Harness Routing Views. Chevrolet Blazer - 4WD

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2001 🢒 Blazer - 4WD - RHD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L60-E 🢒 Harness Routing Views

Figure 1:

Negative Battery Cable


(1)	Water Pump
(2)	G107
(3)	Negative Battery Cable

Figure 2:

Forward Lamps Wiring Harness


(1)	Ambient Air Temperature Sensor (DIDM)
(2)	LH Headlamp Connector
(3)	Ground G111
(4)	Splice Pack SP100
(5)	LH Headlamp Connector
(6)	Forward Lamps Wiring Harness
(7)	LH Turn Signal Lamp
(8)	Headlamp Washer Pump Fluid Reservoir
(9)	Headlamp Washer Pump Connector
(10)	Headlamp Washer Relay
(11)	Splice Pack SP101
(12)	RH Turn Signal Lamp
(13)	RH Headlamp Connectors
(14)	Radiator Support
(15)	S108
(16)	S112
(17)	S107
(18)	Ground G112

Figure 3:

Body Harness, Right Front


(1)	Brake Pressure Differential Switch Connector
(2)	Electronic Brake Control Module (EBCM)
(3)	Underhood Fuse Block, Connector C1
(4)	Underhood Fuse Block, Connector C5
(5)	Underhood Fuse Block, Connector C6
(6)	C114
(7)	G110
(7)	G110
(8)	G108, G112
(9)	Right Front Radiator Support
(10)	Right Front Fender
(11)	C106
(12)	C109

Figure 4:

Body Harness, Bulkhead


(1)	Electronic Brake Control Module (EBCM) Connector C1
(2)	G117
(3)	S117
(4)	S116
(5)	S119
(6)	Flash-to-Pass Relay
(7)	Park Lamp Switch Relay
(8)	S113
(9)	S118
(10)	S138
(11)	C103
(12)	Windshield Wiper Motor Connector
(13)	S127, S122
(14)	Electronic Brake Control Module (EBCM) Connector C3
(15)	Brake Pressure Differential Switch
(16)	Cruise Control Module (CCM) Connector

Figure 5:

Front Frame Grounds


(1)	Front Wheel Speed Sensor - LH
(2)	Inflatable Restraint Front End Discriminating Sensor - LH
(3)	Inflatable Restraint Front End Discriminating Sensor - RH
(4)	G106
(5)	G118
(6)	Front Wheel Speed Sensor - RH

Figure 6:

A/C Accumulator


(1)	A/C Compressor Cycling Switch
(2)	A/C Accumulator
(3)	C100

Figure 7:

Automatic Transmission C175


(1)	Automatic Transmission
(2)	C175
(3)	Engine Harness
(4)	Engine Harness

Figure 8:

Manual Transmission Harness View


(1)	Manual Transmission
(2)	Heated Oxygen Sensor- LF, H02S, Bank 1, Sensor 1
(3)	Backup Lamp Switch Connector
(4)	C104, Chassis Harness
(5)	C104, Engine Harness
(6)	C105
(7)	Engine Harness

Figure 9:

Forward Lamps Harness - LH


(1)	C132
(2)	Auxiliary Side Front Turn Signal Lamp - LH
(3)	Horn
(4)	Horn Connector
(5)	Auxiliary Side Front Turn Signal Lamp - LH
(6)	Forward Lamps Harness
(7)	C130
(8)	Fender - LH

Figure 10:

Transfer Case


(1)	Transfer Case Encoder Motor Connector C1 and Connector C2
(2)	Transfer Case Rear Propeller Shaft Speed Sensor
(3)	Vehicle Speed Sensor (VSS)
(4)	Transfer Case Front Propeller Shaft Speed Sensor
(5)	Engine Harness
(6)	S140

Figure 11:

Heated Oxygen Sensor (HO2S) Extension Harness


(1)	C100
(2)	S150, S151
(3)	Heated Oxygen Sensor (HO2S) Bank 2, Sensor 1
(4)	Heated Oxygen Sensor (HO2S) Bank 1, Sensor 3

Figure 12:

IP Wiring Harness


(1)	Passenger Inflatable Restraint Module
(2)	Inflatable Restraint IP Module Connector
(3)	IP Compartment Lamp

Figure 13:

Body Harness, Left Front


(1)	Electric Actuator (Temperature)
(2)	Radio Antenna Cable
(3)	HVAC Control Vacuum Solenoid Valve
(4)	S200
(5)	Body Harness to the Automatic Transmission
(6)	S216
(7)	S222
(8)	S219
(9)	G200, G201, G202
(10)	S209
(11)	Headlamp Grounding Relay
(12)	C200
(13)	C203
(14)	Transfer Case Shift Control Module, Connector C2
(15)	Transfer Case Shift Control Module
(16)	Transfer Case Shift Control Module, Connector C1
(17)	C209
(18)	S228, S229, D101
(19)	S213

