GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Forward Lamps Harness


Object Number: 2025946  Size: MF
(1)Ground Chassis Fender -- G104 (Jumpstart Negative post)
(2)Horn - Left Connector -- B9
(3)Headlamp Assembly - Left Connector -- E119
(4)Inflatable Restraint Front Sensor (LF) Connector -- B47
(5)FWD Lamps Harness to Hood Ajar Harness -- X105
(6)Windshield Washer Fluid Pump Connector -- M19
(7)Forward Lamp Harness to Cooling Fan Harness Connector -- X162
(8)Forward Lamps to Body Front Wiring Connector 1 -- X107
(9)Inflatable Restraint Front Sensor (RF) Connector -- B47
(10)Horn - Right Connector -- B9
(11)Headlamp Assembly - Right Connector -- E119
(12)Fuse Block - Underhood -- X124
Figure 2:

Front Fog Lamp Wiring


Object Number: 2025981  Size: MF
(1)Left Fog Lamp Connector -- E69
(2)Right Fog Lamp Connector -- E69
(3)Body Front to Front Fascia Wiring Harness Connector -- X108
Figure 3:

Body Front Wiring (3.6L)


Object Number: 2025952  Size: MF
(1) Fuse Block - Underhood -- X124
(2)Body Front Harness to RF Wheel Speed Sensor Connector -- X161
(3)Electronic Brake Control Module (EBCM) Connector -- A38/A116
(4)Brake Fluid Level Switch Connector -- S36
(5)Theft Horn Connector -- B9
(6)Transmission Control Module (TCM) Connector -- A112
(7)Windshield Wiper Motor Connector -- M17
(8)Body Wiring Harness Connector 1 -- X206
(9)Instrument Panel Wiring Harness Connector 3 -- X200
(10)Instrument Panel Wiring Harness Connector 4 -- X204
(11)Instrument Panel Wiring Harness Connector 5 -- X207
(12)Instrument Panel Wiring Harness Connector 1 -- X104
(13)Body Front Harness to LF Wheel Speed Sensor Connector -- X160
(14)Right Chassis Rail Ground -- G102
(15)Engine and Transmission Wiring Harness Connector 2 -- X110
(16)Engine and Transmission Wiring Harness Connector 1 -- X102
(17)Body Front to Front Fascia Wiring Harness Connector -- X108
(18)Front Compartment Wiring Harness Connector 1 -- X106
(19)Right Chassis Rail Ground -- G101
Figure 4:

Body Front Wiring (6.0L)


Object Number: 2025954  Size: MF
(1)Fuse Block - Underhood -- X124
(2)Body Front Harness to RF Wheel Speed Sensor Connector -- X161
(3)Engine and Transmission Wiring Harness Connector 1 -- X102
(4)Electronic Brake Control Module (EBCM) Connector -- A38/A116
(5)Brake Fluid Level Switch Connector -- S36
(6)Theft Horn Connector -- B9
(7)Windshield Wiper Motor Connector -- M17
(8)Body Wiring Harness 1 Connector -- X206
(9)Instrument Panel Wiring Harness Connector 3 -- X200
(10)Instrument Panel Wiring Harness Connector 4 -- X204
(11)Instrument Panel Wiring Harness Connector 5 -- X207
(12)Instrument Panel Wiring Harness Connector 1 -- X104
(13)Instrument Panel Wiring Harness Connector 2 -- X203
(14)Body Front Harness to LF Wheel Speed Sensor Connector -- X160
(15)Right Chassis Rail Ground -- G102
(16)Engine and Transmission Wiring Harness Connector 2 -- X110
(17)Body Front to Front Fascia Wiring Harness Connector -- X108
(18)Front Compartment Wiring Harness Connector 1 -- X106
(19)Engine Control Module Connector 1 -- A43-X1
Figure 5:

Battery Wiring (3.6L)


Object Number: 1964460  Size: MF
(1)Fuse Block - Underhood -- X124
(2)Body Ground -- G103
(3)Engine Block Ground -- G108
(4)Starter Connector -- M15
(5)Jumpstart Positive Stud
(6)Dash Panel Grommet / Stud
(7)Generator Connector -- G8-X2
Figure 6:

Battery Wiring (6.0L)


