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

Power and Grounds


Object Number: 783084  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Indicators and Communication
LH BFC BATT 2, STOP LPS, HAZARD LPS, IPC/HVAC BATT Fuses
LH BFC BATT 2, STOP LPS, HAZARD LPS, IPC/HVAC BATT Fuses
IGN BATT 1, IGN SW BATT 2, Ignition Switch
IGN BATT 1, IGN SW BATT 2, Ignition Switch
Panel Dimming
Power, Grounds, and Park Lamp Relay
SP202
Figure 2:

Indicators and Communication


Object Number: 1493960  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Power and Grounds
Engine Data Sensors - Pressure and Temperature
Data Link Connector (DLC) Schematics
Power, Ground, Serial Data and MIL