Figure 14:

Body Harness, Right Front


(1)	Stoplamp Switch
(2)	P100
(3)	S231, S232, D200
(4)	S221
(5)	Body Relay Block
(6)	C217
(7)	S223, S224, D202
(8)	S211
(9)	G204, G205
(10)	G203
(11)	Remote Control Door Lock Receiver (Japan Only)
(12)	Data Link Connector (DLC)
(13)	S235, S236, D201
(14)	C214
(15)	C211
(16)	Body Control Module (BCM), Connector C2
(17)	Body Control Module (BCM), Connector C1
(18)	Lower Discharge Air Temperature Sensor Connector
(19)	S201
(20)	S202
(21)	S212
(22)	Clutch Pedal Position Switch Connector
(23)	S207
(24)	S203
(25)	S204

Figure 15:

Automatic Transmission Controller


(1)	Automatic Transmission Controller
(2)	Park Lock Solenoid
(3)	Park Switch
(4)	Automatic Transmission Controller Indicator Lamp
(5)	S206
(6)	Automatic Transmission Shift Lock Solenoid
(7)	Body Harness to Rear Wiper/Washer and Endgate Window Release Switch
(8)	Automatic Transmission Controller Connector

Figure 16:

Instrument Panel, RH


(1)	IP Dimmer Switch Connector
(2)	IP Fuse Block
(3)	IP Harness
(4)	S230
(5)	C217
(6)	Side Door Jamb Switch, RF Connector
(7)	Side Door Jamb Switch, RF
(8)	IP Fuse Block Access Panel
(9)	Fog Lamp Switch
(10)	Headlamp Leveling Switch
(11)	Instrument Panel
(12)	IP Dimmer Switch

Figure 17:

Accessories Power Receptacle Tray


(1)	Accessories Power Receptacle Harness
(2)	C223
(3)	IP Insulator
(4)	Accessories Power Receptacle Tray
(5)	Accessories Power Receptacle, RH
(6)	Accessories Power Receptacle, LH

Figure 18:

IP Wiring Harness Composite View


(1)	Remote Control Door Lock Receiver
(2)	Hazard Switch Connector
(3)	Transfer Case Select Switch Connectors C2 and C1
(4)	Upper Discharge Air Temperature Sensor
(5)	Radio Connector
(6)	Electronic Climate Control (ECC) Module Connector
(7)	Radio Speaker Connector, LF
(8)	Ambient Light Sensor Connector
(9)	IP Compartment Lamp
(10)	Inflatable Restraint IP Module
(11)	Instrument Panel (IP)
(12)	S227
(13)	C203
(14)	C200
(15)	Courtesy Lamp, LH Console
(16)	C223
(17)	S208, S272, S273, S274, S275, S287, SP288
(18)	SP203
(19)	C224
(20)	S283
(21)	S205, S224, S225, S226
(22)	Body Control Module Connector C3
(23)	Sun Load Temperature Sensor
(24)	Courtesy Lamp, RH Console
(25)	C217
(26)	Side Door Jamb Switch, RF
(27)	IP Fuse Block
(28)	Radio Speaker Connector, LF
(29)	IP Dimmer Switch Connector
(30)	Instrument Cluster Connector
(31)	S223

Figure 19:

Dome Lamp Harness (w/Sunroof)


(1)	C301
(2)	S300
(3)	Sunroof Motor and Drive
(4)	Sunroof Module, Connector C2
(5)	Sunroof Module, Connector C1
(6)	C300
(7)	Sunroof Module
(8)	S310
(9)	S302
(10)	S332
(11)	Driver Information Display Module Connector
(12)	Driver Information Display Module
(13)	Interior Air Temperature Sensor

Figure 20:

Floor Panel


(1)	S305
(2)	S309
(3)	S306
(4)	S308
(5)	C317
(6)	S304
(7)	Inflatable Restraint Sensing and Diagnostic Module Connector
(8)	Inflatable Restraint Sensing and Diagnostic Module
(9)	C315
(10)	S301

Figure 21:

Body Wiring to Left Front Seat


(1)	C317
(2)	Seat

Figure 22:

Rear Door Wiring Harness (RH Shown, LH Opposite)


(1)	Door
(2)	Side Door Lock Actuator, RR
(3)	Side Window Switch, RR
(4)	Radio Speaker, RR (LR Similar)
(5)	Side Window Regulator Motor, RR (LR Similar)
(6)	C404 (LH) or C406 (RH)
(7)	C405 (LH) or C407 (RH)
(8)	P800 (RH) or P700 (LH)
(9)	Side Window Switch, RR Connector

Figure 23:

Rear Lamp Connections


(1)	C403 (LH) and C402 - RH
(2)	S419 - LH and S420 - RH
(3)	P402 - RH and P403 - LH
(4)	Park, Turn Signal, and Backup Lamps - LH Rear, RH Opposite
(5)	Rear Fog Lamp