Object Number: 1964476  Size: MF
(1)Fuse Block - Underhood -- X124
(2)Body Ground -- G103
(3)Engine Block Ground -- G111
(4)Starter Connector -- M15
(5)Jumpstart Positive Stud
(6)Dash Panel Grommet / Stud
(7)Generator Connector -- G8-X2
Figure 7:

Battery Wiring - Ground Points


Object Number: 2025956  Size: MF
(1)Ground Chassis Fender -- G104 (Jumpstart Negative post)
(2)Ground Chassis Rail Right -- G101
(3)Ground Chassis Rail Right -- G102
Figure 8:

Engine and Transmission Harness (3.6L) - 1 of 8


Object Number: 1964463  Size: MF
(1)Camshaft Position (CMP) Exhaust Sensor - 1 (ODD BK) Connector -- B28
(2)Camshaft Position (CMP) Intake Sensor 1 (ODD BK) Connector -- B28
(3)Camshaft Position (CMP) Intake Solenoid - 1 (ODD BK) Connector -- Y4
(4)Camshaft Position (CMP) Exhaust Solenoid - 1(ODD BK) Connector -- Y4
(5)Camshaft Position (CMP) Intake Sensor 2 (EVEN BK) Connector -- B28
(6)Camshaft Position (CMP) Intake Solenoid - 2 (EVEN BK) Connector -- Y4
(7)Camshaft Position (CMP) Exhaust Sensor - 2 (EVEN BK) Connector -- B28
(8)Camshaft Position (CMP) Exhaust Solenoid - 2 (EVEN BK) Connector -- Y4
Figure 9:

Engine and Transmission Harness (3.6L) - 2 of 8


Object Number: 1964464  Size: MF
(1)Ignition Coil 5 Connector -- L3
(2)Ignition Coil 3 Connector -- L3
(3)Ignition Coil 1 Connector -- L3
(4)Engine Block Ground -- G112
(5)Throttle Body Connector -- Y38
Figure 10:

Engine and Transmission Harness (3.6L) - 3 of 8


Object Number: 1964465  Size: MF
(1)Fuse Block Underhood -- X124
(2)Engine Control Module 2 Connector -- A43-X2
(3)Engine Control Module 1 Connector -- A43-X1
(4)Body Front Wiring Connector 3 -- X103
(5)Knock Sensor (KS) Bank 1 Connector -- B65
(6)Crankshaft Position (CKP) Sensor Connector -- B30
Figure 11:

Engine and Transmission Harness (3.6L) - 4 of 8


Object Number: 1964467  Size: MF
(1)Ignition Coil 2 Connector -- L3
(2)Ignition Coil 4 Connector -- L3
(3)Ignition Coil 6 Connector -- L3
(4)Engine Block Ground -- G109
(5)Engine Coolant Temperature (ECT) Sensor Connector -- B39
(6)Engine oil level/temperature sensor connector -- B41
Figure 12:

Engine and Transmission Harness (3.6L) - 5 of 8


Object Number: 1964468  Size: MF
(1)Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 Connector -- B166
(2)A/C Refrigerant Pressure Sensor Connector -- B18
(3)ECVD Solenoid
Figure 13:

Engine and Transmission Harness (3.6L) - 6 of 8


Object Number: 1964469  Size: MF
(1)Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor Connector -- B69
(2)Engine Block Ground -- G106
(3)Generator Connector -- G8-X1
Figure 14:

Engine and Transmission Harness (3.6L) - 7 of 8


Object Number: 1964470  Size: MF
(1)Variable Intake Manifold (VIM) Solenoid Connector -- Y21
(2)Fuel Injector Connector -- X114
(3)Evaporative Emission (EVAP) Canister Purge Solenoid Valve Connector -- Y123
(4)Knock Sensor (KS) Bank 2 Connector -- B65
Figure 15:

Engine and Transmission Harness (3.6L) - 8 of 8


Object Number: 1964472  Size: MF
(1)Engine Oil Pressure (EOP) Sensor Connector -- B42
(2)Starter Connector -- M15
Figure 16:

Engine and Transmission Harness (6.0L) - 1 of 7


Object Number: 1964478  Size: MF
(1)Fuel Injector (Even) Connector -- L2
(2)Camshaft Position (CMP) Sensor Connector -- B28
Figure 17:

Engine and Transmission Harness (6.0L) - 2 of 7


Object Number: 1964479  Size: MF
(1)Ignition Coil (Odd) Connector -- X113
(2)Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor Connector -- B69
Figure 18:

Engine and Transmission Harness (6.0L) - 3 of 7


Object Number: 1964480  Size: MF
(1)Engine Oil Pressure (EOP) Sensor Connector -- B42
(2)Generator Connector -- G8-X1
Figure 19:

Engine and Transmission Harness (6.0L) - 4 of 7


Object Number: 1964481  Size: MF
(1)Fuse Block Underhood -- X124
(2)Engine Control Module 2 Connector -- A43-X2
(3)Engine Control Module 1 Connector -- A43-X1
(4)Starter Connector -- M15
(5)Knock Sensor (KS) Right Connector -- B65
(6)Engine Oil Level/Temperature Sensor Connector -- B41
(7)Crankshaft Position (CKP) Sensor Connector -- B30
Figure 20:

Engine and Transmission Harness (6.0L) - 5 of 7


Object Number: 1964482  Size: MF
(1)Manifold Absolute Pressure (MAP) Sensor Connector -- B67
(2)Evaporative Emission (EVAP) Canister Purge Solenoid Valve Connector -- Y123
(3)Throttle Body Connector -- Y38
(4)ECVD Solenoid -- L7
(5)A/C Refrigerant Pressure Sensor Connector -- B18
Figure 21:

Engine and Transmission Harness (6.0L) - 6 of 7


Object Number: 2025950  Size: MF
(1)Engine Coolant Temperature (ECT) Sensor Connector -- B39
(2)Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 Connector -- B166
(3)Engine Block Ground -- G112
(4)Knock Sensor (KS) Left Connector -- B65
Figure 22:

Engine and Transmission Harness (6.0L) - 7 of 7


Object Number: 1964484  Size: MF
(1)Engine Block Ground -- G110
(2)Fuel Injector (Odd) Connector -- L2
(3)Ignition Coil (Even) Connector -- X112
Figure 23:

4 Speed Automatic Transmission Harness (3.6L)


Object Number: 1964457  Size: MF
(1)Park/Neutral Position (PNP) Switch Connector -- S187
(2)Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2 Connector -- B58
(3)Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 Connector -- B166
(4)Automatic Transmission Connector -- X121
(5)Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 Connector -- B56
(6)Vehicle Speed Sensor (VSS) Connector -- B83
Figure 24:

5 Speed Automatic Transmission Harness (3.6L)


Object Number: 1964458  Size: MF
(1)Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2 Connector -- B58
(2)Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 Connector -- B166
(3)Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 Connector -- B56
(4)Automatic Transmission Connector -- X121
Figure 25:

6 Speed Automatic Transmission Harness (6.0L)


Object Number: 1964474  Size: MF
(1)Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 Connector -- B57
(2)Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 Connector -- B166
(3)Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2 Connector -- B57
(4)Automatic Transmission Connector -- X121
Figure 26:

6 Speed Manual Transmission Harness (3.6L)


Object Number: 1964459  Size: MF
(1)Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2 Connector -- B58
(2)Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 Connector -- B166
(3)Backup Lamp Switch Connector -- S32
(4)Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 Connector -- B56
Figure 27:

6 Speed Manual Transmission Harness (6.0L)


Object Number: 1964475  Size: MF
(1)Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2 Connector -- B57
(2)Reverse Lockout Solenoid Connector -- Y144
(3)Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 Connector -- B166
(4)Backup Lamp Switch Connector -- S32
(5)Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 Connector -- B57
Figure 28:

Battery Positive Wiring


Object Number: 2025959  Size: MF
(1)Battery Positive Connector -- G1-X1
(2)Dash Panel Grommet / Stud
(3)Rear Battery Ground -- G401
(4)Battery Negative Connector -- G1-X2
Figure 29:

Instrument Panel Wiring - Right Kick Panel


Object Number: 2025972  Size: MF
(1)Body Front Wiring Connector 5 -- X207
(2)Body Front Wiring Connector 4 -- X204
(3)Body Front Wiring Connector 3 -- X200
(4)Right Hand Body Wiring Connector 1 -- X201
(5)Right Hand Body Wiring Connector 3 -- X254
(6)Right Hand Body Wiring Connector 2 -- X253
Figure 30:

Body Wiring - Right Kick Panel


Object Number: 2025960  Size: MF
(1)Repeater Lamp - Right Connector -- E75
(2)Express Down Window Module -- A54
(3)Body Harness to Right Hand Front Door Harness Connector 1-- X303
(4)Right Hand A Pillar Ground Connector -- G304
(5)Right Hand Instrument Panel Connector 3 -- X254
(6)Right Hand Instrument Panel Connector 2 -- X253
(7)Right Hand Instrument Panel Connector 1 -- X201
(8)Body Front Wiring Connector -- X206
Figure 31:

Instrument Panel Wiring - Left Kick Panel


Object Number: 2025973  Size: MF
(1)Bluetooth Module Connector -- A144
(2)HVAC Control Module Connector 2-- A14-X2
(3)HVAC Control Module Connector 1 -- A14-X1
(4)I/P to I/P Compartment Lamp Wiring Connector - X205
(5)Blower Motor Connector -- M3
(6)Left Hand Body Wiring Connector -- X202
(7)Antenna Quad Harness to Coaxial Harness Connector -- X328
(8)Fuse Block - Instrument Panel -- X129
(9)Bluetooth Connector -- X137
(10)Left Cockpit Endplate Ground -- G202Left Cockpit Endplate Ground -- G202
Figure 32:

Body Wiring - Left Kick Panel


Object Number: 2025963  Size: MF
(1)Body Harness to Left Hand Front Door Harness Connector 1 -- X304
(2)Repeater Lamp - Left Connector -- E75
(3)Antenna Quad Harness to Coaxial Harness Connector -- X328
(4)Left Hand Instrument Panel Connector 1 -- X202
(5)Left Hand A Pillar Ground -- G305
Figure 33:

Instrument Panel Wiring - Centre


Object Number: 2025974  Size: MF
(1)Cigar Lighter - Front Connector -- X113
(2)Sport Gauges Connector -- P6 (SV6), X241 (SS)
(3)Radio Connector 5-- A133
(4)Radio Connectors 1, 2, 3, 4 -- A133
(5)Resistor Terminator
(6)Console Bracket Ground -- G303
(7)I/P Harness to Console Bracket -- X223
(8)Automatic Transmission Shift Lever Connector -- S22
(9)Multifunction Centre Console Switch Connector -- S73
Figure 34:

Instrument Panel Wiring - Right Side


Object Number: 2025975  Size: MF
(1)Ambient Light/Sun Load Sensor Connector -- B55
(2)I/P Harness to Headliner Harness Connector 2 -- X213
(3)Speaker - RF Tweeter Connector -- B112
(4)Headlamp and Dimmer Panel Switch Connector -- S125
(5)Instrument Panel Cluster (IPC) Connector -- P3
(6)Clutch Jumper Harness Connector -- X210 (Manual Transmission Only)
(7)Speaker -- Centre Connector -- B121
Figure 35:

Instrument Panel Wiring - Left Side


Object Number: 2025976  Size: MF
(1)Speaker - LF Tweeter Connector -- B112
(2)Inflatable Restraint I/P Module Connector 1 -- A62-X1
(3)I/P Data link Connector -- X95
(4)Inflatable Restraint I/P Module Connector 2 -- A62-X2
Figure 36:

Instrument Panel Wiring - Steering Column


Object Number: 2025977  Size: MF
(1)Windshield Wiper/Washer Switch Connector -- S247
(2)Ignition Key Cylinder Lamp Connector -- E105
(3)Turn Signal Multifunction Switch Connector -- S231
(4)Inflatable Restraint Steering Wheel Module Coil Connector -- X116-X1
(5)Right Cockpit endplate Ground -- G201
(6)Headlamp and Dimmer Panel Switch Connector -- S125
(7)Inflatable Restraint Steering Wheel Module Coil Connector -- X116-X2
(8)Body Control Module (BCM) Connector -- A15-X1 to A15-X7
(9)Accelerator Pedal Position (APP) Sensor Connector -- B22
(10)Data Link Connector (DLC) -- X40
(11)Brake Pedal Position (BPP) Sensor Connector -- B165
(12)Theft Deterrent Control Module Connector -- A171
(13)Ignition Switch Connector -- S149
Figure 37:

Centre Console Wiring


Object Number: 2025979  Size: MF
(1)Console to Body Wiring Connector -- X309
(2)Cigar Lighter - Console Connector -- X113
(3)Park Brake Switch Connector -- S181
Figure 38:

Door Wiring


Object Number: 2025980  Size: MF
(1)Outside Rear View Mirror Connector -- M11
(2)Door Latch Assembly Connector -- Y13
(3)Window Motor - RF Connector -- M10
(4)Speaker - Door Connector -- B108
(5)Body Harness to Right Hand Front Door Harness Connector 1-- X303
Figure 39:

Headliner Wiring


Object Number: 2025982  Size: MF
(1)Dome Lamp Connector -- E67
(2)Headliner to I/P Harness Connector -- X212
Figure 40:

Body Wiring - Roof


Object Number: 2025965  Size: MF
(1)Rear Window Defogger Grid Connector -- R22-X2
(2)Centre High Mounted Stop Lamp (CHMSL) Connector -- E79
(3)Radio Antenna Connector -- W6
Figure 41:

Body Wiring - Right Side


Object Number: 2025966  Size: MF
(1)Rear Window Defogger Grid Connector -- R22-X1
(2)Cargo Lamp Right Connector -- E62
(3)Body Harness to Pretensioner Driver Harness Connector -- X356
(4)Body Harness to Driver Seat Harness Connector -- X315
(5)Body Harness to Driver Seat Harness Connector -- X311
Figure 42:

Body Wiring - Left Side


Object Number: 2025967  Size: MF
(1)Remote Function Actuator Connector -- A157
(2)Back Panel Ground -- G407
(3)Rear Object Detecting Connector -- X156
(4)Cargo Lamp Left Connector -- E62
(5)Battery Tray Ground -- G310
(6)Fuse Block - Rear -- X131
(7)Battery Positive Connector -- G1-X1
(8)Body Harness to Pretensioner Passenger Harness Connector -- X355
(9)Battery Current Sensor Connector -- B168
Figure 43:

Body Wiring - Centre Console


Object Number: 2025985  Size: MF
(1)Inflatable Restraint Sensing and Diagnostic Module Connector -- A65-X1
(2)Inflatable Restraint Sensing and Diagnostic Module Connector -- A65-X2
(3)Accessory Power Outlet Console Connector -- X112
(4)SDM Bracket Ground -- G308
(5)Console to Body Wiring Connector -- X309
(6)Window / Door lock / Outside Rearview Mirror Switch Connector -- S169-X1
(7)Window / Door lock / Outside Rearview Mirror Switch Connector -- S169-X2
Figure 44:

Body Wiring - Centre Console


Object Number: 2025349  Size: MF
(1)Inflatable Restraint Sensing and Diagnostic Module -- A65-X2
(2)Inflatable Restraint Sensing and Diagnostic Module -- A65-X1
(3)SDM Bracket Ground -- G308
Figure 45:

Body Wiring - Fuel Tank Wiring


Object Number: 2025968  Size: MF
(1)Fuel Level Sensor (Secondary) Connector -- B53
(2)Body Wiring Harness to Fuel Tank Harness Connector -- X305
(3)Body to Rear Axle Harness Connector -- X360
(4)Fuel Pump and Sender Assembly Connector -- M8
Figure 46:

Rear Axle Wiring


Object Number: 2025983  Size: MF
(1)Wheel Speed Sensor (WSS) LR Connector -- B76
(2)Body to Rear Axle Harness Connector -- X360
(3)Wheel Speed Sensor (WSS) RR Connector -- B76
Figure 47:

Utility Tray Wiring


Object Number: 2025971  Size: MF
(1)Fuel Filler Door Latch Connector -- Y10
(2)Body Rear to Utility Tray Wiring Connector -- X432
Figure 48:

Body Wiring - Endgate


Object Number: 2025969  Size: MF
(1)Latch Bracket Ground -- G402
(2)License Plate Lamp Connector -- E44
(3)Body Rear to Utility Tray Wiring Connector -- X432
(4)Tail Lamp Assembly - Right Connector -- X452
(5)Body Rear to License Plate Lamp Wiring Connector -- X433
(6)Tail Lamp Assembly - Left Connector -- X453