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

Ground, Odometer/PRNDL, Power, and VSS


Object Number: 808820  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Gages, Illumination, and Indicators
CLSTR/BCM, DR LK, LEFT IP, LT HTD ST/BCM, and PWR MIR Fuses, RETAINED ACCSRY PWR BRKR Circuit Breaker, HEADLAMP, and RETAINED ACCSRY PWR Relays
CLSTR/BCM, DR LK, LEFT IP, LT HTD ST/BCM, and PWR MIR Fuses, RETAINED ACCSRY PWR BRKR Circuit Breaker, HEADLAMP, and RETAINED ACCSRY PWR Relays
A/C/CRUISE, A/C FAN, CRUISE, PCM/BCM/CLSTR, and PCM (CRANK) Fuses
G203 (1 of 3)
G203 (1 of 3)
DLC Schematics
Courtesy Lamps Control, and I/P
Figure 2:

Gages, Illumination, and Indicators


Object Number: 680780  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Message Center
Ground, Odometer/PRNDL, Power, and VSS
DLC Schematics
Front Park, Turn/Hazard Lamps (Impala)
Front Park, Turn/Hazard Lamps (Impala)
Turn/Hazard Lamps Control (Monte Carlo)
Turn/Hazard Lamps Control (Monte Carlo)
I/P
G201 (2 of 2)
G201 (1 of 2)
EVAP and FTP
EVAP and FTP
Figure 3:

MESSAGE CENTER


Object Number: 798545  Size: FS
Master Electrical Component List
Indicator/Warning Message Description and Operation
Defogger Schematics
G113 (2 of 2)
DLC Schematics
Wiper/Washer System Schematics
Brake Warning Schematics