GM Service Manual Online
For 1990-2009 cars only

Lighting Systems Component Views P42

Figure 1:

Forward Lamps Harness (Typical)


Object Number: 180064  Size: MF
(1)Lamp, Left Front Park and Turn Signal
(2)C203
(3)C200
(4)C202
(5)Horn, High Tone (F - Note)
(6)Horn, Low Tone (A - Note)
(7)Lamp, Left Front Sidemarker
(8)Headlamp, Left
(9)Headlamp, Right
(10)Lamp, Right Front Sidemarker
(11)Lamp, Right Front Park and Turn Signal
Figure 2:

Automatic Transmission, Upper LH Rear


Object Number: 180082  Size: MF
(1)Transmission Input Speed Sensor
(2)Transmission Output Speed Sensor
(3)C301
(4)C2
(5)C1
(6)Park/Neutral Position (PNP) and Backup Lamps Switch
Figure 3:

Steering Column


Object Number: 329566  Size: SF
(1)Hazard Lamps Flasher Switch
(2)Transmission Range (TR) Lamp
(3)Multifunction Lever
(4)Turn Signal Switch Connector
(5)Cruise Control Switch Connector (P32)
(6)Wiper Switch Connector
Figure 4:

IP Side of Engine Wiring -- All Engines (P42)


Object Number: 180085  Size: MF
(1)Data Link Connector (DLC)
(2)Headlamps Dimmer Switch
(3)Brake Transmission Shift Interlock (BTSI) Solenoid
(4)Brake Transmission Shift Interlock (BTSI) Relay
(5)Horn Relay
(6)Daytime Running Lamps (DRL) Relay
(7)C210
(8)C211
(9)Torque Converter Clutch (TCC) and Stoplamps Switch
(10)Ignition Switch
(11)C1
(12)C2
(13)C1
(14)C2
(15)Turn Signal Switch Connector
(16)Crank Fuse
Figure 5:

Pedal Switches


Object Number: 180088  Size: MF
(1)Torque Converter Clutch (TCC) and Stop Lamps Switch
(2)Clutch Pedal Position (CPP) Switch
Figure 6:

Rear Lamps Typical (Body Builder Installed)


Object Number: 330034  Size: MF
(1)Lamp, Left Rear Sidemarker
(2)C400
(3)Lamp, Right Backup
(4)Lamp, Left Tail and Stop/Turn Signal
(5)Lamp, Left License
(6)Lamp, Right License
(7)G401
(8)Lamp, Right Tail and Stop/Turn Signal
(9)Lamp, Right Backup
(10)Lamp, Right Rear Sidemarker

Lighting Systems Component Views P32

Figure 1:

Radiator Support Wiring (L65)


Object Number: 186179  Size: MF
(1)C203
(2)Torque Converter Clutch (TCC) and Stoplamps Switch
(3)Vehicle Speed Sensor (VSS) Calibrator
(4)Accelerator Pedal Position Module (APP) (Part of Accelerator Pedal Assembly)
(5)Engine Coolant Level Switch
(6)Auxiliary Engine Coolant Fan A/C Pressure Switch
(7)Starter Relay
(8)Brake Pressure Differential Switch
(9)A/C Compressor Relay
(10)Fuel Pump Relay
(11)Park/Neutral Position (PNP) Switch Relay
(12)Stoplamps Switch
Figure 2:

Dash and Steering Column


Object Number: 364655  Size: MF
(1)C203
(2)Brake Pedal Bracket
(3)Stoplamps Switch
(4)Torque Converter Clutch (TCC) and Stoplamps Switch
(5)Turn Signal Switch Connector
Figure 3:

Engine Wiring Harness to Dash and Steering Column


Object Number: 186174  Size: MF
(1)Turn Signal Switch Connector
(2)Headlamps Dimmer Switch
(3)Data Link Connector (DLC)
(4)Powertrain Control Module (Diesel)
(5)Ignition Switch
(6)Brake Transmission Shift Interlock (BTSI) Solenoid
(7)Daytime Running Lamps (DRL) Relay
(7)Daytime Running Lamps (DRL) Relay
(8)Horn Relay
(8)Horn Relay
(9)Brake Transmission Shift Interlock (BTSI) Relay
(10)Fan Control Relay
Figure 4:

Steering Column


Object Number: 329566  Size: SF
(1)Hazard Lamps Flasher Switch
(2)Transmission Range (TR) Lamp
(3)Multifunction Lever
(4)Turn Signal Switch Connector
(5)Cruise Control Switch Connector (P32)
(6)Wiper Switch Connector
Figure 5:

Engine And Transmission Harness


Object Number: 393813  Size: MF
(1)Glowplug Controller (Diesel)
(1)Glowplug Controller (Diesel)
(2)Water In Fuel Indicator Sensor (Diesel)
(3)C103
(4)C104
(5)Auto Apply Park Brake Harness
(6)Transmission
(7)Transmission Output Speed Sensor
(8)C301
(9)Transmission Input Speed Sensor
(10)Park/Neutral Position and Backup Lamps Switch
(11)To G106
(12)Fuel Heater (Diesel)