  | ||
Dome/Reading Lamp - Rear (Crew Cab/C95)  | In the interior center of the roof  | ||
Dome/Reading Lamp (C95)  | In the interior center of the roof  | ||
Door Latch Assembly - Driver (AU3)  | Inside the center rear of the driver door  | ||
Door Latch Assembly - LR (Crew Cab/AU3)  | Inside the center rear of the left rear door  | ||
Door Latch Assembly - Passenger (AU3)  | Inside the center rear of the right front door  | ||
Door Latch Assembly - RR (Crew Cab/AU3)  | Inside the center rear of the right rear door  | ||
Door Lock Relay (AU0/AU3)  | Behind the center of the engine, between engine cover and the HVAC module  | ||
Door Lock Switch - Driver (AU3)  | On the left front door trim panel  | ||
Door Lock Switch - Passenger (AU3)  | On the right front trim panel  | ||
Driver Information Center (DIC)  | Center of the I/P, left of the I/P switchbank  | ||
Electronic Brake Control Module (EBCM)  | On the front left frame rail behind the wheel well  | Antilock Brake System Component Views or  | Antilock Brake System Connector End Views or  | 
Engine Control Module (ECM) (LG4)  | Center of the I/P behind the HVAC controller  | Engine Controls Component Views or  | Engine Control Module Connector End Views or  | 
Engine Control Module (ECM) (LLY/LG5/LMM)  | In the right rear of the engine compartment below the fuse block - underhood  | Engine Controls Component Views or Engine Controls Component Views or  | Engine Control Module Connector End Views or Engine Control Module Connector End Views or  | 
Engine Coolant Temperature (ECT) Sensor (L18)  | In the right cylinder head between cylinder 6 and 8  | ||
Engine Coolant Temperature (ECT) Sensor (LG4)  | On the upper left side of the engine, in the cylinder head, below the water inlet  | ||
Engine Coolant Temperature (ECT) Sensor (LG5)  | On the right side of the engine, on the rear of the coolant outlet housing  | ||
Engine Coolant Temperature (ECT) Sensor (LLY)  | Top of the front center of the intake manifold, near the oil fill tube  | ||
Engine Oil Level Switch (L18/LLY)  | On the lower right side of the engine, near the center, in the oil pan  | Engine Controls Component Views or  | |
Engine Oil Level Switch (LG4/LG5)  | On the lower left side of the engine, near the center, in the oil pan  | Engine Controls Component Views or  | |
Engine Oil Pressure (EOP) Sensor (L18)  | On the top of the rear of the engine, next to the crankshaft position sensor  | ||
Engine Oil Pressure (EOP) Sensor (LG4)  | On the lower right side of the engine, toward the front  | ||
Engine Oil Pressure (EOP) Sensor (LG5)  | On the left side of the engine block, on a tee, pointing up  | ||
Engine Oil Pressure (EOP) Sensor (LLY)  | On the lower left rear side of the engine block  | ||
Ether Injector Control Solenoid Valve (LG5/KTE)  | On the right side of the exterior bulkhead  | ||
Evaporative Emission (EVAP) Canister Purge Solenoid Valve (L18)  | In the engine compartment on the left side of the bulkhead  | ||
Exhaust Brake Actuator Control Solenoid Valve (K40/NPE)  | On the inside of the right frame rail behind the shock absorber  | ||
Exhaust Brake Relay (K40/NPE w/o LLY)  | In the engine compartment on the right side of the fan shroud  | ||
Exhaust Brake Switch (K40)  | Center of the I/P, below the gage center, in the I/P switchbank  | ||
Exhaust Gas Recirculation (EGR) Valve (LG4)  | On the upper left side of the engine, center, on the intake manifold  | ||
Exhaust Gas Recirculation (EGR) Valve (LLY)  | Right side of the engine above cylinder 1  | ||
Fuel Heater (LG4/C30)  | On the lower left side of the engine, part of the secondary fuel filter  | ||
Fuel Heater (LG5/KUN)  | On the left side of the engine, part of the heated fuel/water separator - secondary  | ||
Fuel Heater (LLY)  | On top of the fuel filter on the left side of the engine, part of the fuel/water separator  | ||
Fuel Injector 1 (L18)  | On the left front top of the engine at cylinder 1 intake port  | ||
Fuel Injector 1 (LG4)  | On the upper left side of the engine, in the cylinder head, under the valve cover, at cylinder 1  | --  | |
Fuel Injector 1 (LG5)  | On the upper left side of the engine at cylinder 1  | ||
Fuel Injector 1 (LLY)  | On the right front side of the engine valve cover at cylinder 1  | ||
Fuel Injector 2 (L18)  | On the right top of the engine at cylinder 2 intake port  | ||
Fuel Injector 2 (LG4)  | On the upper left side of the engine, in the cylinder head, under the valve cover, at cylinder 2  | --  | |
Fuel Injector 2 (LG5)  | On the upper left side of the engine at cylinder 2  | ||
Fuel Injector 2 (LLY)  | On the left front side of the engine valve cover at cylinder 2  | ||
Fuel Injector 3 (L18)  | On the left top of the engine at cylinder 3 intake port  | ||
Fuel Injector 3 (LG4)  | On the upper left side of the engine, in the cylinder head, under the valve cover, at cylinder 3  | --  | |
Fuel Injector 3 (LG5)  | On the upper left side of the engine at cylinder 3  | ||
Fuel Injector 3 (LLY)  | On the right front side of the engine valve cover at cylinder 3  | ||
Fuel Injector 4 (L18)  | On the right rear top of the engine at cylinder 4 intake port  | ||
Fuel Injector 4 (LG4)  | On the upper left side of the engine, in the cylinder head, under the valve cover, at cylinder 4  | --  | |
Fuel Injector 4 (LG5)  | On the upper left side of the engine at cylinder 4  | ||
Fuel Injector 4 (LLY)  | On the left front side of the engine valve cover at cylinder 4  | ||
Fuel Injector 5 (L18)  | On the left middle top of the engine at cylinder 5 intake port  | ||
Fuel Injector 5 (LG4)  | On the upper left side of the engine, in the cylinder head, under the valve cover, at cylinder 5  | --  | |
Fuel Injector 5 (LG5)  | On the upper left side of the engine at cylinder 5  | ||
Fuel Injector 5 (LLY)  | On the right side of the engine valve cover at cylinder 5  | ||
Fuel Injector 6 (L18)  | On the right middle top of the engine at cylinder 6 intake port  | ||
Fuel Injector 6 (LG4)  | On the upper left side of the engine, in the cylinder head, under the valve cover, at cylinder 6  | --  | |
Fuel Injector 6 (LG5)  | On the upper left side of the engine at cylinder 6  | ||
Fuel Injector 6 (LLY)  | On the left rear side of the engine valve cover at cylinder 6  | ||
Fuel Injector 7 (L18)  | On the left rear top of the engine at cylinder 8 intake port  | ||
Fuel Injector 7 (LLY)  | On the right rear side of the engine valve cover at cylinder 7  | ||
Fuel Injector 8 (L18)  | On the right rear top of the engine at cylinder 8 intake port  | ||
Fuel Injector 8 (LLY)  | On the left rear side of the engine valve cover at cylinder 8  | ||
Fuel Pressure Regulator (LG5)  | At the front center of the engine, on the injection pump  | ||
Fuel Pump and Sender Assembly (L18)  | On the outboard side of the left frame rail, in the top of the fuel tank  | ||
Fuel Pump Relay - Secondary (Dual Tanks)  | On the inboard side of the right frame rail, near SP400  | Engine Controls Component Views or  | Engine Controls Connector End Views or  | 
Fuel Rail Pressure (FRP) Sensor (LG4)  | On the upper left side of the engine, on the bottom of the fuel rail  | ||
Fuel Rail Pressure (FRP) Sensor (LG5)  | On the upper left side of the engine, on the bottom of the fuel rail  | ||
Fuel Rail Pressure (FRP) Sensor (LLY)  | On top of the engine, the right fuel rail  | ||
Fuel Rail Temperature (FRT) Sensor (LLY)  | On top of the engine, forward of the glow plug control module (GPCM), to the left of the turbocharger on the fuel rail  | ||
Fuel Sender - Secondary (Dual Tanks/LG4/LG5/LLY)  | On the outboard side of the right frame rail, in the top of the fuel tank  | ||
Fuel Sender (Dual Tanks/L18)  | On the outboard side of the right frame rail, in the top of the fuel tank  | ||
Fuel Sender (LG4/LG5/LLY)  | On the outboard side of the left frame rail, in the top of the fuel tank  | ||
Fuel Tank Transfer Pump - Secondary (L18/LLY)  | On the inboard side of the left frame rail between the fuel tanks  | Engine Controls Component Views or  | Engine Controls Connector End Views or  | 
Fuel Temperature Sensor (LG4)  | On the lower left side of the engine, at the rear, on the fuel injection pump  | ||
Fuel/Water Separator - Primary (LG4/KUK)  | On the outboard left frame rail  | ||
Fuel/Water Separator - Primary (LG4/LG5/NWB)  | On the outboard left frame rail  | ||
Fuel/Water Separator - Secondary (LLY/NWB)  | On the right side of the engine  | ||
Fuse Block - Auxiliary (ANC/B3D)  | Top back right side of the engine compartment  | ||
Fuse Block - I/P - 1  | Right side of the I/P under the access cover, on the left  | ||
Fuse Block - I/P - 2  | Right side of the I/P under the access cover, on the right  | ||
Fuse Block - Underhood (Primary)  | Top back right side of the engine compartment  | ||
Fuse Block - Underhood (Secondary)  | Top back right side of the engine compartment  | ||
Fusible Link 1  | In the engine chassis harness, from the fuse block - underhood (secondary) B+ bus to the glow plug control module (GPCM) fusible link 3  | --  | |
Fusible Link 2  | In the engine chassis harness, from the fuse block - underhood (secondary) B+ bus to the Hydromax© relay  | --  | |
Fusible Link 3  | In the engine chassis harness, from the engine chassis harness to the glow plug control module (GPCM) connector C1  | --  | |
Generator (w/o K65)  | Mounted to the right front of the engine  | ||
