GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2007 🢒 Montana SV6 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T65-E 🢒 Harness Routing Views
Figure 1:

Forward Lamp Harness Components
Object Number: 1512951 Size: LF
(1)C103 Forward Lamp Harness to LH Headlamp
(2)S101
(3)G101
(4)C110 Forward Lamp Harness to Cooling Fan Jumper Harness
(5)G100
(6)S102
(7)S104
(8)S100
(9)C104 Forward Lamp Harness to RH Headlamp
(10)S106
(11)Fuse Block - Underhood C3
(12)C120 I/P Harness to Forward Lamp Harness
(13)C126 I/P Harness to Forward Lamp Harness
(14)S103
Figure 2:

Right Side of Engine Compartment
Object Number: 1546083 Size: LF
(1)Battery
(2)C108 I/P Harness to Battery Cable Harness
(3)Rear Window Washer Fluid Pump Relay
(4)I/P Harness
Figure 3:

Engine Harness Components
Object Number: 1512640 Size: LF
(1)Upper Dash Panel
(2)S175
(3)C101 I/P Harness to Engine Harness
(4)Electronic Brake Control Module (EBCM) Connector
(5)S155
(6)C175 Engine Harness to Transmission Harness
(7)G113
(8)S135
(9)G115
(10)C102 Engine Harness to Fuel Injector Harness
(11)Fuse Block - Underhood C1
Figure 4:

Fuel Rail (LGD/LZ9)
Object Number: 1700526 Size: MF
(1)Fuel Injector 1
(2)Fuel Injector 3
(3)Fuel Injector 5
(4)Fuel Injector 6
(5)Engine Coolant Temperature (ECT) Sensor
(6)S142
(7)Fuel Injector 4
(8)Fuel Injector 2
(9)Crankshaft Position (CKP) Sensor
(10)C102
Figure 5:

Antenna Components
Object Number: 1542521 Size: LF
(1)Cellular, Navigational and Digital Radio Antenna (UE1 & U2K)
(2)Digital Radio Receiver
(3)Vehicle Communication Unit (VCU) (UE1)
(4)C304 Cellular, Navigational and Digital Radio Antenna Coax Connector (UE1 & U2K)
(5)Radio
(6)C298 Radio Antenna Coax Connector
(7)Radio Antenna
Figure 6:

Left Side of I/P
Object Number: 1511806 Size: LF
(1)G201
(2)C201 Steering Column Harness to I/P Harness
(3)Body Control Module (BCM) C1
(4)Splice Pack SP205
(5)C203 Body Harness to I/P Harness
Figure 7:

Right Side of I/P
Object Number: 1511849 Size: LF
(1)Fuse Block - I/P C1
(2)Fuse Block - I/P C2
(3)G200
(4)C204 Body Harness to I/P Harness
(5)C200 Body Harness to I/P Harness
Figure 8:

Right Side of I/P Components
Object Number: 1536068 Size: LF
(1)G200
(2)Blower Motor
(3)Blower Motor Resistor Assembly
(4)Recirculation Actuator
(5)Inflatable Restraint I/P Module
(6)Fuse Block - I/P
(7)Evaporative Temperature Sensor
(8)C205 I/P Harness to HVAC Jumper Harness (CJ3) (Air Temperature Actuator - Right)
Figure 9:

I/P Harness Splice Locations
Object Number: 1512285 Size: LF
(1)S257
(2)S273
(3)S259
(4)S255
(5)S253
(6)S251
(7)S246
(8)S202
(9)S200
(10)S204
(11)S206
(12)S271
Figure 10:

Steering Column Components
Object Number: 1517022 Size: LF
(1)Turn Signal/Multifunction Switch C3
(2)C279 Inflatable Restraint Steering Wheel Module Coil to Steering Wheel Harness
(3)Inflatable Restraint Steering Wheel Module Coil C1 Connector
(4)Inflatable Restraint Steering Wheel Module Coil C2 Connector
(5)Turn Signal/Multifunction Switch C2
(6)Turn Signal/Multifunction Switch C1
(7)Rear Wiper/Washer Switch
(8)Turn Signal/Multifunction Switch
(9)Turn Signal/Multifunction Switch C4
(10)S277 and S279
(11)C277 Inflatable Restraint Steering Wheel Module Coil to Steering Column Harness
(12)C275 Inflatable Restraint Steering Wheel Module Coil to Body Harness
(13)C201 Steering Column Harness to I/P Harness
(14)Steering Wheel Speed Position Sensor (JL4)
(15)Theft Deterrent Exciter Module Connector (Pigtail)
(16)Inflatable Restraint Steering Wheel Module Coil
(17)Theft Deterrent Exciter Module
(18)Ignition Switch
(19)A/T Shift Lock Control Solenoid Connector
Figure 11:

Steering Wheel Components
Object Number: 1517025 Size: LF
(1)Horn Switch Connector
(2)Cruise Control Lever Connector (K34)
(3)Steering Wheel Control Switch Assembly - Right (UK3)
(4)Cruise Control Lever (K34)
(5)S293 (UK3)
(6)S297 (UK3)
(7)Steering Wheel Ground
(8)C279 Inflatable Restraint Steering Wheel Module Coil to Steering Wheel Harness
(9)S295 (UK3)
(10)Steering Wheel Control Switch Assembly - Left (UK3)
Figure 12:

Driver Door Harness Components
Object Number: 1511102 Size: LF
(1)Outside Rearview Mirror Switch - Left Connector
(2)Window Switch - Driver Connector
(3)Door Lock Switch - Driver Connector
(4)Outside Rearview Mirror - Driver
(5)C301 Driver Door Harness to Body Harness
(6)Window Motor - Driver
(7)Speaker - LF
(8)S555
(9)Memory Seat Switch - Driver (AG0) Connector
(10)S551
(11)Driver Door Key Switch Connector
(12)Door Latch Assembly - Driver
(13)Driver Door Key Switch (AU6)
Figure 13:

Passenger Door Harness Components
Object Number: 1511010 Size: LF
(1)Door Lock Switch - Passenger Connector
(2)Window Switch - Passenger Connector
(3)Door Latch Assembly - Passenger
(4)S660
(5)S666
(6)Window Motor - Passenger
(7)C302 Passenger Door Harness to Body Harness
(8)Outside Rearview Mirror - Passenger
Figure 14:

Body Harness Components 1 of 3
Object Number: 1511325 Size: LF
(1)C301 Driver Door Harness to Body Harness
(2)C203 Body Harness to I/P Harness
(3)Body Control Module (BCM) C2
(4)Park Brake Switch
(5)Inflatable Restraint Steering Wheel Module Coil C1
(6)C200 Body Harness to I/P Harness
(7)C254 Inflatable Restraint I/P Module Jumper Harness to Body Harness
(8)C302 Passenger Door Harness to Body Harness
(9)C204 Body Harness to I/P Harness
(10)S306 (Y3G or Y3H)
(11)C314 Body Harness to Passenger Seat Harness
(12)Door Contact Plate - Right C1
(13)G302
(14)C308 Body Harness to Headliner Harness
(15)C313 Body Harness to Driver Seat Harness
(16)C305 Fuel Tank Harness and Rear Cross-Car Jumper Harness to Body Harness
(17)Door Contact Plate - Left C1
(18)G301
(19)Sliding Door Open/Close Switch - Left (E59) Connector
(20)Digital Video Disc (DVD) Player C1 (U56)
Figure 15:

Body Harness Components 2 of 3
Object Number: 1511496 Size: LF
(1)C479 Body Harness to Tail Lamp Harness
(2)G401
(3)C405 Body Harness to Automatic Level Control Jumper Harness (G67)
(4)Auxiliary HVAC Connectors
(5)Sliding Door Jamb Switch - Right
(6)Rear Object Sensor Control Module (UD7)
(7)Rear Parking Assist (RPA) Diagnostic Connector (UD7)
(8)Right Sliding Door Module (RSDM) (E58)
(9)C440 RPA Harness (UD7) to Body Harness
(10)C426 Body Harness to Accessory Power Outlet Jumper Harness (KC7)
(11)C480 Body Harness to Right Tail Lamp Harness
(12)G400
(13)C420 RPA Display Jumper Harness (UD7) to Body Harness
(14)C400 Liftgate Harness to Body Harness
(15)C402 Liftgate Harness to Body Harness
Figure 16:

Body Harness Components 3 of 3 (Splice Locations)
Object Number: 1511785 Size: LF
(1)S413
(2)S415
(3)S411 (E59)
(4)S331 (E59)
(5)S339
(6)S335
(7)S333
(8)S331 (w/o E59)
(9)S315
(10)S317
(11)S313
(12)S311
(13)S300
(14)S302
(15)S304
(16)S320 (w/o E58)
(17)S320 (E58)
(18)S400
(19)S402
(20)S404
Figure 17:

Left Sliding Door Harness Components
Object Number: 1510564 Size: LF
(1)Left Sliding Door Module (LSDM) (E59)
(2)Sliding Door Motor Assembly - Left (E59)
(3)Sliding Door Unlatch Actuator - Left (E59)
(4)Door Lock Actuator - Left Middle
(5)Door Contact Plate - Left C2
(6)S751 (E59)
(7)Sliding Door Detent Switch - Left (E59) Connector
(8)Sliding Door Cable Motor - Left (E59)
Figure 18:

Right Sliding Door Harness Components
Object Number: 1515646 Size: LF
(1)Sliding Door Cable Motor - Right (E58)
(2)Sliding Door Motor Assembly - Right (E58)
(3)Right Sliding Door Module (RSDM) (E58)
(4)Sliding Door Detent Switch - Right (E58) Connector
(5)Door Contact Plate - Right C2
(6)Door Lock Actuator - Right Middle
(7)Sliding Door Unlatch Actuator - Right (E58)
(8)S848 (E58)
Figure 19:

Headliner Harness Components 1 of 2
Object Number: 1510542 Size: LF
(1)Vanity Mirror Lamp - Left (DH6) Connector
(2)Vanity Mirror Lamp - Right (DH6) Connector
(3)S388
(4)S386
(5)S384
(6)S382
(7)Onstar Button Assembly (UE1)
(8)S380
(9)Cellular Microphone (UE1)
(10)Courtesy/Reading Lamp - Center Connector
(11)Multifunction Overhead Console Switch C2
(12)Multifunction Overhead Console Switch C1
(13)Garage Door Opener (UG1)
(14)Courtesy/Reading Lamp - Front Connector
Figure 20:

Headliner Harness Components 2 of 2
Object Number: 1510513 Size: LF
(1)Right B-Pillar
(2)Sliding Door Open/Close Switch - Right (E58) Connector
(3)C308 Body Harness to Headliner Harness
(4)G302
(5)Courtesy/Reading Lamp - Center
(6)Cargo Lamp
Figure 21:

Left B Pillar Area Components - Body Harness
Object Number: 1536071 Size: LF
(1)G301
(2)Sliding Door Open/Close Switch - Left (E59) Connector
(3)Inflatable Restraint Side Impact Module - Left (AJ7 or AW9)
(4)Inflatable Restraint Side Impact Sensing Module (SISM) - Left (AJ7 or AW9)
(5)Body Harness
(6)C315 Left Side Impact Module Jumper Harness (AJ7 or AW9) to Body Harness (AJ7 or AW9)
(7)C305 Fuel Tank Harness and Rear Cross-Car Jumper Harness to Body Harness
(8)Seatbelt Pretensioner - LF
(9)Door Contact Plate - Left C1
Figure 22:

Right B Pillar Area Components - Body Harness
Object Number: 1536097 Size: LF
(1)Inflatable Restraint Side Impact Sensing Module (SISM) - Right (AJ7 or AW9)
(2)G302
(3)Door Contact Plate - Right C1
(4)Seatbelt Pretensioner - RF
(5)Inflatable Restraint Sensing and Diagnostic Module (SDM)
(6)Body Harness
(7)C316 Right Side Impact Module Jumper Harness (AJ7 or AW9) to the Body Harness (AJ7 or AW9)
(8)Inflatable Restraint Passenger Seat Belt Tension Retractor Sensor
(9)Inflatable Restraint Side Impact Module - Right (AJ7 or AW9)
Figure 23:

Fuel Tank Components (SWB)
Object Number: 1536304 Size: LF
(1)Evaporative Emission (EVAP) Canister
(2)Evaporative Emission (EVAP) Canister Vent Solenoid Valve
(3)Fuel Tank
(4)Fuel Pump and Sender Assembly
(5)Fuel Tank Pressure (FTP) Sensor
(6)C305 Fuel Tank Harness to Body Harness
(7)S371
Figure 24:

Fuel Tank Components (LWB)
Object Number: 1536295 Size: LF
(1)Fuel Tank
(2)Evaporative Emission (EVAP) Canister
(3)Evaporative Emission (EVAP) Canister Vent Solenoid Valve
(4)Fuel Tank Pressure (FTP) Sensor
(5)Fuel Pump and Sender Assembly
(6)C305 Fuel Tank Harness to Body Harness
(7)S371
Figure 25:

Left Rear Frame and Underbody
Object Number: 1510497 Size: LF
(1)Automatic Level Control (ALC) Solenoid Valve (G67 w/o Z10)
(2)Automatic Level Control (ALC) Inflator Air Switch (G67 w/o Z10)
(3)C405 Body Harness to Automatic Level Control (ALC) Jumper Harness (G67)
(4)S431 (G67)
(5)S433 (G67)
(6)Automatic Level Control (ALC) Compressor Connector (G67)
(7)Automatic Level Control (ALC) Compressor (G67)
(8)Automatic Level Control (ALC) Sensor (G67)
(9)C409 ALC Jumper Harness (G67) to Trailer Harness (V92)
(10)Left Rear Cargo Trim Panel
Figure 26:

Twist Axle - Rear (FWD)
Object Number: 1536224 Size: LF
(1)C306 RR Wheel Speed Sensor Harness to Rear Cross-Car Jumper Harness
(2)Automatic Level Control (ALC) Sensor (G67)
(3)Automatic Level Control (ALC) Compressor (G67)
(4)C309 LR Wheel Speed Sensor Harness to Rear Cross-Car Jumper Harness
(5)Left Rear Hub
(6)Wheel Speed Sensor (WSS) - LR
Figure 27:

Liftgate Harness Components
Object Number: 1700960 Size: LF
(1)C402 Liftgate Harness to Body Harness
(2)C400 Liftgate Harness to Body Harness
(3)Center High Mounted Stop Lamp (CHMSL) Connector
(4)Rear Window Wiper Motor
(5)Rear Window Defogger Grid C2
(6)Speaker - LR
(7)License Lamps
(8)S911
(9)Door Lock Actuator - Liftgate
(10)Door Jamb Switch - Liftgate
(11)S900
(12)Speaker - RR
(13)Rear Window Defogger Grid C1
(14)S915
(15)S913
(16)Rear Window Defogger Grid
Figure 28:

Rear Lower Bumper (RPA Harness) (UD7)
Object Number: 1547042 Size: LF
(1)C440 Rear Parking Assist (RPA) Harness to Body Harness
(2)Object Sensors
(3)S482
(4)S480