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

Power, Ground, DLC and Indicators


Object Number: 1444977  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Control Module References
Gages
BCM Fuses; CLUSTER, DOOR LOCKS, INTERIOR LIGHTS, HVAC/PWR SND, ISRVM/HVAC, CRUISE SW
BCM Fuses; CLUSTER, DOOR LOCKS, INTERIOR LIGHTS, HVAC/PWR SND, ISRVM/HVAC, CRUISE SW
Brake Warning System Schematic
Park Lamp Control, Front Park, Marker and Position Lamps
Hazard, Stop Lamps, and Turn Signal Inputs
DLC, Ground, MIL and Power
G201
Wiper/Washer Switch, Washer Pumps and Level Switch
Class 2
Figure 2:

Gages


Object Number: 1444981  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Control Module References
Messages
Power, Ground, DLC and Indicators
Low Reference Bussing
Class 2
G302, G401 and G402
GMLAN - A/T
GMLAN - M/T
Figure 3:

Messages


Object Number: 1444983  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Control Module References
Gages
Dimmer Controls, IPC, DIC and Switches
Class 2