Generator - Left (K65) (L18/LLY)  | Mounted to the left front of the engine  | ||
Generator - Right (K65) (L18/LLY)  | Mounted to the right front of the engine  | ||
Glow Plug 1 (LG4)  | On the upper left side of the engine, in the cylinder head, at cylinder 1  | --  | |
Glow Plug 1 (LG5)  | On the upper left side of the engine, in the cylinder head, at cylinder 1  | --  | |
Glow Plug 1 (LLY)  | On the upper right side of the engine, in the cylinder head, at cylinder 1  | --  | |
Glow Plug 2 (LG4)  | On the upper left side of the engine, in the cylinder head, at cylinder 2  | --  | |
Glow Plug 2 (LG5)  | On the upper left side of the engine, in the cylinder head, at cylinder 2  | --  | |
Glow Plug 2 (LLY)  | On the upper left side of the engine, in the cylinder head, at cylinder 2  | --  | |
Glow Plug 3 (LG4)  | On the upper left side of the engine, in the cylinder head, at cylinder 3  | --  | |
Glow Plug 3 (LG5)  | On the upper left side of the engine, in the cylinder head, at cylinder 3  | --  | |
Glow Plug 3 (LLY)  | On the upper right side of the engine, in the cylinder head, at cylinder 3  | --  | |
Glow Plug 4 (LG4)  | On the upper left side of the engine, in the cylinder head, at cylinder 4  | --  | |
Glow Plug 4 (LG5)  | On the upper left side of the engine, in the cylinder head, at cylinder 4  | --  | |
Glow Plug 4 (LLY)  | On the upper left side of the engine, in the cylinder head, at cylinder 4  | --  | |
Glow Plug 5 (LG4)  | On the upper left side of the engine, in the cylinder head, at cylinder 5  | --  | |
Glow Plug 5 (LG5)  | On the upper left side of the engine, in the cylinder head, at cylinder 5  | --  | |
Glow Plug 5 (LLY)  | On the upper right side of the engine, in the cylinder head, at cylinder 5  | --  | |
Glow Plug 6 (LG4)  | On the upper left side of the engine, in the cylinder head, at cylinder 6  | --  | |
Glow Plug 6 (LG5)  | On the upper left side of the engine, in the cylinder head, at cylinder 6  | --  | |
Glow Plug 6 (LLY)  | On the upper left side of the engine, in the cylinder head, at cylinder 6  | --  | |
Glow Plug 7 (LLY)  | On the upper right side of the engine, in the cylinder head, at cylinder 7  | --  | |
Glow Plug 8 (LLY)  | On the upper left side of the engine, in the cylinder head, at cylinder 8  | --  | |
Glow Plug Control Module (GPCM) (LLY)  | Right front of the engine, mounted above the drive belt tensioner  | ||
Glow Plug Relay (LG4)  | In the engine compartment on the right side of the fan shroud  | ||
Glow Plug Relay (LG5)  | On the upper left side of the engine  | ||
Hazard Switch  | Top of the upper steering column, part of the turn signal/multifunction switch  | ||
Headlamp - High Beam - Left (V22)  | On the front left of the vehicle  | ||
Headlamp - High Beam - Right (V22)  | On the front right of the vehicle  | ||
Headlamp - High/Low Beam - Left (GRW)  | Left front of the vehicle  | ||
Headlamp - High/Low Beam - Right (GRW)  | Right front of the vehicle  | ||
Headlamp - Low Beam - Left (V22)  | On the front left of the vehicle  | ||
Headlamp - High Beam - Right (V22)  | Front right of the vehicle  | ||
Headlamp Switch  | Left side of the I/P, below the HVAC air outlet  | ||
Heated Fuel/Water Separator - Secondary (LG5/KUN)  | On the left side of the engine  | ||
Heated Oxygen Sensor (HO2S) Bank 1 (L18)  | On the left exhaust pipe below the exhaust manifold  | ||
Heated Oxygen Sensor (HO2S) Bank 2 (L18)  | On the right exhaust pipe below the exhaust manifold  | ||
High Idle Switch (UF3)  | Center of the I/P, below the gage center, in the I/P switchbank  | ||
Horn (w/o U08)  | Behind the front bumper on the front right side of the cross member  | ||
Horn - A-Note (U08)  | Behind the front bumper on the front right side of the cross member  | ||
Horn - F-Note (U08)  | Behind the front bumper on the front right side of the cross member  | ||
Horn Switch  | Center of the upper steering column, on the front of the steering wheel  | ||
HVAC Control Assembly  | Center of the I/P, left of the I/P switchbank  | ||
HVAC Control Assembly - Auxiliary (C36)  | In the front center of the headliner  | ||
Hydromax® Fuse (JE3)  | In the engine compartment left side under the brake master cylinder taped to the harness  | ||
Hydromax® Relay (JE3)  | Left rear of the engine compartment behind the power steering fluid reservoir  | ||
Identification (ID) Lamp - Center  | On top of the roof, on the forward center of the cab  | ||
Identification (ID) Lamp - Left  | On top of the roof, on the forward left side of the cab, the inboard lamp  | ||
Identification (ID) Lamp - Right  | On top of the roof, on the forward right side of the cab, the inboard lamp  | ||
Ignition Coil 1 (L18)  | On the left side top of the engine, on the valve cover, at the front, at cylinder 1  | ||
Ignition Coil 2 (L18)  | On the right side top of the engine, on the valve cover, at the front, at cylinder 2  | ||
Ignition Coil 3 (L18)  | On the left side top of the engine, on the valve cover, at the center, at cylinder 3  | ||
Ignition Coil 4 (L18)  | On the right side top of the engine, on the valve cover, center, at cylinder 4  | ||
Ignition Coil 5 (L18)  | On the left side top of the engine, on the valve cover, at the center, at cylinder 5  | ||
Ignition Coil 6 (L18)  | On the right side top of the engine, on the valve cover, center, at cylinder 6  | ||
Ignition Coil 7 (L18)  | On the left side top of the engine, on the valve cover, at the rear, at cylinder 7  | ||
Ignition Coil 8 (L18)  | On the right side top of the engine, on the valve cover, at the rear, at cylinder 8  | ||
Ignition Key Warning Alarm Switch  | Right side of the upper steering column, behind the steering wheel, in the ignition key cylinder housing  | ||
Ignition Switch  | Right side of the upper steering column, behind the steering wheel  | ||
Inflatable Restraint Front End Discriminating Sensor (AJ3/AK5)  | Behind the front bumper, on the front center of the first crossmember  | ||
Inflatable Restraint I/P Module (AK5)  | Front right side of the I/P  | ||
Inflatable Restraint I/P Module Disable Switch (AK5 w/o AQR)  | Center of the I/P, below the gage center, in the I/P switchbank  | ||
Inflatable Restraint Resistor Module (AJ3)  | Behind the left kick panel  | ||
Inflatable Restraint Sensing and Diagnostic Module (SDM) (AJ3/AK5)  | Under the driver seat  | ||
Inflatable Restraint SIR Coil (AJ3/AK5)  | Center of the upper steering column, behind the steering wheel  | ||
Inflatable Restraint Steering Wheel Module (AJ3/AK5)  | Center of the upper steering column, on the front of the steering wheel  | ||
Instrument Panel Cluster (IPC)  | In the left side of the I/P  | ||
Intake Air (IA) Heater (LG5)  | On the intake manifold  | ||
Intake Air (IA) Heater Relay (LG5)  | On the top right side of the cylinder head  | ||
Intake Air (IA) Heater Relay Diode (LG5)  | In the intake air (IA) heater harness, approximately 15 cm (5.9 in) from the engine chassis harness connector  | --  | |
Intake Air Heater (IAH) Module (LLY)  | At the rear center of the engine compartment, on the bulkhead  | ||
Intake Air Temperature (IAT) Sensor (LG5)  | On the top right side of the cylinder head  | ||
Intake Air Temperature (IAT) Sensor 2 (LLY)  | At the front center of the engine, on the intake manifold  | ||
Inter-Axle Differential Lock Switch (Tandem Axle)  | On the left side of the interior bulkhead, behind the I/P, on the air brake supply manifold  | ||
Inter-Axle Differential Lock Switch Lamp (Tandem Axle)  | Behind the center of the I/P, below the gage center, in the I/P switchbank, part of the pneumatic switch  | ||
Internal Mode Switch (IMS) (Allison®LCT)  | Internal to the automatic transmission  | ||
Junction Block - Isolator (VNF)  | In the engine compartment, at the top of the right side  | --  | --  | 
Junction Block - Underhood  | In the engine compartment, at the top of the right side  | --  | --  | 
Junction Block - Upfitter  | In the engine compartment, at the top of the right side  | --  | --  | 
Knock Sensor (KS) Bank 1 (L18)  | In the engine block at the left side below the exhaust manifold  | ||
Knock Sensor (KS) Bank 2 (L18)  | In the engine block at the right side below the exhaust manifold  | ||
Low Air Pressure Switch - Primary (JE4)  | Inboard of the left frame rail, on the front end of the front axle (primary) service (air supply) reservoir  | ||
Low Air Pressure Switch - Secondary (JE4)  | In back of the passenger foot step, on the end of the rear axle (secondary) service (air supply) reservoir  | ||
Low Air Pressure Switch (JE3/K16)  | Inboard of the left frame rail, on the front end of the air supply reservoir  | ||
Manifold Absolute Pressure (MAP) Sensor (L18)  | In the front center of the intake manifold behind the water outlet  | ||
Manifold Absolute Pressure (MAP) Sensor (LG4)  | On the upper left side of the engine, on the top rear of the intake manifold air inlet elbow  | ||
Manifold Absolute Pressure (MAP) Sensor (LG5)  | On the left side of the engine  | ||
Manifold Absolute Pressure (MAP) Sensor (LLY)  | Left front of the engine on the intake manifold right below the A/C compressor  | ||
Marker Lamp Switch  | Center of the I/P, below the gage center, in the I/P switchbank  | ||
Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor (L18/LG4/LLY)  | In the engine compartment on the right side of the air cleaner  | ||
Oil Level Sensor (Allison® MD)  | Internal to the automatic transmission  | --  | --  | 
