GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2005 🢒 GTO 🢒 Body 🢒 Wiring Systems 🢒 Harness Routing Views
Figure 1:

Full Vehicle Harness Routing View
Object Number: 1553645 Size: MF
(1)Battery Wiring Harness
(2)Front Wiring Harness
(3)Right-Hand Door Wiring Harness
(4)Visor Wiring Harness
(5)Body Wiring Harness
(6)Left-Hand Door Wiring Harness
(7)Powertrain Wiring Harness
(8)Fog Lamp Wiring Harness
Figure 2:

Engine Compartment Harness
Object Number: 1553826 Size: MF
(1)Windshield Wiper Motor Connector
(2)Engine Control ModuleConnector
(3)LH Front Wheel Speed Sensor Connector
(4)LH Turn Signal and Park Lamp Connector
(5)LH Marker Lamp Connector
(6)LH Headlamp Connector
(7)Front Body Harness to Fog Lamp Harness Connector
(8)LF Fog Lamp Connector
(9)Fog Lamp Harness to Front Body Harness Connector
(10)LH Horn Connector
(11)A/C Pressure Sensor Connector
(12)Front Body Harness to Powertrain Harness Connector
(13)Engine Cooling Fans Connector
(14)Hood Theft Deterrent Connector
(15)RH Horn Connector
(16)Daytime Running Lamp Resistor Connector
(17)RH Fog Lamp Connector
(18)Windshield Washer Motor Connector
(19)RH Headlamp Connector
(20)RH Marker Lamp Connector
(21)RH Turn Signal and Park Lamp Connector
(22)Fusible Link Supply Connector
(23)Ground Connector Splice Pack 102
(24)Front Body Harness to Battery Wiring Harness Connector
(25)ABS Bracket Connector
(26)Engine Wiring Harness Junction Connector
(27)RH Front Wheel Speed Sensor Connector
(28)EBCM Connector
Figure 3:

Engine Control Module Harness
Object Number: 1553869 Size: MF
(1)Engine Control Module
(2)Engine Control Module C1
(3)Engine Control Module C2
(4)Engine Control Module C3
(5)Theft Deterrent Horn Connector
(6)Theft Deterrent Horn
Figure 4:

Engine Sensor Locations
Object Number: 1252431 Size: MF
(1)Manifold Absolute Pressure (MAP) Sensor Connector
(2)A/C Pressure Sensor Connector
(3)Intake Air Temperature Sensor Connector
Figure 5:

Radiator Support Harness
Object Number: 1252461 Size: MF
(1)Condenser and Ambient Sensor
(2)Ambient Air Temperature Sensor Connector
(3)Hood Theft Deterrent Connector
(4)Engine Cooling Fan Connector
Figure 6:

Cooling Fan Harness
Object Number: 1252515 Size: MF
(1)Theft Deterrent Hood Connectors
(2)Engine Main Wiring Harness to Engine Cooling Fan Connector
(3)Ambient Air Temperature Sensor Connector
(4)Anti-Theft Hood Switch
Figure 7:

Front Lamp Harness
Object Number: 1255498 Size: MF
(1)Turn Signal Connector
(2)Headlamp Connector
(3)Front Wheel Speed Connector
(4)Front Fog Lamp
(5)Front Fog Lamp Connector
(6)Horn Connectors
Figure 8:

Rear Engine/Transmission Harness
Object Number: 1553941 Size: MF
(1)Left Rear Heated Oxygen Sensor Connector
(2)Park/Neutral and Backup Switch Connector
(3)Left Rear Heated Oxygen Sensor Connector
(4)Left Rear Heated Oxygen Sensor Connector
Figure 9:

Engine Sensors
Object Number: 1553989 Size: LF
(1)A/C Clutch Connector
(2)Powertrain Harness to Engine Ground
(3)Electronic Ignition Control Connector
(4)Fuel Injector Connector
(5)Suppression Diode A/C Compressor Connector
(6)MAP Sensor Connector
(7)Throttle Body Connector
(8)Canister Purge Solenoid Valve Connector
Figure 10:

Engine Sensors
Object Number: 1262685 Size: MF
(1)Knock Sensor Connector
(2)Powertrain Harness Ground
(3)Park/Neutral Position Switch Connector
(4)PRNDL Switch Connector
Figure 11:

Engine Harness
Object Number: 1554241 Size: MF
(1)Speed Sensor Connector
(2)Left Rear Heated Oxygen Sensor Connector
(3)Skip Shift Solenoid Connector
(4)Knock Sensor Connector
(5)Reverse Lockout Solenoid Connector
(6)Left Front Heated Oxygen Sensor Connector
Figure 12:

Fuel Injectors
Object Number: 1263412 Size: MF
(1)Suppression Diode A/C Compressor Connector
(2)Electronic Ignition Control Module Connector
(3)Fuel Injector Connector
(4)Powertrain Harness Ground
(5)Powertrain Harness Assembly
(6)A/C Clutch Connector
Figure 13:

Instrument Panel Main Harness
Object Number: 1554482 Size: MF
(1)Front Harness to Powetrain Harness Connector
(2)Automatic Headlamp Control Switch Connector
(3)Engine Control Diode, Crank Connector
(4)Engine Control Diode, Lock Connector
(5)Front Upper Speaker Dash Connector
(6)Fuel Filler Door Release Connector
(7)Powertrain Interface Module Connector
(8)Data Link Connector
(9)Instrument Panel Cluster Connector
(10)Front Body Harness to Clutch Extension Harness Connector
(11)Stepwell Lamp Connector
(12)Stop Lamp , Traction and Cruise Control Release Switch Connector
(13)Trip Odometer Reset Switch Connector
(14)Accelerator Pedal Position Sensor Connector
(15)Radio Connector
(16)HVAC Control Module Connector C1
(17)Ambient Light Sensor Connector
(18)Hazard Lamp Switch Connector
(19)HVAC Control Module Connector C2
(20)Auxiliary Gauges Connector
(21)Front Cigar Lighter Connector
(22)Inline to Radio and Mobile Telephone Connector
(23)Trunk Release Switch Connector
(24)Front Body Harness to Blower Motor Harness Connector
(25)Blower Motor Resistor Connector
(26)Front Body Harness to Passenger Airbag Harness Connector
(27)Instrument Panel Compartment Lamp Connector
(28)Front Upper Speaker Dash Connector
(29)Front Body Harness to Body Wiring Harness Connector
(30)Front Body Harness to Body Wiring Harness Connector
(31)Body Control Module Connector C1
(32)Body Control Module Connector C2
(33)Body Control Module Connector C3
(34)Instrument Panel Compartment Lamp Switch Connector
(35)Stepwell Lamp Connector
(36)Radio Ground Terminal
(37)Front Body Harness to Body Wiring Harness Connector
(38)Front Body Harness to Console Wiring Harness Connector
(39)Front Body Harness to Transmission Selector Harness Connector
(40)Stop Lamp , Traction and Cruise Control Release Switch Connector
(41)Stop Lamp , Traction and Cruise Control Release Switch Connector
(42)Cruise Control Switch Connector
(43)Ignition Lock Cylinder Bulb Connector
(44)Ignition and Start Switch Connector
(45)Windshield Wiper Dwell Module Connector
(46)Steering Wheel Airbag Module Connector
(47)Turn Signal and Headlamp Switch Connector
(48)Winshield Wiper and Washer Switch Connector
(49)Ignition and Start Switch Terminal
(50)Ignition and Start Switch Connector
(51)Ignition Solenoid Connector
(52)Clutch Pedal Position Switch Connector
Figure 14:

BCM Connectors
Object Number: 1264152 Size: MF
(1)Body Control Module (BCM) Connector
(2)Body Control Module (BCM) Connector
(3)Body Control Module (BCM) Connector
(4)Body Control Module (BCM) Connector
(5)Engine Main Harness to Body Harness Connector
(6)Body Harness Connector to Engine Main Harness
(7)Body Control Module (BCM)
Figure 15:

Steering Column Harness
Object Number: 1264648 Size: MF
(1)Winshield Wiper/Washer Switch Connector
(2)Turn Signal C1 and C2 Connector
(3)Ignition Lock Cylinder Bulb Connector
(4)Ignition and Start Switch Connector
(5)Ignition and Start Switch Terminal
(6)Ignition and Start Switch Connector
(7)Data Link Connector
(8)Stepwell Lamp Connector
(9)Windshield Wiper Module Connector
(10)Cruise Control Switch
(11)SIR Coil Connector
(12)Steering Wheel Inflatable restraint Module Connector
(13)Steering Wheel Horn Connector
(14)Radio Control Switch Connector
Figure 16:

Center Console Connectors
Object Number: 1265563 Size: MF
(1)Body Harness to Transmission Selector Harness
(2)Front Cigar Lighter Connector
(3)Cellular Phone Connector
(4)Radio Ground
(5)Parking Brake Switch Connector
(6)Master Window Switch Connector
Figure 17:

Cigar Lighter Connector
Object Number: 1269529 Size: MF
(1)Accessory Power Connector
(2)Center Console Harness to Body Harness
(3)Rear Cigar Lighter Connector
(4)Front Cigar Lighter Connector
Figure 18:

Shifter Connectors
Object Number: 1269761 Size: MF
(1)Automatic Transmission Shift Lock Park Terminal Connector
(2)Automatic Transmission Shift Lock Park Terminal Connector
(3)Electronic Traction Control Switch
(4)Electronic Traction Control Switch Connector (Manual Trans)
(5)PRNDL Selector
(6)Automatic Transmission Shift Program Connector
(7)Transmission Selector Harness to Engine Main Harness Connector
(8)Engine Main Harness Connector to Transmission Selector Harness
(9)Electronic Traction Control Switch Connector (Automatic Transmission)
(10)Automatic Transmission Control Position Indicator Lamp Connector
Figure 19:

Kick Panel Wire Harness
Object Number: 1270136 Size: MF
(1)Body Wiring Harness
(2)Front Side Turn Lamp Connector
(3)Body Wiring Harness to Main Wiring Harness Connector
(4)Body Control Module Connector
(5)Radio Power Antenna Amplifier Connector
(6)Front Side Turn Lamp Connector
(7)Body Wiring Harness to Engine Main Wiring Harness
(8)Body Wiring Harness to Side Air Bag Harness
(9)Seat Belt Connector
Figure 20:

Underhood Lamp Components
Object Number: 1270142 Size: MF
(1)Underhood Lamp Wiring Harness
(2)Underhood Lamp Connector
(3)Underhood Lamp Connector
Figure 21:

Fuel Filler Door Components
Object Number: 1554894 Size: MF
(1)Fuel Tank Filler Door Lock Connector
(1)Fuel Tank Filler Door Lock Actuator
Figure 22:

Engine Splice Locations
Object Number: 1555715 Size: LF
(1)LH Engine Ignition Module Connector
(2)S138
(3)S109
(4)S110
(5)S137
(6)RH Engine Ignition Module Connector
(7)S134
(8)S130
(9)S128
(10)S246
(11)S129
(12)Engine Oil Pressure Sensor
Figure 23:

RH I/P Splice Locations
Object Number: 1555742 Size: LF
(1)S281
(2)S235
(3)S256
(4)S297
(5)S262
(6)BCM
(7)Front Body Harness to Body Harness Connector
(8)Front Body Harness to Body Harness Connector
(9)S263
(10)S278
(11)S275
(12)S161
(13)S315
(14)S257
(15)S296
(16)S277
(17)S269
(18)S918
(19)S270
(20)S271
(21)S218
(22)S211
(23)Inline to Radio and Mobile Phone Connector
(24)Radio Connector
(25)S209
(26)S203
(27)S208
(28)S236
Figure 24:

Center I/P Splice Locations
Object Number: 1556007 Size: LF
(1)S250
(2)S255
(3)Blower Motor Resistor Connector
(4)Front Body to Blower Motor Harness Connector
(5)HVAC Module Connector
(6)S249
(7)S230
(8)S253
(9)S277
(10)S205
(11)S217
(12)S210
Figure 25:

LH I/P Splice Locations
Object Number: 1556025 Size: LF
(1)S207
(2)S244
(3)S243
(4)S294
(5)I/P Cluster
(6)S293
(7)S294
(8)Courtesy Lamp Connector
(9)Ignition Lock Cylinder Bulb Connector
(10)Ignition Start Switch Connector
(11)S202
(12)S237
(13)S206
(14)S291
(15)S307
(16)S105
(17)S213
(18)S289
(19)S290
(20)S272
(21)S215
(22)S278
Figure 26:

RH Underhood Splice Locations
Object Number: 1556031 Size: LF
(1)S150
(2)S121
(3)S261
(4)S111
(5)Ground Connector
(6)S903
(7)S151
(8)EBCM Connector
(9)Underhood Fuse Block
(10)S114
(11)S100
(12)S102
Figure 27:

Front Engine Compartment Splice Locations
Object Number: 1556034 Size: LF
(1)S108
(2)S231
(3)S165
(4)Cooling Fan Connector
(5)Cooling Fan Connector
Figure 28:

RH Front Engine Compartment
Object Number: 1556271 Size: LF
(1)S123
(2)S156
(3)S274
(4)S233
(5)Body Ground Connector
(6)S228
(7)S232
(8)S107
(9)S314
Figure 29:

RH Body Harness
Object Number: 1556333 Size: LF
(1)Body to Front Body Harness Connector
(2)S259
(3)S299
(4)S283
(5)S214
(6)S296
(7)S282
(8)S925
(9)Radio RH Rear Speaker Connector
(10)Fuel Tank Filler Door Lock Connector
(11)S304
(12)S917
(13)S268
(14)S162
(15)S156
(16)S295
(17)S317
(18)S265
(19)S106
(20)S273
(21)S905
(22)S311
(23)S310
(24)S200
(25)S502
(26)S309
(27)S308
(28)S264
(29)Body to Front Body Harness Connector
Figure 30:

Floor Harness
Object Number: 1556381 Size: LF
(1)S225
(2)S503
(3)S504
(4)Body to Power Seat Harness Connector
(5)Body to Power Seat Harness Connector
(6)S298
(7)Body to Front Door Wiring Harness Connector
(8)S258
Figure 31:

Trunk Harness
Object Number: 1556425 Size: LF
(1)S290
(2)S919
(3)S916
(4)Body to Tail Lamp Harness Connector
(5)S921
(6)Voltage Drop Connector
(7)S903
(8)S267
Figure 32:

Center Console
Object Number: 1556443 Size: MF
(1)Accessory Power Connector
(2)Center Console To Front Body Harness Connector
(3)S241
Figure 33:

Door Harness
Object Number: 1556464 Size: MF
(1)S221
(2)Body to Front Door Harness Connector
(3)S500
(4)Window Regulator Connector
(5)S501
(6)Door Lock Switch Connector
Figure 34:

Dome Lamp Harness
Object Number: 1556513 Size: MF
(1)Dome Lamp Connector
(2)S222
(3)S315
Figure 35:

Fog Lamp Harness
Object Number: 1556516 Size: MF
(1)LH Fog Lamp Connector
(2)S153
(3)Fog Lamp Harness to Front Body Harness Connector
(4)S151
(5)S131