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

Power, Ground, Serial Data, and Driver Information


Object Number: 1807156  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Control Module References
Gages
Ignition Switch - ACCY/RUN and RUN/START Bus Bars, and IGN B Fuse
IGN E, SEO IGN, and SIR Fuses
B+ Bus
Power, Ground, DLC and Splice Pack SP205
G200
G200
Displays and Gages Schematic Icons
G200
G200
Instrument Panel Dimming - 4 of 5
Instrument Panel Dimming - 4 of 5
Figure 2:

Gages


Object Number: 1807164  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Control Module References
Indicators
Power, Ground, Serial Data, and Driver Information
Power, Ground, DLC and Splice Pack SP205
Engine Data Sensors - 5-Volt and Low Reference
Figure 3:

Indicators


Object Number: 1807171  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Control Module References
Gages
07 H2 Exterior Lights Schematics - Marker Lamps and Front Turn Signal Lamps
Module Power, Ground, Serial Data, and MIL
Rear Wiper/Washer Controls and Washer Fluid Level Sensor
Power, Ground, DLC and Splice Pack SP205
G103 and G103