GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2008 🢒 Montana SV6 🢒 Power and Signal Distribution 🢒 Wiring Systems and Power Management 🢒 Harness Routing Views
Figure 1:

Forward Lamp Harness Components
Object Number: 1512951 Size: LF
(1)X103 Forward Lamp Harness to Left Headlamp
(2)J101
(3)G101
(4)X110 Forward Lamp Harness to Cooling Fan Jumper Harness
(5)G100
(6)J102
(7)J104
(8)J100
(9)X104 Forward Lamp Harness to Right Headlamp
(10)J106
(11)Fuse Block - Underhood X3
(12)X120 Instrument Panel Harness to Forward Lamp Harness
(13)X126 Instrument Panel Harness to Forward Lamp Harness
(14)J103
Figure 2:

Right Side of Engine Compartment
Object Number: 1546083 Size: LF
(1)Battery
(2)X108 Instrument Panel Harness to Battery Cable Harness
(3)Rear Window Washer Fluid Pump Relay
(4)Instrument Panel Harness
Figure 3:

Engine Harness Components
Object Number: 1512640 Size: LF
(1)Upper Dash Panel
(2)J175
(3)X101 Instrument Panel Harness to Engine Harness
(4)Electronic Brake Control Module (EBCM) Connector
(5)J155
(6)X175 Engine Harness to Transmission Harness
(7)G113
(8)J135
(9)G115
(10)X102 Engine Harness to Fuel Injector Harness
(11)Fuse Block - Underhood X1
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)J142
(7)Fuel Injector 4
(8)Fuel Injector 2
(9)Crankshaft Position (CKP) Sensor
(10)X102
Figure 5:

Antenna Components
Object Number: 1542521 Size: LF
(1)Cellular, Navigational, and Digital Radio Antenna (UE1/U2K)
(2)Digital Radio Receiver (U2K)
(3)Vehicle Communication Unit (VCU) (UE1)
(4)X300 Digital Radio Antenna Coax Connector (U2K)
(5)Radio
(6)X298 Radio Antenna Coax Connector
(7)Radio Antenna
Figure 6:

Left Side of I/P
Object Number: 1511806 Size: LF
(1)G201
(2)X201 Steering Column Harness to Instrument Panel Harness
(3)Body Control Module (BCM) X1
(4)JX205
(5)X203 Body Harness to Instrument Panel Harness
Figure 7:

Right Side of I/P
Object Number: 1511849 Size: LF
(1)Fuse Block - Instrument Panel X1
(2)Fuse Block - Instrument Panel X2
(3)G200
(4)X204 Body Harness to Instrument Panel Harness
(5)X200 Body Harness to Instrument Panel 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 Instrument Panel Module
(6)Fuse Block - Instrument Panel
(7)Evaporative Temperature Sensor
(8)X205 Instrument Panel Harness to HVAC Jumper Harness (CJ3) (Air Temperature Actuator - Right)
Figure 9:

I/P Harness Splice Locations
Object Number: 1512285 Size: LF
(1)J257
(2)J273
(3)J259
(4)J255
(5)J253
(6)J251
(7)J246
(8)J202
(9)J200
(10)J204
(11)J206
(12)J271
Figure 10:

Steering Column Components
Object Number: 1517022 Size: LF
(1)Turn Signal/Multifunction Switch X3
(2)X279 Inflatable Restraint Steering Wheel Module Coil to Steering Wheel Harness
(3)Inflatable Restraint Steering Wheel Module Coil X1 Connector
(4)Inflatable Restraint Steering Wheel Module Coil X2 Connector
(5)Turn Signal/Multifunction Switch X2
(6)Turn Signal/Multifunction Switch X1
(7)Rear Wiper/Washer Switch
(8)Turn Signal/Multifunction Switch
(9)Turn Signal/Multifunction Switch X4
(10)J277 and J279
(11)X277 Inflatable Restraint Steering Wheel Module Coil to Steering Column Harness
(12)X275 Inflatable Restraint Steering Wheel Module Coil to Body Harness
(13)X201 Steering Column Harness to Instrument Panel Harness
(14)Steering Wheel Speed/Position Sensor (JL4)
(15)Theft Deterrent Module (TDM) Connector (Pigtail)
(16)Inflatable Restraint Steering Wheel Module Coil
(17)Theft Deterrent Module (TDM)
(18)Ignition Switch
(19)Automatic Transmission Shift Lock Control Solenoid Connector
Figure 11:

Steering Wheel Components
Object Number: 1517025 Size: LF
(1)Horn Switch Connector
(2)Cruise Control Switch Connector (K34)
(3)Steering Wheel Control Switch - Right (UK3)
(4)Cruise Control Switch (K34)
(5)J293 (UK3)
(6)J297 (UK3)
(7)Steering Wheel Ground
(8)X279 Inflatable Restraint Steering Wheel Module Coil to Steering Wheel Harness
(9)J295 (UK3)
(10)Steering Wheel Control Switch - Left (UK3)
Figure 12:

Driver Door Harness Components
Object Number: 2028656 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)X301 Driver Door Harness to Body Harness
(6)Window Motor - Driver
(7)Speaker - Left Front
(8)J555
(9)J551
(10)Door Lock Cylinder Key Switch Connector
(11)Door Latch - Driver
(12)Door Lock Cylinder Key Switch - Driver (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 - Passenger
(4)J660
(5)J666
(6)Window Motor - Passenger
(7)X302 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)X301 Driver Door Harness to Body Harness
(2)X203 Body Harness to Instrument Panel Harness
(3)Body Control Module (BCM) X2
(4)Park Brake Switch
(5)Inflatable Restraint Steering Wheel Module Coil X1
(6)X200 Body Harness to Instrument Panel Harness
(7)X254 Inflatable Restraint Instrument Panel Module Jumper Harness to Body Harness
(8)X302 Passenger Door Harness to Body Harness
(9)X204 Body Harness to Instrument Panel Harness
(10)J306 (Y3G or Y3H)
(11)X314 Body Harness to Passenger Seat Harness
(12)Sliding Door Jamb Contact Plate - Right X1
(13)G302
(14)X308 Body Harness to Headliner Harness
(15)X313 Body Harness to Driver Seat Harness
(16)X305 Fuel Tank Harness and Rear Cross-Car Jumper Harness to Body Harness
(17)Sliding Door Jamb Contact Plate - Left X1
(18)G301
(19)Sliding Door Open/Close Switch - Left (E59) Connector
(20)Digital Video Disc (DVD) Player X1 (U56)
Figure 15:

Body Harness Components 2 of 3
Object Number: 1511496 Size: LF
(1)X479 Body Harness to Tail Lamp Harness
(2)G401
(3)X405 Body Harness to Automatic Level Control Jumper Harness (G67)
(4)Auxiliary HVAC Connectors
(5)Door Jamb Switch - Right Rear
(6)Rear Object Sensor Control Module (UD7)
(7)Rear Parking Assist (RPA) Diagnostic Connector (UD7)
(8)Sliding Door Actuator Control Module - Right (E58)
(9)X440 RPA Harness (UD7) to Body Harness
(10)X426 Body Harness to Accessory Power Outlet Jumper Harness (KC7)
(11)X480 Body Harness to Right Tail Lamp Harness
(12)G400
(13)X420 RPA Display Jumper Harness (UD7) to Body Harness
(14)X400 Liftgate Harness to Body Harness
(15)X402 Liftgate Harness to Body Harness
Figure 16:

Body Harness Components 3 of 3 (Splice Locations)
Object Number: 1511785 Size: LF
(1)J413
(2)J415
(3)J411 (E59)
(4)J331 (E59)
(5)J339
(6)J335
(7)J333
(8)J331 (without E59)
(9)J315
(10)J317
(11)J313
(12)J311
(13)J300
(14)J302
(15)J304
(16)J320 (without E58)
(17)J320 (E58)
(18)J400
(19)J402
(20)J404
Figure 17:

Left Sliding Door Harness Components
Object Number: 1510564 Size: LF
(1)Sliding Door Actuator Control Module - Left (E59)
(2)Sliding Door Motor Assembly - Left (E59)
(3)Sliding Door Unlatch Actuator - Left (E59)
(4)Door Lock Actuator - Left Rear
(5)Sliding Door Jamb Contact Plate - Left X2
(6)J751 (E59)
(7)Sliding Door Detent Switch - Left (E59) Connector
(8)Sliding Door Motor - Left (E59)
Figure 18:

Right Sliding Door Harness Components
Object Number: 1515646 Size: LF
(1)Sliding Door Motor - Right (E58)
(2)Sliding Door Motor Assembly - Right (E58)
(3)Sliding Door Actuator Control Module - Right (E58)
(4)Sliding Door Detent Switch - Right (E58) Connector
(5)Sliding Door Jamb Contact Plate - Right X2
(6)Door Lock Actuator - Right Rear
(7)Sliding Door Unlatch Actuator - Right (E58)
(8)J848 (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)J388
(4)J386
(5)J384
(6)J382
(7)Onstar Button Assembly (UE1)
(8)J380
(9)Cellular Telephone Microphone (UE1)
(10)Courtesy/Reading Lamp - 2nd Row Connector
(11)Multifunction Switch - Overhead Console X2
(12)Multifunction Switch - Overhead Console X1
(13)Garage Door Opener (UG1)
(14)Overhead Console Courtesy/Reading Lamps 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)X308 Body Harness to Headliner Harness
(4)G302
(5)Courtesy/Reading Lamp - 2nd Row
(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/AW9)
(4)Inflatable Restraint Side Impact Sensor (SIS) - Left (AJ7/AW9)
(5)Body Harness
(6)X315 Left Side Impact Module Jumper Harness (AJ7/AW9) to Body Harness (AJ7/AW9)
(7)X305 Fuel Tank Harness and Rear Cross-Car Jumper Harness to Body Harness
(8)Seatbelt Pretensioner - Driver
(9)Sliding Door jamb Contact Plate - Left X1
Figure 22:

Right B Pillar Area Components - Body Harness
Object Number: 1536097 Size: LF
(1)Inflatable Restraint Side Impact Sensor (SIS) - Right (AJ7/AW9)
(2)G302
(3)Sliding Door Jamb Contact Plate - Right X1
(4)Seatbelt Pretensioner - Passenger
(5)Inflatable Restraint Sensing and Diagnostic Module (SDM)
(6)Body Harness
(7)X316 Right Side Impact Module Jumper Harness (AJ7/AW9) to the Body Harness (AJ7/AW9)
(8)Inflatable Restraint Seat Belt Tension Retractor Sensor - Passenger
(9)Inflatable Restraint Side Impact Module - Right (AJ7/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)X305 Fuel Tank Harness to Body Harness
(7)J371
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)X305 Fuel Tank Harness to Body Harness
(7)J371
Figure 25:

Left Rear Frame and Underbody
Object Number: 1510497 Size: LF
(1)Automatic Level Control (ALC) Solenoid Valve (G67 without Z10)
(2)Inflator Air Switch (G67 without Z10)
(3)X405 Body Harness to Automatic Level Control (ALC) Jumper Harness (G67)
(4)J431 (G67)
(5)J433 (G67)
(6)Automatic Level Control (ALC) Compressor Connector (G67)
(7)Automatic Level Control (ALC) Compressor (G67)
(8)Automatic Level Control (ALC) Sensor (G67)
(9)X409 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)X306 Right Rear 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)X309 Left Rear Wheel Speed Sensor Harness to Rear Cross-Car Jumper Harness
(5)Left Rear Hub
(6)Wheel Speed Sensor (WSS) - Left Rear
Figure 27:

Liftgate Harness Components
Object Number: 1700960 Size: LF
(1)X402 Liftgate Harness to Body Harness
(2)X400 Liftgate Harness to Body Harness
(3)Center High Mounted Stop Lamp (CHMSL) Connector
(4)Rear Window Wiper Motor
(5)Rear Window Defogger Grid X2
(6)Speaker - Left Rear
(7)License Lamps
(8)J911
(9)Door Lock Actuator - Liftgate
(10)Door Jamb Switch - Liftgate
(11)J900
(12)Speaker - Right Rear
(13)Rear Window Defogger Grid X1
(14)J915
(15)J913
(16)Rear Window Defogger Grid
Figure 28:

Rear Lower Bumper (RPA Harness) (UD7)
Object Number: 1547042 Size: LF
(1)X440 Rear Parking Assist (RPA) Harness to Body Harness
(2)Object Alarm Sensors
(3)J482
(4)J480