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

Hood


Object Number: 310026  Size: MF
(1)Hood
(2)Hood Reinforcement
(3)Underhood Lamp Assembly Electrical Connector
(4)Underhood Lamp Assembly
(4)Underhood Lamp Assembly
Figure 2:

LF Corner of the Bumper


Object Number: 350006  Size: MF
(1)Bumper
(2)Fog Lamp - LF
(3)Air Deflector
(4)Fog Lamp - LF Connector
(5)Fog Lamp Harness
(6)Fog Lamp Bracket (Part of Fog Lamp)
Figure 3:

RH Front of Vehicle


Object Number: 310805  Size: MF
(1)Upper Radiator Support (Tie Bar)
(2)RH Lowbeam Lamp
(3)Snowplow (Option) Connector C127
(4)RH Front Park/Turn Lamp Bulb
(5)RH Front Park/Turn Lamp Socket
(6)RH Front Park/Turn Lamp Lens
(7)RH Marker Lamp Socket
(8)RH Daytime Running Lamp Socket
(9)RH Daytime Running Lamp Bulb
(10)RH Daytime Running Lamp Lens
(11)RH Headlamp Assembly
(12)RH Highbeam Lamp
Figure 4:

LH Front of Vehicle


Object Number: 310802  Size: MF
(1)Upper Radiator Support (Tie Bar)
(2)LH Headlamp Assembly
(3)LH High Beam Lamp Connector
(4)LH Daytime Running Lamp Bulb
(5)LH Daytime Running Lamp Socket
(6)Windshield Washer Reservoir
(7)LH Front Park/Turn Lamp Socket
(8)LH Front Marker Socket
(9)LH Front Marker Bulb
(10)LH Front Park/Turn Lamp Bulb
(11)Snowplow (Option) Connector C125
(12)LH Low Beam Connector
(13)LH Front Marker Lamp Lens (RH similar)
Figure 5:

Ambient Light Sensor


Object Number: 310130  Size: MF
(1)Instrument Panel Bracket
(2)Ambient Light Sensor Harness
(3)Ambient Light Sensor Connector
(4)Ambient Light Sensor
(5)Instrument Panel
Figure 6:

Center High Mounted Stop/Cargo Lamp


Object Number: 350025  Size: MF
(1)Center High Mounted Stop/Cargo Lamp
(2)Center High Mounted Stop/Cargo Lamp Connector
(3)Roof
Figure 7:

Roof Lamps


Object Number: 327891  Size: MF
(1)Lamp Assembly
(2)Lamp Assembly Socket
(3)Lamp Assembly Harness
(4)Lamp Assembly Nuts
(5)Bulb
(6)Roof Marker Lamp - Right
(7)Clearance Lamps
(8)Roof Marker Lamp - Left
Figure 8:

Steering Column Components


Object Number: 349986  Size: LF
(1)Hazard Button
(2)High Beams/Cruise/Wiper/Washer
(3)Cruise Control Switches
(4)Tilt Steering Actuator
(5)Inflatable Restraint Harness
(6)C201 Inline Connector
Figure 9:

Instrument Panel Switches-LH


Object Number: 571665  Size: LF
(1)Electronic Traction Control Switch or Transfer Case Selector Switch
(2)Cargo Lamp/Rear Wiper Switch
(3)Fog Lamp Switch
(4)Headlamp Switch
Figure 10:

Lamp Switch Housing


Object Number: 310113  Size: MF
(1)Automatic Transfer Case (ATC) Electrical Connector
(2)Automatic Transfer Case (ATC) Electrical Connector
(3)Automatic Transfer Case (ATC) Select Switch
(4)Cargo/Fog Lamp Switch
(5)Headlamp and Panel Dimmer Switch
(6)Instrument Panel
(7)Headlamp and Panel Dimmer Switch Electrical Connector
(8)Cargo/Fog Lamp Switch Electrical Connector
Figure 11:

Lower Left Side of the I/P Components


Object Number: 310145  Size: MF
(1)Fuse Block-Left I/P Connector
(2)Body Control Module (BCM) Connectors
(3)Splice Pack SP205
(4)Fuse Block-Left I/P
(5)Data Link Connector (DLC)
(6)Courtesy Lamp-Left
(7)Courtesy Lamp Socket-Left
(8)Support to Dash-Left
(9)Right Windshield Pillar Trim Panel
Figure 12:

Center of the I/P -- Accessory Switches


Object Number: 350001  Size: LF
(1)Fog Lamp Switch
(2)Roof Beacon Switch
(2)Roof Beacon Switch
(3)Accessory Switch Housing
(3)Accessory Switch Housing
(4)Instrument Panel
Figure 13:

Lower Center of the I/P Components


Object Number: 310152  Size: MF
(1)Ashtray Lamp Socket
(2)Bulb
(3)Ashtray Lamp Shield
(4)Instrument Panel
(5)Accessory Power Outlet
(6)Cigar Lighter Assembly
Figure 14:

Instrument Panel Compartment Lamp


Object Number: 350014  Size: MF
(1)Instrument Panel
(2)Instrument Panel Compartment Lamp and Switch
Figure 15:

Dome/Reading Lamp (Regular Cab)


Object Number: 350012  Size: MF
(1)Overhead Console
(2)Dome/Reading Lamp
(3)Dome/Reading Lamp Electrical Connector
Figure 16:

Overhead Console (Extended Cab)


Object Number: 350007  Size: MF
(1)Headliner
(2)Overhead Console
(3)Overhead Console Electrical Connector
(4)Headliner Harness Electrical Connector
Figure 17:

Driver Door Panel Components -- Courtesy Lamp


Object Number: 350018  Size: MF
(1)Door Courtesy Lamp Electrical Connector
(2)Door Courtesy Lamp
(3)Left Door
Figure 18:

Manual Transmission (Heavy Duty)


Object Number: 310252  Size: MF
(1)Backup Lamp Switch Connector
(2)Speed Sensor
(3)Speed Sensor Connector
(4)Backup Lamp Switch
Figure 19:

Manual Transmission (Light Duty)


Object Number: 310254  Size: MF
(1)Speed Sensor
(2)Transmission Crossmember
(3)HO2 Sensor Bank 1 Sensor 2 Connector
(4)Backup Lamp Switch Connector
(5)HO2 Sensor Bank 1 Sensor 1 Connector
Figure 20:

External Components


Object Number: 310233  Size: LF
(1)Vehicle Speed Sensor
(2)Harness Connector
(3)Backup Lamp Switch Connector (Part of the Park/Neutral Position Switch)
(4)Park/Neutral Position Switch Connector
(5)Input Shaft Speed Sensor Connector
(6)Park/Neutral Position Switch
Figure 21:

RR Frame -- Lighting Components


Object Number: 623153  Size: MF
(1)Back Body Opening Lower Frame
(2)Rear Lamp Wiring Harness
(3)Inline Connector 403 (Rear Lamp Harness Side)
(4)Inline Connector 403 (Tail Lamp Harness Side)
(5)Inline Connector 404 (Rear Lamp Harness Side)
(6)Inline Connector 404 (Rear License Plate Harness Side)
(7)License Plate Wiring Harness
Figure 22:

Rear of the Vehicle Components (Pickup)


Object Number: 350027  Size: MF
(1)Rear Cross Sill
(2)Right Tail/Stop-Turn Lamp
(3)Right Taillamp Harness
(4)Bed to Sill Reinforcement
(5)Rear Lamp Harness Connectors
(6)Left Taillamp Harness
(7)Left Tail/Stop-Turn Lamp
(8)Rear Lamps Bussing Block
Figure 23:

Rear Bumper (Utility)


Object Number: 623140  Size: MF
(1)Rear Bumper
(2)Tail Lamp Jumper Harness
(3)Junction Block Connector C3
(4)License Plate Lamp-RH (LH similar)
Figure 24:

Center of the Rear Bumper (Pickup)


Object Number: 309881  Size: MF
(1)Lamp Socket
(2)Bulb
(3)RH License Lamp
(4)Bumper
(5)LH License Lamp
(6)Rear Cross Sill
(7)Rear Lamps Bussing Block-Pickup only
Figure 25:

License Lamp (without Bumper)


Object Number: 350024  Size: MF
(1)Frame
(2)License Lamp Electrical Connector
(3)License Lamp
Figure 26:

Trailer Wiring Harness


Object Number: 349960  Size: MF
(1)Trailer Wiring Connector
(2)Trailer Wiring Receptacle
(3)Frame
(4)Trailer Hitch Receiver
Figure 27:

LR Frame -- Camper Provision


Object Number: 309959  Size: MF
(1)Camper Wiring Harness
(2)Frame
(3)Camper Wiring Harness Connector