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

Power, Ground, Tachometer, Speedometer and Odometer


Object Number: 1392103  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
PCM ACC and IPC/BFC ACC Fuses
RH HDLP, LH HDLP, GEN BATT, LH BEC BATT2,, STOP LPS, HAZARD LPS, IPC/HVAC BATT, BFC BATT Fuses
PCM ACC and IPC/BFC ACC Fuses
G202
Figure 2:

Indicators


Object Number: 1392104  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Fuel Level and Oil Pressure
Power, Ground Tachometer, Speedometer and Odometer
Power, Ground, Serial Data and MIL
Power, Ground, Serial Data and MIL
Switches and Indicators
Instrument Panel Lamps
G202
Figure 3:

Fuel Level and Oil Pressure


Object Number: 1392105  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Engine Data Sensors - Pressure and Temperature
Engine Data Sensors-Pressure and Temperature
Indicators
Data Link Connector (DLC) Schematics