Outside Heated Mirror Switch (DB6/DB8)  | Center of the I/P, below the gage center, in the I/P switchbank  | ||
Outside Rearview Mirror - Driver (DB6/DB7/DB8)  | Forward of the left door on the body  | 
 or  | |
Outside Rearview Mirror - Passenger (DB6/DB7/DB8)  | Forward of the right door on the body  | 
 or  | |
Outside Rearview Mirror Switch (DB6)  | On the driver door  | ||
Overdrive Defeat Switch (Allison® LCT)  | Center of the I/P, below the HVAC air outlet, left of the radio and the HVAC control assembly  | ||
Park Brake Switch (JE3) (C4/C5)  | On the left kick panel to the right rear of the park brake lever  | ||
Park Brake Switch (JE3) (C6/C7/C8)  | On the park brake lever under the center console  | ||
Park Brake Switch (JE4)  | On the left side of the exterior bulkhead, on the air brake application valve  | ||
Park/Neutral Position (PNP) Switch (Allison® LCT)  | Mounted on the left side of the transmission  | ||
Park/Neutral Position (PNP) Switch (Allison® MD)  | Internal to the automatic transmission  | --  | --  | 
Park/Turn Signal Lamp - LF  | On the left front of the vehicle  | ||
Park/Turn Signal Lamp - RF  | On the right front of the vehicle  | ||
Power Brake (P/B) Booster Fluid Flow Switch (JE3)  | In the engine compartment on the upper left side of the bulkhead, on top of the power brake (P/B) booster pump, behind the brake master cylinder  | ||
Power Brake (P/B) Booster Pump Motor (JE3)  | In the engine compartment on the upper left side of the bulkhead, behind the power steering fluid reservoir  | ||
Power Take-Off (PTO) Switch  | Center of the I/P, below the gage center, in the I/P switchbank  | ||
Powertrain Control Module (PCM) (L18)  | In the engine compartment on the left side of the bulkhead  | ||
Pressure Control Solenoid (PCS) MAINMOD Valve (Allison® LCT)  | Internal to the automatic transmission  | --  | |
Pressure Control Solenoid (PCS) Valve 1 (Allison® LCT)  | Internal to the automatic transmission  | --  | |
Pressure Control Solenoid (PCS) Valve 2 (Allison® LCT)  | Internal to the automatic transmission  | --  | |
Pressure Switch 1 (Allison® LCT)  | Internal to the automatic transmission, on the pressure switch manifold (PSM)  | --  | --  | 
Pressure Switch 2 (Allison® LCT)  | Internal to the automatic transmission, on the pressure switch manifold (PSM)  | --  | --  | 
Pressure Switch 3 (Allison® LCT)  | Internal to the automatic transmission, on the pressure switch manifold (PSM)  | --  | --  | 
Pressure Switch 4 (Reverse) (Allison® LCT)  | Internal to the automatic transmission, on the pressure switch manifold (PSM)  | --  | --  | 
Pressure Switch Manifold (PSM) (Allison® LCT)  | Internal to the automatic transmission  | --  | |
Pressure Switch R (Allison® LCT)  | Internal to the automatic transmission, on the pressure switch manifold (PSM)  | --  | --  | 
Radio (w/o UL5)  | Center of the I/P, left of the gage center and I/P switchbank  | ||
Rear Axle Driver Control Switch - Two Speed (HPZ/Automatic Transmission)  | Center of the I/P, below the gage center, in the I/P switchbank  | ||
Rear Axle Driver Control Switch - Two Speed (HPZ/Manual Transmission)  | Mounted on the manual transmission shift lever  | ||
Rear Axle Driver Control Switch Lamp - Two Speed (HR1/Automatic Transmission)  | Behind the center of the I/P, below the gage center, in the I/P switchbank, part of the pneumatic switch  | ||
Rear Axle Shift Motor - Two Speed (HPZ)  | On the front of the rear axle, on the differential  | ||
Rear Axle Shift Relay - Two Speed (HPZ)  | On the front side of the crossmember forward of the rear axle  | ||
Rear Axle Shift Switch - Two Speed (HR1/HR2)  | On the frame rail forward of the rear axle  | ||
Rear Window Defogger Grid (C49)  | On the rear window  | ||
Rear Window Defogger Switch (C49)  | Center of the I/P, left of the I/P switchbank, part of the HVAC control assembly  | ||
Remote Control Door Lock Receiver (RCDLR) (AU0)  | Under the left side of the I/P above the accelerator pedal  | ||
Serial Data Gateway (SDG) Module (L18 w/JE4, LG4, LG5)  | Above the accelerator pedal on top of the I/P support bracket  | ||
Shift Solenoid 1 (Allison® LCT)  | Internal to the automatic transmission  | --  | |
Shift Solenoid 2 (Allison® LCT)  | Internal to the automatic transmission  | --  | |
Shift Solenoid 3 (Allison® LCT)  | Internal to the automatic transmission  | --  | |
Speaker - LF (w/o UL5)  | In the left front door  | ||
Speaker - LF Tweeter (ZQ2)  | In the left front door  | ||
Speaker - LR  | In the left rear door  | ||
Speaker - RF (w/o UL5)  | In the right front door  | ||
Speaker - RF Tweeter (ZQ2)  | In the right front door  | ||
Speaker - RR  | In the right rear door  | ||
Starter  | On the lower right side of the engine  | --  | |
Starter Solenoid  | On the lower right side of the engine, part of the starter  | --  | |
Starter Temperature Switch (KQR)  | On the lower right side of the engine, part of the starter  | ||
Stop Lamp Switch (JE3)  | Behind the left side of the I/P, right of the lower steering column, at the top of the brake pedal support bracket  | ||
Stop Lamp Switch (JE4)  | On the left side of the exterior bulkhead, under the brake pedal, on the air brake application valve  | ||
Suction Control Valve (SCV) (LG4)  | On the lower left side of the engine, at the rear, on the fuel injection pump  | ||
Suction Control Valve (SCV) (LG5)  | On the lower left side of the engine, at the rear  | ||
Tail Lamp Assembly - Left  | At the rear of the left frame rail  | ||
Tail Lamp Assembly - Right  | At the rear of the right frame rail  | ||
Tail/Stop and Turn Signal Lamp - Left  | At the rear of the left frame rail, part of the tail lamp assembly - left  | ||
Tail/Stop and Turn Signal Lamp - Right  | At the rear of the right frame rail, part of the tail lamp assembly - right  | ||
Throttle Actuator Control (TAC) Module (L18)  | Top center front of the engine  | ||
Throttle Body (L18)  | Top center front of the engine  | ||
Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid Valve (Allison® LCT)  | Internal to the automatic transmission  | --  | |
Traction Control Switch (NW9)  | Center of the I/P, below the gage center, in the I/P switchbank  | Antilock Brake System Component Views or  | Antilock Brake System Connector End Views or  | 
Traction Control Valve (JE4 and NW9)  | On the right side of the crossmember forward of the rear axle  | ||
Tractor/Trailer Connector (RQ2 and U86 or RQ3)  | On the left side of the rear crossmember  | ||
Tractor/Trailer Plug (VPG)  | On the left side of the rear crossmember  | ||
Tractor Receptacle (JE4/RQ3)  | On the left side of the rear crossmember  | ||
Trailer Connector (RQ2 and U86 or RQ3)  | On the left side of the rear crossmember  | ||
Trailer Stop Lamp Switch (JE4 and RQ2 and U86 or JE4 and RQ3)  | Below the left side of the I/P on the brake pedal  | ||
Transfer Case Encoder Motor (NP1)  | On the forward right side of the transfer case  | ||
Transfer Case Shift Control Module (NP1)  | Behind the left side of the I/P behind the headlamp switch  | ||
Transfer Case Shift Control Switch (NP1)  | Center of the I/P, above the I/P switchbank, in the gage center  | ||
Transmission Control Module (TCM) (Allison® LCT or MD)  | Right rear of the engine compartment  | ||
Transmission Fluid Temperature (TFT) Sensor (Allison® LCT)  | Internal to the automatic transmission, on the pressure switch manifold (PSM)  | --  | --  | 
Transmission Fluid Temperature (TFT) Sensor (Allison® MD)  | Internal to the automatic transmission  | --  | --  | 
Turbine Shaft Speed (TSS) Sensor (Allison® LCT)  | On the upper left side of the transmission, behind the transmission bell housing  | ||
Turbine Shaft Speed (TSS) Sensor (Allison® MD)  | Internal to the automatic transmission  | --  | --  | 
Turbocharger Boost Pressure Sensor (LG4)  | On the upper left side of the engine, on the top rear of the intake manifold air inlet elbow  | ||
Turbocharger Vane Position (TVP) Control Solenoid Valve (LG4)  | At the right side of the engine, on the turbocharger behind the intake impeller housing  | ||
Turbocharger Vane Position (TVP) Control Solenoid Valve (LLY)  | At the right side of the engine, on the turbocharger behind the intake impeller housing  | ||
Turbocharger Vane Position (TVP) Sensor (LG4)  | At the right side of the engine, on the top center of the turbocharger  | ||
Turbocharger Vane Position (TVP) Sensor (LLY)  | At the right side of the engine, on the top center of the turbocharger  | ||
Turn Signal/Hazard Flasher Module  | Left lower side of the I/P to the right of the lower steering column  | ||
Turn Signal/Multifunction Switch  | Center of the upper steering column, behind the steering wheel  | ||
Vacuum Pump (Diesel)  | In the engine compartment at the front right of the radiator support by the radiator outlet  | ||
Vehicle Speed Sensor (VSS) (Automatic Transmission)  | On the automatic transmission on the top left rear  | ||
Vehicle Speed Sensor (VSS) (Manual Transmission)  | On the transmission on the top left rear  | Manual Transmission Component Views or  | |
Water-In-Fuel Sensor (LG4/LG5/KUK/NWB)  | On the outboard left frame rail, part of the fuel/water separator - primary  | ||
Water-In-Fuel Sensor (LG5/KUN)  | On the left side of the engine, part of the heated fuel/water separator - secondary  | ||
