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

Power, Ground, and Indicators


Object Number: 1458167  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Gages
BACKUP/TURN, BCM/ECM/CRUISE, CRUISE SW, and IGN 1 Fuses
BACKUP/TURN, BCM/ECM/CRUISE, CRUISE SW, and IGN 1 Fuses
BCM CLUSTER, DEFOG LED, and REAR DEFOG Fuses
Interior Lights Dimming
Turn/Hazard Lamps
Body Rear End Schematics
Data Link Connector
G191, G202, and G303
Figure 2:

Gages


Object Number: 1458192  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Module Power, Ground, and Indicators
Data Link Connector
Engine Data Sensors - Low References
Engine Data Sensors - Low References