Figure 24:

Endgate Connectors


(1)	Body Floor
(2)	C411, C412 and C413
(3)	Endgate
(4)	Window Washer Tube Check Valve, Rear

Figure 25:

Rear Frame Location View


(1)	Trailer Wiring Provision
(2)	Splice Pack SP423
(3)	Evaporative (EVAP) Emission Canister Control Valve
(4)	C430
(5)	Fuel Filler Neck Ground Strap
(6)	G402

Figure 26:

Accessories Power Receptacle, Rear


(1)	Body Side Trim Panel
(2)	Accessories Power Receptacle, Rear

Figure 27:

Door Harness (RF Shown, LF Opposite)


(1)	Outside Rear View Folding Mirror Switch Connector
(2)	S603 (RH), S502 (LH)
(3)	S604 (RH)
(4)	Door Lock Cylinder Switch Connector, RH
(5)	Door Handle Switch Connector, RH
(6)	Side Door Lock Actuator Connector, RH
(7)	Side Window Regulator Motor, RF Connector C1
(8)	Side Window Regulator Motor, RF Connector C2
(9)	Radio Speaker, Front Side Door Connector, RH
(10)	S600 (RH)
(11)	S602 (RH)
(12)	P600 (RH), P500 (LH)
(13)	C610 (RH)
(14)	C601 (RH), C501 (LH)
(15)	Outside Rear View Mirror Connector, RH
(16)	S601 (RH), S501 (LH)

Figure 28:

Outside Rear View Mirror


(1)	P501 (LH), P601 (RH)
(2)	Outside Rear View Mirror, LH (RH Opposite)
(3)	C504 (LH), C604 (RH)

Figure 29:

Endgate Window Release


(1)	Endgate
(2)	Rear Window Wiper Motor Controller Connector
(3)	Rear Window Wiper Motor Controller
(4)	Rear Window Wiper Cutout and Liftglass Ajar Jamb Switch Connector
(5)	Rear Window Wiper Cutout and Liftglass Ajar Jamd Switch
(6)	Endgate Lock Cylinder Switch
(7)	P900
(8)	Endgate Window Release Actuator Connector
(9)	Endgate Lock Cylinder Switch Connector

Figure 30:

Rear Roof


(1)	High Mount Stop Lamp (HMSL)
(2)	Cargo Lamp
(3)	High Mount Stop Lamp Connector
(4)	P404

Figure 31:

Engine Wiring, RH Side


(1)	Exhaust Gas Recirculation (EGR) Valve Connectors
(2)	Generator Connector
(3)	Crankshaft Position (CP) Sensor Connector
(4)	Starter Solenoid Connector
(5)	Starter Solenoid
(6)	S101
(7)	Electronic Ignition Control Module (EICM) Connector
(8)	Ignition Coil Connector

Figure 32:

Engine Wiring, Top Left


(1)	Mass Airflow (MAF) Sensor Connector
(2)	Intake Air Temperature (IAT) Sensor Connector
(3)	C103

Figure 33:

Engine Wiring, Right Rear


(1)	Evaporative (EVAP) Emission Canister Purge Solenoid Valve
(2)	Manifold Absolute Pressure (MAP) Sensor
(3)	S102
(4)	G102, G103
(5)	Engine Oil Pressure Gage Sensor Connector
(6)	S152
(7)	G104, G105
(8)	Camshaft Position (CMP) Sensor Connector
(9)	Central Sequential Fuel Injection Connector

Figure 34:

Engine Wiring- LR


(1)	Throttle Position Sensor (TPS) Connector
(2)	Idle Air Control (IAC) Valve Connector
(3)	Knock Sensor (KS) Connector
(4)	Engine Coolant Temperature (ECT) Sensor Connector
(5)	A/C Compressor High Pressure Cutoff Switch
(6)	A/C Compressor Clutch Coil Connector
(7)	A/C Compressor Clutch Diode, S103 and S104

Figure 35:

Battery Fuse


(1)	Radiator Support
(2)	Fuse Holder - Battery Fuse
(3)	G108
(4)	S153

Figure 36:

Rear License Lamps


(1)	Connector C430
(2)	Rear License Lamp Mounting Bracket
(3)	RH License Lamp
(4)	Center License Lamp
(5)	LH License Lamp
(6)	S425
(7)	S426
(8)	Rear License Lamp Wiring Harness

Figure 37:

Body Opening Frame, Rear


(1)	Trailer Wiring Provisions
(2)	C403
(3)	G450
(4)	S427
(5)	S428
(6)	G420
(7)	C402
(8)	S404
(9)	S405
(10)	S406

Figure 38:

Radiator Support, Inside RH


(1)	Radiator Support
(2)	Forward Lamps Harness
(3)	Splice Pack SP101
(4)	Ground G112