Water-In-Fuel Sensor (LLY/NWB)  | On the right side of the engine, on the bottom of the fuel/water separator - secondary  | ||
Wheel Speed Sensor (WSS) - LF (JE3)  | Mounted in the left front wheel steering knuckle  | ||
Wheel Speed Sensor (WSS) - LF (JE4)  | Mounted in the left front wheel steering knuckle  | ||
Wheel Speed Sensor (WSS) - LR (JE3)  | On the left rear wheel  | ||
Wheel Speed Sensor (WSS) - LR (JE4)  | Mounted in the left rear brake backing plate  | ||
Wheel Speed Sensor (WSS) - LR Middle (Tandem Axle/JE4)  | Mounted in the left middle backing plate  | ||
Wheel Speed Sensor (WSS) - RF (JE3)  | Mounted in the right front wheel steering knuckle  | ||
Wheel Speed Sensor (WSS) - RF (JE4)  | Mounted in the right front wheel steering knuckle  | ||
Wheel Speed Sensor (WSS) - RR (JE3)  | Mounted in the right rear brake backing plate  | ||
Wheel Speed Sensor (WSS) - RR (JE4)  | Mounted in the right rear brake backing plate  | ||
Wheel Speed Sensor (WSS) - RR Middle (Tandem Axle/JE4)  | Mounted in the right middle backing plate  | ||
Window Motor - Driver (A31)  | In the driver door  | ||
Window Motor - LR (A31/Crew Cab)  | In the left rear door  | ||
Window Motor - Passenger (A31)  | In the passenger door  | ||
Window Motor - RR (A31/Crew Cab)  | In the right rear door  | ||
Window Switch - Driver (A31)  | On the driver door trim panel armrest  | ||
Window Switch - LR (A31/Crew Cab)  | On the left rear door trim panel  | ||
Window Switch - Passenger (A31)  | On the passenger door trim panel  | ||
Window Switch - RR (A31/Crew Cab)  | On the right rear door trim panel  | ||
Windshield Washer Fluid Level Switch  | In the left rear engine compartment mounted on the windshield washer fluid reservoir  | ||
Windshield Washer Fluid Pump  | In the left rear engine compartment mounted on the windshield washer fluid reservoir  | ||
Windshield Washer Switch  | Left side of the upper steering column, a paddle on the multifunction lever, part of the turn signal/multifunction switch  | ||
Windshield Wiper Motor  | In the engine compartment behind the cowl  | ||
Windshield Wiper Switch  | Left side of the upper steering column, a ring on the multifunction lever, part of the turn signal/multifunction switch  | ||
C100 (30 cavities)  | Chassis harness to the engine chassis harness, near the right front frame rail, behind the shock absorber  | ||
C101 (30 cavities)  | I/P harness to the engine chassis harness, right rear of the engine compartment below the engine control module (ECM)/powertrain control module (PCM)/transmission control module (TCM)  | ||
C102 (10 cavities - Upfitter Transmission Connector)  | Engine chassis harness to the upfitter harness, taped to the engine harness directly below the engine control module (ECM)  | ||
C103 (8 cavities - LF8/LMM)  | Engine chassis harness to the exhaust harness, left side of the vehicle, near the end of the transmission  | ||
C104 (6 cavities - LG4/LG5)  | Engine chassis harness to the exhaust brake harness, forward of the right front shock absorber  | ||
C105 (4 cavities - LG4/LG5/LF8/LF6)  | Engine chassis harness to the A/C harness, in the middle right of the engine compartment near the A/C accumulator/dehydrator  | ||
C105 (8 cavities - L18/LMM/LLY)  | Engine chassis harness to the A/C harness, in the middle right of the engine compartment near the A/C accumulator/dehydrator  | ||
C106 (6 cavities - C4/C5)  | Radiator harness to the chassis harness, near right side of the radiator  | ||
C106 (12 cavities - C6/C7/C8)  | Chassis harness to the radiator harness, near right side of the radiator  | ||
C107 (5 cavities)  | Chassis harness to forward lamp harness - left, in the left front of the engine compartment on the hood at the left hood hinge  | ||
C108 (5 cavities)  | Chassis harness to the forward lamp harness - right, in the right front of the engine compartment on the hood at the right hood hinge  | ||
C109 (40 cavities - LG4/LG5/LF6/LF8)  | Engine chassis harness to the I/P harness, back right of the engine under the engine control module (ECM)/powertrain control module (PCM)/transmission control module (TCM)  | ||
C110 (7 cavities - L18)  | Engine chassis harness to the ignition coil harness - bank 1, top left of the engine on top of the intake manifold  | ||
C111 (7 cavities - L18)  | Engine chassis harness to the ignition coil harness - bank 2, top right of the engine on the rocker cover  | ||
C111 (3 cavities - LG4)  | Engine harness to the engine chassis harness, lower left of the engine  | ||
C111 (3 cavities - LG5)  | Engine harness to the engine chassis harness, lower left of the engine  | ||
C112 (10 cavities - L18)  | Engine chassis harness to the fuel injector harness, top left of engine above C110  | ||
C113 (6 cavities - LLY/LMM)  | Engine jumper harness to the engine harness, left upper side of engine, under the upper coolant outlet  | ||
C114 (2 cavities - VNF)  | Engine chassis harness to the battery isolator harness, on the right side of the vehicle near the passenger door step  | ||
C115 (1 cavity - LG5)  | Engine chassis harness to the engine chassis harness, in the engine compartment near the starter  | ||
C116 (1 cavity - LG5/LF6/KQR)  | Starter harness to the engine chassis harness, in the engine compartment near the starter  | ||
C117 (1 cavity - LG5/LF6/KQR)  | Starter harness to the engine chassis harness, in the engine compartment near the starter  | ||
C118 (40 cavities - LLY/LMM)  | Engine harness to the engine chassis harness, on the top left center of the engine  | ||
C119 (24 cavities - LLY/LMM)  | Engine harness to the engine chassis harness, on the top left center of the engine  | ||
C120 (3 cavities - LG5, 2 cavities - LF6)  | Intake air (IA) heater harness to the engine chassis harness  | ||
C121 (10 cavities - Upfitter PTO Connector)  | Chassis harness to the upfitter harness, taped to the engine harness to the right of the engine control module (ECM) directly behind the remote battery stud  | ||
C122 (8 cavities - LG4)  | Engine harness to the fuel injector harness connector adapter 1 to injector harness 1, on the upper left side of the cylinder head between injector 2 and 3  | ||
C123 (8 cavities - LG4)  | Engine harness to the fuel injector harness connector adapter 2 to injector harness 2, on the upper left side of the cylinder head between injector 4 and 5  | ||
C124 (24 cavities - L18/LLY/LMM)  | I/P harness to the engine chassis harness, right rear of the engine compartment below the control modules  | ||
C125 (1 cavity - LF8)  | Engine chassis harness to the engine harness  | ||
C126 (40 cavities)  | Chassis harness to the I/P harness, back, right to the engine  | ||
C127 (10 cavities - LF8)  | Engine chassis harness to the power take-off harness, taped to the engine harness to the right of the engine control module (ECM) directly behind the remote battery stud  | ||
C128 (2 cavities)  | I/P harness to the rear chassis harness, at the right front frame rail behind the shock absorber  | ||
C129 (6 cavities - LF8)  | Engine chassis harness to the engine harness  | ||
C133 (3 cavities - LLY)  | Fuel pressure regulator harness to the engine harness  | ||
C134 (4 cavities - LLY)  | Fuel rail pressure (FRP) sensor harness to the engine harness  | ||
C135 (3 cavities - LG5/LF6)  | Engine harness to the intake air (IA) heater harness  | ||
C136 (6 cavities - LF6)  | Engine chassis harness to the engine harness, near the ECM  | ||
C137 (8 cavities - LF6)  | Engine chassis harness to the DPF extension harness  | ||
C138 (8 cavities - LF6)  | Engine harness to the DPF extension harness  | ||
C139 (4 cavities - LF6)  | Engine harness to the DPF harness  | ||
C140 (12 cavities - LF6)  | Engine harness to the SRH harness  | ||
C141 (4 cavities - LF6)  | Engine harness to the ARD harness  | ||
C142 (3 cavities - LF6)  | Engine harness to the ARD turbo sensor harness  | ||
C143 (2 cavities - LF6)  | Engine harness to the ARD fuel enable sensor harness  | ||
C144 (2 cavities - LF6)  | Engine harness to the ARD fuel control valve 1 harness  | ||
C145 (2 cavities - LF6)  | Engine harness to the ARD fuel control valve 2 harness  | ||
C146 (3 cavities - LF6)  | Engine harness to the ARD ignition coil harness  | ||
C147 (12 cavities - LF6)  | Fuel injector harness to the engine harness  | ||
C150 (4 cavities)  | Windshield washer harness to the I/P harness, in the engine compartment, behind the windshield washer reservoir  | ||
C175 (20 cavities - Allison® LCT) (31 cavities - Allison® MD)  | Engine chassis harness to the internal transmission harness, on the right side of the transmission, near the rear  | ||
C201 (48 cavities)  | Steering column harness to the I/P harness, underneath the lower steering column  | ||
C202 (30 cavities)  | I/P switchbank harness to the I/P harness, center of the I/P behind the I/P switchbank  | ||
C203 (16 cavities)  | I/P harness to the body/roof harness, behind the left kick panel  | ||
C204 (10 cavities - Crew Cab)  | Rear body harness to the body/roof harness, behind the left kick panel  | ||
C205 (1 cavity - Crew Cab)  | I/P harness to the body/roof harness, behind the left kick panel  | ||
C206 (4 cavities)  | I/P harness to the body/roof harness, behind the left kick panel  | ||
C207 (30 cavities)  | I/P harness to the cross body harness, behind the right kick panel  | ||
C208 (6 cavities)  | Cross body harness to the stop lamp switch harness, behind the left side of the I/P above the brake pedal  | ||
