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

Forward Lamp Harness


Object Number: 1803141  Size: LF
(1)Fuse Block - Underhood C3
(2)S112
(3)C145
(4)C141
(5)C143
(6)G101
(7)Cooling Fan - Left Connector
(8)Cooling Fan - Right Connector
(9)G100
(10)C142
(11)C144
(12)C146
(13)S124
(14)C120
Figure 2:

Front of the Engine (L26)


Object Number: 1803031  Size: LF
(1)Fuse Block - Underhood C1
(2)C110
(3)S109
(4)C126
(5)S102
(6)Throttle Actuator Control (TAC) Module Connector
(7)S101
(8)C101
(9)Electronic Brake Control Module (EBCM) Connector
(10)S117 (NU3)
(11)Powertrain Control Module (PCM) C2 Connector
(12)Powertrain Control Module (PCM) C3 Connector
(13)Powertrain Control Module (PCM) C1 Connector
(14)C100
(15)Wheel Speed Sensor (WSS) - LF Connector
(16)S114 (NU3)
(17)G115 (NU3)
(18)G115 (JL9)
(19)Wheel Speed Sensor (WSS) - RF Connector
(20)C104
Figure 3:

Rear of the Engine (L26)


Object Number: 1803023  Size: LF
(1)C101
(2)Evaporative Emission (EVAP) Canister Purge Solenoid
(3)Fuse Block - Underhood C1
(4)C104
(5)Wheel Speed Sensor (WSS) - RF Connector
(6)Engine Oil Pressure (EOP) Sensor Connector
(7)Heated Oxygen Sensor (HO2S) Connector
(8)Wheel Speed Sensor (WSS) - LF Connector
(9)C100
(10)S113 (NU3)
(11)Electronic Brake Control Module (EBCM) Connector
Figure 4:

Front of the Engine (LY7)


Object Number: 1803135  Size: LF
(1)C107
(2)S121
(3)S120
(4)S110
(5)S119
(6)C109
(7)S103
(8)S131
(9)S133
(10)G131
(11)Engine Coolant Temperature (ECT) Sensor
(12)Starter Solenoid
(13)Starter
(14)Engine Oil Pressure (EOP) Sensor
Figure 5:

Rear Cyliner Head (LY7)


Object Number: 1803136  Size: LF
(1)Cylinder Block
(2)Throttle Actuator Control (TAC) Module Connector
(3)S108
(4)Engine Control Module (ECM) C1 Connector
(5)C107
(6)G115
(7)S131
(8)S130
(9)G130
Figure 6:

Body Harness - Front


Object Number: 1803139  Size: LF
(1)C356
(2)C241
(3)C240
(4)C355
(5)C208
(6)Body Control Module (BCM) C2
(7)S303
(8)C260
(9)G301
(10)S350
(11)C202
(12)C311
(13)C313
(14)SP407
(15)G302
(16)C261
(17)Fuse Block - I/P C2
(18)C200
(19)C278
(20)S300
(21)Inflatable Restraint Sensing and Diagnostic Module (SDM)
(22)C315
(23)S406
Figure 7:

Body Harness - Rear Shelf


Object Number: 1954196  Size: MF
(1)Center High Mount Stop Lamp (CHMSL)
(2)C305
Figure 8:

Body Harness - Rear


Object Number: 1803080  Size: LF
(1)C402
(2)C450
(3)C390
(4)S360
(5)S361
(6)Rear Object Sensor Control Module Connector (UD7)
(7)C401
(8)C406
(9)Evaporative Emission (EVAP) Canister Vent Solenoid Valve
(10)Rear Floor Pan
(11)C405
(12)C400
Figure 9:

Console Harness


Object Number: 1803082  Size: LF
(1)Auxiliary Power Outlet
(2)C240
Figure 10:

Steering Column


Object Number: 1803071  Size: LF
(1)Steering Angle Sensor
(2)C201
(3)A/T Shiftlock Solenoid Connector
(4)Horn Switch Connector
(5)C277
(6)Steering Wheel Controls
(7)Multifunction Accessory Switch
(8)Body Control Module (BCM) Connector
Figure 11:

Headliner Harness (CF5)


Object Number: 1803068  Size: LF
(1)C390
(2)Dome/Reading Lamp - Left Connector
(3)Headliner
(4)C317
(5)Inside Rearview Mirror (ISRVM) Connector
(6)Reading Lamp Overhead Console
(7)C318
(8)C398
(9)S394
(10)S393
(11)S398
Figure 12:

Driver Door Frame and Trim Harnesses


Object Number: 1803037  Size: LF
(1)Door Frame
(2)Door Trim Panel
(3)Door Latch Connector
(4)S502
(5)S501
(6)C501
(7)C260
(8)S500
Figure 13:

Passenger Door Frame and Trim Harnesses


Object Number: 1803062  Size: LF
(1)Door Trim Panel
(2)Door Frame
(3)S604
(4)C261
(5)C601
(6)S605
(7)Door Latch Connector
Figure 14:

Driver Seat


Object Number: 1803076  Size: LF
(1)Seat Belt Pretensioner - Left
(2)Lumbar Motor
(3)S330
(4)Lumbar Adjuster Switch - Driver
(5)Seat Adjuster Switch - Driver
(6)S331
(7)Heated Seat Relay
(8)C311
(9)C316
(10)Seat Adjuster Motor Assembly Connector
Figure 15:

Passenger Seat


Object Number: 1803086  Size: LF
(1)C313
(2)Inflatable Restraint Passenger Presence System (PPS) Module
(3)S333
(4)C315
Figure 16:

Left Rear Door Harness


Object Number: 1456707  Size: LF
(1)Window/Door Lock Switch Connector
(2)Door Frame
(3)Door Lock Actuator
(4)Door Trim Panel
(5)Window Motor Connector
(6)C355
Figure 17:

Right Rear Door Harness


Object Number: 1803130  Size: LF
(1)Door Frame
(2)Window/Door Lock Switch Connector
(3)C356
(4)Window Motor
(5)Door Trim Panel
(6)Door Latch Assembly Connector
Figure 18:

Object Sensor and License Lamp Harnesses


Object Number: 1803064  Size: MF
(1)Rear Fascia
(2)C450
(3)S450
(4)S451
(5)S401
(6)S402
(7)C406