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

Power, Ground and Serial Data


Object Number: 787943  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Gauges
I/P Fuse Block CIG, HORN, CLSTR, EXT LAMP, FOG, LT HDLP Fuses and HDLP Circuit Breaker
I/P Fuse Block CIG, HORN, CLSTR, EXT LAMP, FOG, LT HDLP Fuses and HDLP Circuit Breaker
I/P Fuse Block TURN-B/U, IGN MDL, PCM and BCM/CLU Fuses
I/P Fuse Block TURN-B/U, IGN MDL, PCM and BCM/CLU Fuses
G110 and G111
Data Link Connector (DLC)
Figure 2:

Gages


Object Number: 787944  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Indicators
Power, Ground and Serial Data
Engine Data Sensors - Pressure and Temperature
Figure 3:

Indicator Lights and EOP


Object Number: 787945  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Gauges
Park Lamp Controls and Front Lamps - Pontiac
Interior Controls Illumination Lamps
Module, Power, Ground, Serial Data and MIL
Module Power, Ground, Serial Data and MIL
Theft Deterrent System Schematics
G204 - 1 of 2