C209 (3 cavities - Crew Cab)  | Body/roof harness to the I/P harness, behind the left kick panel  | ||
C210 (2 cavities)  | I/P harness to the park brake harness, behind the left kick panel  | ||
C211 (22 cavities)  | Door harness - driver to the cross body harness, behind the left kick panel  | ||
C212 (22 cavities)  | Door harness - passenger to the cross body harness, behind the right kick panel  | ||
C215 (8 cavities)  | Door harness - driver to the mirror harness, behind the left kick panel  | ||
C216 (8 cavities)  | Door harness - passenger to the mirror harness, behind the right kick panel  | ||
C217 (4 cavities)  | Door harness - driver to the cross body harness, behind the left kick panel  | ||
C218 (6 cavities)  | Air temperature actuator jumper harness to the I/P harness, behind the right side of the I/P  | ||
C275 (2 cavities)  | Steering column harness to the I/P harness, center of the upper steering column, on the front of the steering wheel  | ||
C300 (6 cavities - M/T)  | Transmission harness to the engine chassis harness, right lower side of the engine near transmission bell housing  | ||
C301 (12 cavities - Crew Cab)  | Body/roof harness to the rear door harness - left, in the lower left B-pillar  | ||
C302 (12 cavities - Crew Cab)  | Body/roof harness to the rear door harness - right, in the lower right B-pillar  | ||
C304 (8 cavities - RQ2 and U86 or RQ3)  | I/P harness to the front trailer harness, behind the right side of the cab  | ||
C305 (12 cavities - Upfitter Lighting Connector)  | Chassis harness to the upfitter harness, taped to the chassis harness at the inboard right frame rail forward of splice pack SP400 (ground block)  | ||
C315 (2 cavities)  | Console harness to the body/roof harness, behind the driver seat  | ||
C400 (8 cavities - JE3)  | Antilock brake system (ABS) harness to the rear chassis harness  | ||
C401 (8 cavities - JE4)  | Antilock brake system (ABS) harness to the rear chassis harness  | ||
C403 (7 cavities )  | Rear trailer harness to the front trailer harness  | ||
C406 (4 cavities - HPZ, HR1 or HR2)  | Rear axle harness to the ABS harness, forward of the rear axle, on the inboard right rear frame rail  | ||
C409 (8 cavities)  | Fuel tank harness to the rear chassis harness, behind the third cross member from the rear of the vehicle  | ||
C410 (3 cavities - K16)  | Chassis harness to the air compressor harness, rear of the air compressor under the left front door step  | ||
C411 (8 cavities UZF)  | Backup alarm harness to the rear chassis harness  | ||
C412 (8 cavities w/o UZF)  | Tail lamp harness to the rear chassis harness  | ||
C413 (8 cavities UZF)  | Tail lamp harness to the backup alarm harness  | ||
G100  | On the RH frame rail, forward of the RH front shock tower  | --  | |
G101  | Mounted under the left side of the I/P, behind the left kick panel, near the parking brake and C206  | --  | |
G102  | In the engine compartment, in the lower right corner in front of the cowl  | --  | |
G103  | Behind the right side kick panel  | --  | |
G105  | Behind the left kick panel  | --  | |
G106  | On the crossmember underneath the cab  | --  | |
G112  | On the left frame rail below the cab  | --  | |
G113  | On the back of the left cylinder head  | --  | |
G118  | Right front of the engine block above G120  | --  | |
G119  | Right front of the engine block above G118  | --  | |
G120  | Right front of the engine block below G118  | --  | |
G200  | On the right frame rail near the front right side of the engine  | --  | |
G202  | On the right frame rail near the middle right side of the engine  | --  | |
G203  | On the right frame rail underneath the cab  | --  | |
G204  | Under the driver door step on the frame  | --  | |
G205  | On the right side of the frame below the engine control module (ECM)/powertrain control module (PCM)  | --  | |
G400 (LLY)  | Left rear frame rail before the right rear tire  | --  | |
G400 (LG4/LG5/LF8)  | Under the left front door foot step  | --  | |
G400 (L18)  | Left rear of the vehicle behind left rear tires  | --  | |
G408  | (CKT 350) On the inboard RH frame rail  | --  | |
G410  | (CKT 350) At the outboard side of the right frame rail on top of the fuel tank  | --  | |
G411  | (CKT 350) At the outboard side of the left frame rail on top of the fuel tank  | --  | |
G412 (Family 2)  | (CKT 350) On top of the fuel tank  | --  | |
S100 (L18)  | (CKT 1020) In the engine harness, approximately 6.5 cm (2.5 in) from the transmission control module (TCM) breakout, toward the inline to I/P connectors  | --  | |
S100 (LF8)  | (CKT 1020) In the engine harness, approximately 7.5 cm (3 in) from the transmission control module (TCM) breakout, toward the underhood fuse block  | --  | |
S100 (LMM)  | (CKT 1020) In the engine harness, approximately 15 cm (6 in) from the breakout to underhood fuse block, toward inline to POA engine harness connectors  | --  | |
S101 (L18)  | (CKT 440) In the engine harness, approximately 31.5 cm (12.5 in) from the breakout to powertrain control module (PCM), toward the underhood fuse block  | --  | |
S101 (LF8)  | (CKT 440) In the engine harness, approximately 13 cm (5 in) from the breakout to C100 inline to chassis harness, toward the X101 inline to I/P  | --  | |
S101 (LMM)  | (CKT 440) In the engine harness, approximately 25 cm (10 in) from the breakout to underhood fuse block, toward the engine control module (ECM)  | --  | |
S102 (L18)  | (CKT 439) In the engine harness, approximately 40 cm (16 in) from the breakout to powertrain control module (PCM), toward the underhood fuse block  | --  | |
S102 (LF8)  | (CKT 439) In the engine harness, approximately 19.5 cm (8 in) from the breakout to engine control module (ECM), toward the underhood fuse block  | --  | |
S102 (LMM)  | (CKT 439) In the engine harness, approximately 30 cm (12 in) from the breakout to underhood fuse block toward engine control module (ECM)  | --  | |
S103 (L18)  | (CKT 239) In the engine harness, approximately 10 cm (4 in) from the breakout for generator, toward X112 inline to the fuel injectors  | --  | |
S103 (LMM)  | (CKT 239) In the engine harness, approximately 10 cm (4 in) from the breakout to underhood fuse block toward engine control module (ECM)  | --  | |
S104 (LF8)  | (CKT 1642) In the engine harness, approximately 9.5 cm (4 in) from the breakout to the X100 inline to chassis harness, toward the underhood fuse block  | --  | |
S105 (LMM)  | (CKT 1042) In the engine harness, approximately 6 cm (2.2 in) from the breakout for the generator, toward the starter  | --  | |
S106 (LF8)  | (CKT DF29) In the engine harness  | --  | |
S107 (LMM)  | (CKT 339) In the engine harness, approximately 3 cm (1.5 in) from the breakout for the inline to chassis harness X100, toward the transmission controls module (TCM)  | --  | |
S108 (LG5)  | (CKT 1540) In the engine chassis harness, approximately 14.5 cm (6 in) from the breakout for the engine controls module (ECM), toward the underhood fuse block  | --  | |
S109 (LMM)  | (CKT HB03) In the engine harness  | --  | |
S110 (LLY/LMM)  | (CKT 5425) In the engine harness  | ||
S111 (LLY/LMM)  | (CKT 5421) In the engine harness  | --  | |
S112 (LLY/LMM)  | (CKT 5423) In the engine harness  | --  | |
S113 (LLY/LMM)  | (CKT 5422 In the engine harness  | --  | |
S114 (L18)  | (CKT 250) In the engine harness, approximately 6.5 cm (2.5 in) from the breakout for the underhood fuse block toward the fuse block  | --  | |
S114 (LF8)  | (CKT 250) In the engine harness, approximately 21.5 cm (9 in) from the breakout to inline to chassis harness X100, toward that inline  | --  | |
S114 (LMM)  | (CKT 250) In the engine harness, approximately 15 cm (6 in) from the breakout to underhood fuse block, toward engine control module (ECM)  | --  | |
S115 (L18)  | (CKT 250) In the engine harness, approximately 10 cm (4 in) from the breakout for the manifold absolute pressure (MAP) sensor, toward the transmission  | --  | |
S116 (L18)  | (CKT 251) In the engine harness, approximately 3.5 cm (1.5 in) from the breakout for the manifold absolute pressure (MAP) sensor, toward the transmission  | --  | |
S116 (LG5)  | (CKT 251) In the engine harness, approximately 28 cm (11 in) from the engine controls module (ECM) breakout, toward transmission  | --  | |
S117  | (CKT 350) In the forward lamp harness - left, approximately 45 cm (18 in) from the chassis harness connector  | --  | |
S118 (L18)  | (CKT 351) In the engine harness, approximately 27.5 cm (11 in) from the breakout to powertrain control module (PCM), toward the underhood fuse block  | --  | |
S118 (LF8)  | (CKT 351) In the engine harness, approximately 18 cm (7 in) from the breakout for the transmission controls module (TCM), toward the engine controls module (ECM)  | --  | |
S118 (LLY/LMM)  | (CKT 351) In the engine harness, approximately 2.5 cm (1 in) from transmission optional connector toward the fuse block - underhood  | --  | |
S120  | (CKT 488) In the engine harness, approximately 7 cm (3 in) from the breakout for C121 toward the fuse block - underhood  | --  | |
S121 (w/o L18)  | (CKT 2522) In the engine harness, approximately 8 cm (3 in) from the inline to I/P X101 breakout, toward the engine control module (ECM)  | --  | |
S122 (LLY/LMM)  | (CKT IC91) In the engine harness  | --  | |
S132 (L18)  | (CKT 139) In the engine harness, approximately 19.5 cm (8 in) from the breakout to inline to I/P connector C101, toward that connector  | --  | |
