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

Power, Ground, Serial Data, and Message Center


Object Number: 1740933  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Control Module References
Indicators
BATT 1, HAZRD LAMP, HUD, IPC/HVAC/SEC/RKE, IS LAMP, PK3, RDO and RDO AMP Fuses
Ignition Switch-ACCY/RUN/START and RUN and START Bus Bars, HVAC BLWR, IPC/BCM/PK3, PK3, and PRK LCK IGN Fuses
BATT 1, HAZRD LAMP, HUD, IPC/HVAC/SEC/RKE, IS LAMP, PK3, RDO and RDO AMP Fuses
G201
Data Communication Schematics
Figure 2:

Indicators


Object Number: 1740934  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Control Module References
Engine Oil Pressure
Power, Ground, Serial Data, and Message Center
I/P and Console Lamps
Turn/Stop Lamps and Indicators
G202
Hydraulic Brake Schematics
Module Power, Ground, Serial Data, and MIL
Figure 3:

Engine Oil Pressure


Object Number: 1740935  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Control Module References
Gages
Indicators
Data Communication Schematics
Figure 4:

Gages


Object Number: 1740936  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Control Module References
Driver Information Center-UH9
Engine Oil Pressure
Fuel Controls-Fuel Pump Controls
Data Communication Schematics
Figure 5:

Driver Information Center - UH9


Object Number: 1740938  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Control Module References
Gages
G201