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

Power, Ground, Tachometer, Speedometer and Odometer


Object Number: 791383  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Indicators
RH HDLP, LH HDLP, GEN BATT, LH BEC BATT2, STOP LPS, HAZARD LPS, IPC/HVAC BATT, BFC BATT Fuses
RH HDLP, LH HDLP, GEN BATT, LH BEC BATT2, STOP LPS, HAZARD LPS, IPC/HVAC BATT, BFC BATT Fuses
G106- Export Only
PCM ACC, IPC/BFC ACC Fuses
PCM ACC, IPC/BFC ACC Fuses
G202
Figure 2:

Indicators


Object Number: 872360  Size: FS
Master Electrical Component List
Indicator/Warning Message Description and Operation
Oil Pressure and Level Switch
Power, Ground, Tachometer, Speedometer and Odometer
Power, Ground, Serial Data and MIL
Power, Ground, Serial Data and MIL
Switches and Indicators
Instrument Panel Lamps
Power, Ground, Tachometer, Speedometer and Odometer
Figure 3:

Fuel Level, Oil Level and Oil Pressure


Object Number: 904968  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Indicators
Data Link Connector (DLC) Schematics
Engine Data Sensors - Pressure and Temperature
Engine Data Sensors - Pressure and Temperature
G102 and G104
G102 and G104
G202