S132 (LF8)  | (CKT 139) In the engine harness, approximately 13 cm (5 in) from the breakout to inline to I/P connector C101, toward that connector  | --  | |
S132 (LLY/LMM)  | (CKT 139) In the engine harness, approximately 9 cm (4.5 in) from the breakout to underhood fuse block, toward underhood fuse block  | --  | |
S133 (L18)  | (CKT 25) In the engine harness, approximately 6.5 cm (2.5 in) from the breakout to A/C harness, toward generator  | --  | |
S142 (L18/LF8)  | (CKT 1467) In the engine harness, approximately 15 cm (6 in) from the breakout to inline C100 to chassis harness, toward that inline  | --  | |
S143 (V22)  | (CKT 350) In the forward lamp harness - right, approximately 45 cm (18 in) from the chassis harness connector  | --  | |
S144 (V22)  | (CKT 11) In the forward lamp harness - right, approximately 45 cm (18 in) from the chassis harness connector  | --  | |
S145 (V22)  | (CKT 11) In the forward lamp harness - left, approximately 45 cm (18 in) from the chassis harness connector  | --  | |
S146 (LF8)  | (CKT 470) In the engine harness, approximately 4 cm (1.5 in) from the breakout to starter, toward underhood fuse block  | --  | |
S147 (L18/LG4/LG5/LF8/C60)  | (CKT 59) In the A/C harness, approximately 9 cm (3.5 in) from the A/C compressor clutch breakout, toward the A/C compressor clutch breakout  | --  | |
S147 (LLY/LMM/C60)  | (CKT 59) In the A/C harness, approximately 30.5 cm (12 in) from the inline to engine harness C105 breakout, toward the A/C compressor clutch breakout  | --  | |
S148 (L18/LG4/LG5/LF8/C60)  | (CKT 250) In the A/C harness, approximately 9 cm (3.5 in) from the A/C compressor clutch breakout, toward the A/C compressor clutch breakout  | --  | |
S148 (LLY/LMM/C60)  | (CKT 250) In the A/C harness, approximately 30.5 cm (12 in) from the inline to engine harness C105 breakout, toward the A/C compressor clutch breakout  | --  | |
S150 (LF8)  | (CKT CF40) In the engine harness  | --  | |
S151 (L18)  | (CKT 2361) In the engine harness, approximately 20 cm (8 in) from the breakout for the inline to chassis harness C100, toward that inline  | --  | |
S151 (LF8)  | (CKT 2361) In the engine harness, approximately 16 cm (6.5 in) from the breakout to inline to I/P C109, toward the engine controls module (ECM)  | --  | |
S152 (L18)  | (CKT 2361) In the engine harness, approximately 20 cm (8 in) from the breakout for the inline to chassis harness C100, toward that inline  | --  | |
S152 (LF8)  | (CKT 2362) In the engine harness, approximately 11 cm (4.5 in) from the breakout to inline to I/P C109, toward the engine controls module (ECM)  | --  | |
S154 (LF8)  | (CKT 2361) In the engine harness, approximately 9.5 cm (4 in) from the breakout to the C100 inline to chassis harness, toward the underhood fuse block  | --  | |
S155 (LF8)  | (CKT 2362) In the engine harness, approximately 13 cm (5 in) from the breakout to C100 inline to chassis harness, toward the C101 inline to I/P  | --  | |
S156 (L18)  | (CKT 6105) In the engine harness, approximately 16 cm (7 in) from the breakout for the transmission controls module (TCM), toward the transmission controls module (TCM)  | --  | |
S157 (LF8)  | (CKT HB21A) In the engine harness  | --  | |
S158 (LF8)  | (CKT IC01) In the engine harness  | --  | |
S159 (LF8)  | (CKT 440) In the engine harness, approximately 9 cm (3.5 in) from the breakout to C100 inline to chassis harness, toward the C101 inline to I/P  | --  | |
S160 (LLY/LMM)  | (CKT 508) In the engine harness, approximately 10 cm (4 in) from the breakout to underhood fuse block, toward the transmission  | --  | |
S161 (LF8)  | (CKT 1121) In the engine harness, approximately 17 cm (7 in) from the breakout to inline to chassis harness C100, toward the underhood fuse block  | --  | |
S162 (LF8)  | (CKT 1120) In the engine harness, approximately 19 cm (9.5 in) from the breakout to inline to chassis harness C100, toward the underhood fuse block  | --  | |
S163 (LF8)  | (CKT 24) In the engine harness, approximately 53 cm (21 in) from the breakout for the starter, toward underhood fuse block  | --  | |
S163 (LLY/LMM)  | (CKT 24) In the engine harness, approximately 15 cm (6 in) from the breakout for the engine controls module (ECM), toward engine controls module (ECM)  | --  | |
S165 (L18)  | (CKT 250) In the ignition coil harness  | --  | |
S166 (L18)  | (CKT 250) In the ignition coil harness  | --  | |
S167 (LLY/LMM)  | (CKT 2) In the engine chassis harness, approximately 15 cm (6 in) from the generator breakout, toward starter  | --  | |
S169 (L18)  | (CKT 351) In the engine harness, approximately 4 cm (1.5 in) from the breakout to throttle actuator controls (TAC) module, toward the powertrain controls module (PCM)  | --  | |
S169 (LF8)  | (CKT 351) In the engine harness, approximately 13 cm (5 in) from the breakout to inline to chassis harness C100, toward the underhood fuse block  | --  | |
S170 (LF8)  | (CKT CF151) In the engine harness  | --  | |
S171 (LF8)  | (CKT 2361) In the engine harness, approximately 17 cm (7 in) from the breakout to inline to I/P C109, toward that inline  | --  | |
S172 (LF8)  | (CKT 2361) In the engine harness, approximately 17 cm (7 in) from the breakout to inline to I/P C109, toward that inline  | --  | |
S173 (LF8)  | (CKT CF90) In the engine harness  | V  | |
S174 (LF8)  | (CKT CF165) In the engine harness  | --  | |
S175 (A/T)  | (CKT 2528) In the internal transmission harness  | --  | |
S176 (A/T)  | (CKT 323) In the internal transmission harness  | --  | |
S177 (A/T)  | (CKT 407) In the internal transmission harness  | --  | |
S184 (L18)  | (CKT 539) In the fuel injector harness  | --  | |
S185 (L18)  | (CKT 539) In the ignition coil harness  | --  | |
S186 (L18)  | (CKT 339) In the fuel injector harness  | --  | |
S187 (L18)  | (CKT 339) In the ignition coil harness  | --  | |
S188 (LF8)  | (CKT CF38) In the engine harness  | --  | |
S189 (L18)  | (CKT 2129) In the ignition coil harness  | --  | |
S190 (C60)  | (CKT 459) In the A/C harness  | --  | |
S191 (LF8)  | (CKT DF21) In the engine harness  | --  | |
S192 (L18)  | (CKT 2130) In the ignition coil harness  | --  | |
S193 (LF8)  | (CKT CF56) In the engine harness  | --  | |
S195 (LF8)  | (CKT CF66) In the engine harness  | --  | |
S196 (LF8)  | (CKT 470) In the exhaust harness  | --  | |
S197 (LF8)  | (CKT CF60) In the engine harness  | --  | |
S198 (LF8)  | (CKT 7) In the fuel injector harness 1  | --  | |
S199 (LF8)  | (CKT 7) In the fuel injector harness 2  | --  | |
S200  | (CKT 141) In the I/P harness, approximately 25 cm (10 in) from the breakout for the data link resistor 3, toward the fuse block - I/P  | --  | |
S201  | (CKT 300) In the I/P harness, approximately 19 cm (7.5 in) from the breakout to fuse block I/P 1, toward that fuse block  | --  | |
S202  | (CKT 1142) In the I/P harness, approximately 30 cm (12 in) from the breakout for the data link resistor 3, toward the fuse block - I/P  | --  | |
S203  | (CKT 142) In the I/P harness, approximately 12 cm (4.75 in) from the breakout for the I/P gage center toward the fuse block - I/P  | --  | |
S204  | (CKT 242) In the I/P harness, approximately 6.5 cm (2.5 in) from the breakout for the inline connector to steering column C201, toward that connector  | --  | |
S205  | (CKT 1140) In the I/P harness, approximately 7.5 cm (7 in) from the breakout for the I/P gage center toward the fuse block - I/P  | --  | |
S206  | (CKT 2609) In the I/P harness, approximately 32 cm (12.5 in) from the breakout to the data link resistor 3, toward the underhood fuse block - secondary  | --  | |
S207  | (CKT 618) In the I/P harness, approximately 16 cm (8 in) from the breakout to the data link resistor 3, toward the underhood fuse block - secondary  | --  | |
S208  | (CKT 2509) In the I/P harness, approximately 4 cm (2.5 in) from the breakout to the data link resistor 3, toward the underhood fuse block - secondary  | --  | |
S209  | (CKT 619) In the I/P harness, approximately 8 cm (3.5 in) from the breakout to the data link resistor 3, toward the underhood fuse block - secondary  | --  | |
S210  | (CKT 641) In the I/P harness, approximately 5.5 cm (2 in) from the breakout for HVAC control assembly toward the fuse block - I/P  | --  | |
S211  | (CKT 39) In the I/P harness, approximately 4 cm (1.5 in) from the breakout for HVAC control assembly toward the fuse block - I/P  | --  | |
S212  | (CKT 441) In the I/P harness, approximately 20 cm (8 in) from the breakout for the data link resistor 3, toward the fuse block - I/P  | --  | |
S213  | (CKT 139) In the I/P harness, approximately 6.5 cm (2.5 in) from the breakout for HVAC control assembly toward the fuse block - I/P  | --  | |
S214  | (CKT 806) In the I/P harness, approximately 5 cm (2 in) from the breakout to the data link resistor 3, toward the fuse block - I/P  | --  | |
S215  | (CKT 1020) In the I/P harness, approximately 2.5 cm (1 in) from the breakout for HVAC control assembly toward the fuse block - I/P  | --  | |
S216  | (CKT 1020) In the I/P harness, approximately 2.5 cm (1 in) from the breakout for HVAC control assembly toward the fuse block - I/P  | --  | |
S217  | (CKT 43) In the I/P harness, approximately 10 cm (4 in) from the breakout for IPC, toward chime module  | --  | |
S218  | (CKT 540) In the I/P harness, approximately 6.5 cm (2.6 in) from the breakout for C207 between the breakout and C207  | --  | |
