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

DLC, Gages, Ground, Indicators, and Power


Object Number: 875832  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Fuel Level and Oil Pressure
Fuse Block-Underhood Fuses: IP BATT2 and RUN (IGN3), BCM Fuses: BCM ELECT, CLUSTER, FUELPUMP, HVAC, IGN. SW, and STOP
Interior Lights Dimming Schematics
Turn/Hazard Lamps
Vehicle Theft Deterrent
Ground, MIL, Power, and Serial Data
Data Link Connector (DLC) Schematics
G201
Figure 2:

Fuel Level and Oil Pressure


Object Number: 881523  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
DLC, Gages, Ground, Indicators, and Power
Engine Data Sensors-Pressure and Temperature
Data Link Connector (DLC) Schematics