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

Power and Class 2 Data Lines


Object Number: 467496  Size: FS
Instrument Cluster Components
Instrument Cluster Circuit Description
Indicators
Exterior Lights Schematics
Power Distribution Schematics
Power Distribution Schematics
Interior Lights Dimming Schematics
Figure 2:

Indicators


Object Number: 467497  Size: FS
Instrument Cluster Components
Instrument Cluster Circuit Description
Grounds
Power and Class 2 Data Lines
Figure 3:

Grounds


Object Number: 467500  Size: FS
Instrument Cluster Components
Instrument Cluster Circuit Description
Indicators
Power Distribution Schematics
Power Distribution Schematics
Ground Distribution Schematics