S219  | (CKT 840) In the I/P harness, approximately 1.5 cm (0.5 in) from the breakout for HVAC control assembly toward the fuse block - I/P  | --  | |
S220  | (CKT 439) In the I/P harness, approximately 26 cm (10 in) from the breakout for the fuse block - I/P 1, toward that fuse block  | --  | |
S221  | (CKT 1320) In the I/P harness, approximately 35 cm (14 in) from the breakout for the data link resistor 3, toward the fuse block - I/P  | --  | |
S222  | (CKT 541) In the I/P harness, approximately 16.5 cm (6.5 in) from the breakout for the fuse block - I/P, toward that fuse block  | --  | |
S223  | (CKT 239) In the I/P harness, approximately 32.5 cm (13 in) from the breakout for the data link resistor 3, toward the fuse block - I/P  | --  | |
S224  | (CKT 241) In the I/P harness, approximately 10 cm (4 in) from the breakout for the gauge center, toward the gauge center connector  | ||
S225  | (CKT 1382) In the I/P harness, approximately 6 cm (2.5 in) from the breakout for X201, toward the data link connector breakout  | --  | |
S226 (LF8)  | (CKT440) In the I/P harness, approximately 2.5 cm (1 in) from the breakout to data link connector, toward the DIC breakout  | --  | |
S230  | (CKT 1696) In the I/P harness, approximately 10 cm (4 in) from the breakout for C201 between the breakout and C201  | --  | |
S232  | (CKT 1451) In the I/P harness, approximately 14.5 cm (6 in) from the breakout to the IPC, toward the chime module  | --  | |
S235  | (CKT 750) In the I/P switchbank harness, approximately 25 cm (9.6 in) from the I/P harness connector  | --  | |
S236  | (CKT 750) In the I/P switchbank harness, approximately 6 cm (2.3 in) from the I/P harness connector  | --  | |
S237  | (CKT 750) In the I/P switchbank harness, approximately 8 cm (3 in) from the I/P harness connector  | --  | |
S238  | (CKT 750) In the I/P harness, approximately 26 cm (10 in) from the breakout for the IPC, toward the chime module  | --  | |
S239  | (CKT 750) In the I/P harness, approximately 4 cm (1.5 in) from the breakout for the IPC, toward the chime module  | --  | |
S240  | (CKT 750) In the I/P harness, approximately 2.5 cm (1 in) from the breakout for the headlamp switch toward the fuse block - I/P  | --  | |
S241  | (CKT 550) In the cross body harness, approximately 30 cm (12 in) from the breakout to right door harness inline C212, toward the left side  | --  | |
S243  | (CKT 450) In the I/P harness, approximately 16 cm (15.5 in) from the breakout for C202 toward the fuse block - I/P  | --  | |
S244  | (CKT 450) In the I/P harness, approximately 12 cm (5 in) from the breakout to the data link resistor 3, toward the underhood fuse block - secondary  | --  | |
S245  | (CKT 450) In the I/P harness, approximately 16 cm (15.5 in) from the breakout for C202 toward the fuse block - I/P  | --  | |
S249  | (CKT 2509) In the I/P switchbank harness, approximately 14 cm (11.5 in) from the I/P harness connector  | --  | |
S250  | (CKT 267) In the I/P harness, approximately 6.5 cm (2.5 in) from the breakout to the inline X202 to switchbank harness, toward that connector  | --  | |
S251  | (CKT 267) In the I/P switchbank approximately 10 cm (4 in) from the outside rearview mirror switch connector  | --  | |
S252  | (CKT 15) In the I/P harness, approximately 5 cm (2 in) from the breakout for the data link connector (DLC) toward the fuse block - I/P  | --  | |
S253  | (CKT 14) In the I/P harness, approximately 7.5 cm (3 in) from the breakout for the data link connector (DLC) toward the fuse block - I/P  | --  | |
S254  | (CKT 343) In the cross body harness, approximately 16.5 cm (6.5 in) from the breakout to right door harness inline C212, toward the left side  | --  | |
S255  | (CKT 640) In the I/P harness, approximately 12 cm (5 in) from the breakout for C202, toward the fuse block - I/P  | --  | |
S256 (C6/C7/C8)  | (CKT 318) In the I/P harness, approximately 4 cm (1.5 in) from the breakout to the steering column, toward the IPC connector breakout  | --  | |
S257 (C6/C7/C8)  | (CKT 319) In the I/P harness, approximately 8 cm (3 in) from the breakout to the steering column, toward the IPC connector breakout  | --  | |
S258  | (CKT 1467) In the switchbank harness, approximately 2.5 cm (1 in) from the breakout for the regeneration switch, toward the inline to the I/P harness  | --  | |
S259  | (CKT 21) In the I/P harness, approximately 2.5 cm (1 in) from the breakout for chime module toward the fuse block - I/P  | --  | |
S260  | (CKT 28) In the I/P harness, approximately 11 cm (4 in) from the breakout to the inline to crossbody harness X207, toward that connector  | --  | |
S261  | (CKT 9) In the I/P harness, approximately 5 cm (2 in) from the breakout for steering column connector X201, toward the data link connector breakout  | --  | |
S262  | (CKT 17) In the I/P harness, approximately 20 cm (8 in) from the breakout for the data link resistor 3, toward the underhood fuse block - secondary  | --  | |
S263  | (CKT 10) In the I/P harness, approximately 17 cm (6.5 in) from the breakout to the headlamp switch, toward that switch  | --  | |
S264  | (CKT 592) In the I/P harness, approximately 21 cm (8.5 in) from the breakout for IPC toward the fuse block - I/P  | --  | |
S265  | (CKT 11) In the I/P harness, approximately 10.5 cm (4 in) from the breakout for the I/P gage center toward the fuse block - I/P  | --  | |
S267  | (CKT 2509) In the cross body harness, approximately 25 cm (10 in) from the breakout to right door harness inline X212, toward the left side  | --  | |
S268  | (CKT 140) In the I/P harness, approximately 28 cm (11 in) from the breakout for the data link resistor 3, toward the underhood fuse block - secondary  | --  | |
S269 (L18/LF8/JE4)  | (CKT 420) In the I/P harness, approximately 23 cm (9 in) from the breakout for the inline to crossbody harness X207, toward that connector  | --  | |
S270  | (CKT 1134) In the I/P harness, approximately 20.5 cm (8 in) from the breakout for the headlamp switch, toward the breakout to the body harness  | --  | |
S272  | (CKT 1139) In the I/P harness, approximately 6 cm (2.5 in) from the breakout to the body/roof inline connector C203, toward data link connector  | --  | |
S273  | (CKT 1922) In the I/P harness, approximately 15 cm (6 in) from the breakout to the data link resistor 3, toward the fuse block - I/P  | --  | |
S274  | (CKT 1921) In the I/P harness, approximately 10 cm (4 in) from the breakout to the data link resistor 3, toward the fuse block - I/P  | --  | |
S276  | (CKT 2361) In the engine harness, approximately 3 cm (1.2 in) from the C121 breakout toward the engine control module (ECM)  | --  | |
S277 (w/o LF8)  | (CKT 2362) In the I/P harness, approximately 6.5 cm (2.5 in) from the breakout to the chime module, toward that module  | --  | |
S277 (LF8)  | (CKT 2362) In the I/P harness, approximately 16.5 cm (6.5 in) from the breakout for the I/P gage center toward the fuse block - I/P  | --  | |
S278 (w/o LF8)  | (CKT 2361) In the I/P harness, approximately 7.5 cm (3 in) from the breakout to the chime module, toward that module  | --  | |
S278 (LF8)  | (CKT 2361) In the I/P harness, approximately 17.5 cm (7 in) from the breakout for the I/P gage center toward the fuse block - I/P  | --  | |
S279 (w/o LF8)  | (CKT 2362) In the I/P harness, approximately 16.5 cm (6.5 in) from the breakout for the I/P gage center, toward the fuse block - I/P  | --  | |
S279 (LF8)  | (CKT 2362) In the I/P harness, approximately 5 cm (2 in) from the breakout for the chime module, toward the breakout for the inline to switchbank X202 connector  | --  | |
S280 (w/o LF8)  | (CKT 2361) In the I/P harness, approximately 17.5 cm (7 in) from the breakout for the I/P gage center toward the fuse block - I/P  | --  | |
S280 (LF8)  | (CKT 2361) In the I/P harness, approximately 7 cm (3 in) from the breakout for the chime module, toward the breakout for the inline to switchbank C202 connector  | --  | |
S281 (w/o L18)  | (CKT 2362) In the I/P harness, approximately 8.5 cm (3.5 in) from the breakout for the chime module, toward the data link connector breakout  | --  | |
S282 (w/o L18)  | (CKT 2361) In the I/P harness, approximately 10.5 cm (4 in) from the breakout for the chime module, toward the data link connector breakout  | --  | |
S284  | (CKT 488) In the I/P harness, approximately 24 cm (9.5 in) from the breakout for the data link resistor 3, toward the underhood fuse block - secondary  | --  | |
S285  | (CKT 1944) In the switchbank harness, approximately 14 cm (5.5 in) from the connector to I/P, toward switches  | --  | |
S287 (LF8)  | (CKT 2361) In the I/P harness, approximately 7.5 cm (3 in) from the breakout to the chime module, toward that module  | --  | |
S288 (LF8)  | (CKT 2362) In the I/P harness, approximately 6.5 cm (2.5 in) from the breakout to the chime module, toward that module  | --  | |
S290  | (CKT 6105) In the I/P harness, approximately 10 cm (4 in) from the breakout to the data link resistor 3, toward the fuse block - I/P  | --  | |
S291  | (CKT 6106) In the I/P harness, approximately 7.5 cm (3 in) from the breakout to the data link resistor 3, toward the fuse block - I/P  | --  | |
S300  | (CKT 540) In the cross body harness, approximately 45 cm (18 in) from the breakout to the door lock relay, toward door lock controls module  | --  | |
