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

Power, Ground, and Class 2


Object Number: 765512  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Gauges
Battery Feed to the Fuse Block-Rear
IGN-1, VENT SOL, SIR Fuses and IGN 1 Relay (Fuse Block-Rear)
Battery Feed to the Fuse Block-Rear
HVAC BLO, AUDIO, IP Fuses (Fuse Block-Rear)
IGN-1, VENT SOL, SIR Fuses and IGN 1 Relay (Fuse Block-Rear)
HVAC BLO, AUDIO, IP Fuses (Fuse Block-Rear)
G201, 2 of 3
G201, 2 of 3
Instrument Panel/Console Dimming
G201, 1 of 3
G201, 1 of 3
Serial Data Class 2
Generator Controls and Battery
Figure 2:

Gages


Object Number: 863360  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Indicators
Power, Ground, and Class 2
Serial Data Class 2
Engine Data Sensors - Pressure and Temperature
Fuel Controls - EVAP Controls
CCM, PCM Controls and Vehicle Speed Input
Figure 3:

Indicators


Object Number: 765515  Size: FS
Master Electrical Component List
Gauges
Instrument Panel/Console Dimming
Turn Signal/Hazard Lamp-Left
Indicators and Traction Control Switch
Brake Warning System Schematics
Serial Data Class 2
Wiper Washer Rain Sensor
Module Power, Ground, Serial Data and MIL
G201, 1 of 3
G201, 1 of 3