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

Power, Ground, Serial Data and Message Center


Object Number: 816333  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Indicators
Fuse Block-Underhood Fuse:48 Fuse Block-Center Console Fuses:BCM L, HZD FL, HUD, RADIO, RD AMP and IP MDL
Fuse Block-Underhood Fuse:48 Fuse Block-Center Console Fuses:BCM L, HZD FL, HUD, RADIO, RD AMP and IP MDL
Fuse Block-Underhood Fuse: 47 Fuse Block-Center Console Fuses: INKEY, KEY SOL, IGN 0 and FRT BLWR
Windshield Wiper/Washer
Ground G202 Schematics
Ground G202 Schematics
Cigar Lighter/Auxiliary Outlets Schematics-Buick
Ground G111 Schematics
Ground G111 Schematics
Figure 2:

Indicators


Object Number: 816335  Size: FS
Master Electrical Component List
Indicator/Warning Message Description and Operation
Gauges
Power, Ground, Serial Data and Message Center
Dimming Controls and Panel Lamps 2 of 2-Buick
Turn/Stop Lamps and Indicators - Pontiac
Turn/Stop Lamps and Indicators - Pontiac
Ground G201 Schematics
Brake Warning Schematics
Power, DLC, Ground, and MIL
Figure 3:

Gauges


Object Number: 816337  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Driver Information Center (DIC)
Indicators
EGR, EVAP
Cigar Lighter/Auxiliary Outlets Schematics-Buick
Figure 4:

Driver Information Center (DIC)


Object Number: 816339  Size: FS
Master Electrical Component List
Driver Information Center (DIC) Description and Operation
Gauges
Ground G202 Schematics