S301 (w/o UZA)  | (CKT 750) In the body/roof harness, approximately 13 cm (5 in) before the console harness connector and dome/marker lamps breakouts  | --  | |
S302 (Crew Cab)  | (CKT 550) In the body/roof harness, approximately 8 cm (3 in) before the left door harness connector breakout  | --  | |
S304  | (CKT 267) In the crossbody harness, approximately 19 cm (7.5 in) from the breakout to the door lock relay, toward the inline connector to I/P X207  | --  | |
S305  | (CKT 195) In the cross body harness, approximately 16 cm (6.5 in) from the breakout to the door lock relay, toward door lock control module  | --  | |
S306  | (CKT 194) In the cross body harness, approximately 9.5 cm (4 in) from the breakout to the door lock relay, toward door lock control module  | --  | |
S307  | (CKT 294) In the cross body harness, approximately 25 cm (10 in) from the breakout to the door lock relay, toward door lock control module  | --  | |
S308 (Crew Cab)  | (CKT 294) In the body/roof harness, approximately 62 cm (24 in) from the breakout for C203  | --  | |
S309  | (CKT 295) In the cross body harness, approximately 38.5 cm (15.5 in) from the breakout to the door lock relay, toward door lock controls module  | --  | |
S310 (Crew Cab)  | (CKT 295) In the body/roof harness, approximately 52 cm (20 in) from the breakout for C203  | --  | |
S312 (Crew Cab)  | (CKT 343) In the body/roof harness, approximately 42 cm (16 in) from the breakout for C203  | --  | |
S313  | (CKT 24) In the backup alarm harness  | --  | |
S314  | (CKT 350) In the backup alarm harness  | --  | |
S315 (C4/C5)  | (CKT 318) In the rear chassis harness, approximately 6.5 cm (2.5 in) from the breakout to the inline C409 to fuel tank harness, toward the ground splice pack  | --  | |
S316 (C4/C5)  | (CKT 319) In the rear chassis harness, approximately 10.5 cm (4 in) from the breakout to the inline C409 to fuel tank harness, toward the ground splice pack  | --  | |
S317  | (CKT 21) In the crossbody harness, approximately 12.5 cm (5 in) from the breakout to the door lock relay, toward the inline connector to I/P C207  | --  | |
S319  | (CKT 24) In the rear chassis harness, approximately 6.5 cm (2.5 in) from the breakout for the ground block toward the electronic brake control module (EBCM)  | --  | |
S320  | (CKT 11) In the rear chassis harness, approximately 6.5 cm (2.5 in) from the breakout for the inline to the right side forward lamp harness C108, toward the right side  | --  | |
S321  | (CKT 12) In the rear chassis harness, approximately 11 cm (4.5 in) from the breakout for the inline to the right side forward lamp harness C108, toward the left side  | --  | |
S322  | (CKT 328) In the cross body harness, approximately 10 cm (4 in) from the breakout to right door harness inline C212, toward the left side  | --  | |
S323 (Crew Cab)  | (CKT 328) In the body roof harness, approximately 3 cm (1 in) from the right door lock actuator  | --  | |
S324 (Crew Cab)  | (CKT 40) In the body/roof harness  | --  | |
S325 (Crew Cab)  | (CKT 156) In the body/roof harness, approximately 18 cm (7 in) before the left door harness connector breakout  | --  | |
S326 (Crew Cab)  | (CKT 2509) In the body/roof harness, approximately 10 cm (4 in) from the console harness connector breakout, toward the left door harness connector breakout  | --  | |
S328 (JE4)  | (CKT 2662) In the rear chassis harness, approximately 4 cm (2 in) from the breakout for the air dryer, toward the breakout for the inline to the I/P harness  | --  | |
S329  | (CKT 746) In the crossbody harness, approximately 6 cm (2.5 in) from the breakout to the door lock relay, toward the inline connector to I/P C207  | --  | |
S330  | (CKT 1139) In the body harness, approximately 16 cm (6 in) or 30 cm (12 in) from the A/T shift lever connector  | --  | |
S331 (JE4)  | (CKT 2362) In the chassis harness, approximately 14.5 cm (6 in) from the breakout for the left front wheel speed sensor, toward data link resistor 2  | --  | |
S332 (JE4)  | (CKT 2361) In the chassis harness, approximately 6.5 cm (2.5 in) from the breakout for the left front wheel speed sensor, toward data link resistor 2  | --  | |
S333 (LG5)  | (CKT 451) In the engine harness, approximately 1.5 cm (0.5 in) from the inline to transmission harness C102, toward the underhood fuse block  | --  | |
S334 (LG5)  | (CKT 451) In the I/P harness, approximately 8 cm (3.5 in) from the breakout to the data link resistor 3, toward the inline to crossbody harness  | --  | |
S336 (JE4)  | (CKT 1808 In the chassis harness approximately 15 cm (6 in) from the breakout to the inline to the left forward lamp harness C107, toward right side  | --  | |
S340 (JE4)  | (CKT 441) In the chassis harness approximately 30 cm (12 in) from the breakout to the inline to the left forward lamp harness C107, toward right side  | --  | |
S400 (JE3)  | (CKT 151) In the rear chassis harness, approximately 4.5 cm (2 in) from the breakout for X108 to the right side forward lamp harness, toward left side  | --  | |
S401  | (CKT 350) In the ABS harness, approximately 13 cm (5 in) from the breakout to the rear axle harness, toward traction control valve  | --  | |
S402  | (CKT 350) In the rear chassis harness, approximately 100 cm (40 in) from the breakout to ground splice pack SP400, toward the tail lamps  | --  | |
S404  | (CKT 350) In the rear chassis harness, approximately 18.5 cm (7.5 in) from the breakout for C108 to the right side forward lamp harness, toward right side  | --  | |
S406  | (CKT 351) In the rear chassis harness, approximately 14.5 cm (6 in) from the breakout for C108 to the right side forward lamp harness, toward right side  | --  | |
S407 (Dual Tanks)  | (CKT 120) In the fuel tank harness  | --  | |
S408 (C5/C6)  | (CKT 470) In the fuel tank harness 16 cm (6 in) from the breakout for X123  | --  | |
S409 (C5/C6)  | (CKT 642) In the rear chassis harness, approximately 6.5 cm (2.5 in) from the breakout for RR WSS toward the trailer connector  | --  | |
S410  | (CKT 24) In the tail lamp harness, approximately 6.5 cm (2.5 in) from the breakout to rear chassis harness, toward the right side tail lamps  | --  | |
S411 (JE3)  | (CKT 1928) In the chassis harness, approximately 17.5 cm (7 in) from the breakout to the power booster pump, toward air compressor  | --  | |
S412  | (CKT 241) In the axle harness  | --  | |
S413 (JE3)  | (CKT 1470) In the chassis harness, approximately 8 cm (3 in) from the breakout to the power booster pump, toward power booster fluid flow switch  | --  | |
S415 (C6/C7/C8)  | (CKT 470) In the fuel tank harness, approximately 4 cm (1.5 in) from the breakout for the I/P connector C202 toward the left door lock switch connector  | --  | |
S416 (JE3)  | (CKT 151) In the rear chassis harness, approximately 14 cm (5.5 in) from the breakout for the power booster, toward the breakout to forward lamps  | --  | |
S417 (JE3)  | (CKT 151) In the rear chassis harness, approximately 7 cm (3 in) from the breakout for the power booster, toward the breakout to forward lamps  | --  | |
S418  | (CKT 350) In the tail lamp harness, approximately 6.5 cm (2.5 in) from the breakout to rear chassis harness, toward the left side tail lamps  | --  | |
S419  | (CKT 350) in the fuel tank harness  | --  | |
S421 (K16)  | (CKT 350) In the air compressor harness  | --  | |
S430  | (CKT 2609) In the chassis harness on the right hand frame rail under the cab, approximately 10.5 cm (4 in) before the breakout to G203  | --  | |
S431  | (CKT 2509) In the chassis harness on the right hand frame rail under the cab, approximately 14.5 cm (6 in) before the breakout to G203  | --  | |
S500  | (CKT 540) In the driver door harness, approximately 4.5 cm (1.75 in) from the breakout for the outside rearview mirror switch toward the switch  | --  | |
S501  | (CKT 501) In the driver door harness, approximately 9 cm (4 in) from the park brake pressure sensor connector  | --  | |
S502 (AU3/A31)  | (CKT 201) In the driver door harness, approximately 3 cm (1 in) from the window actuator motor breakout toward the pass through  | --  | |
S503 (AU3/A31)  | (CKT 118) In the driver door harness, approximately 30 cm (11.75 in) from the breakout for the tweeter connector toward the cross body harness  | --  | |
S505  | (CKT 343) In the driver door harness, approximately 4.5 cm (1.75 in) from the breakout for the OSRVM connector toward the cross body harness  | --  | |
S600  | (CKT 550) In the rear passenger door harness, approximately 6.5 cm (2.5 in) from the breakout for the rear window switch toward C700  | --  | |
S602 (AU3/A31)  | (CKT 200) In the front passenger door harness, approximately 30 cm (12 in) from the breakout for the speaker - RF door toward C500  | --  | |
S603 (AU3/A31)  | (CKT 117) In the front passenger door harness, approximately 20 cm (8 in) from the breakout for the speaker - RF door toward C500  | --  | |
S605  | In the right power door lock harness, approximately 11 cm (1 in) from the right door lock actuator  | --  | |
S700 (Crew Cab)  | (CKT 550) In the left rear door harness, approximately 11 cm (4 in) from the window switch  | --  | |
S800 (Crew Cab)  | (CKT 550) In the right rear door harness, approximately 11 cm (4 in) from the window switch  | --  | |
SP203 (12 cavities)  | Behind the left side of the I/P below the headlamp switch  | ||
SP400 (Ground Block) (6 cavities)  | On the inboard side of the right frame rail behind the cab, part of the negative battery cable  |