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

Instrument Panel Cluster - 1 of 2


Object Number: 1493995  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Instrument Panel Cluster - 2 of 2
RADIO/CHIME, CHMSL, and PWR POST Fuses/Circuit Breakers
B+ Bus Bar
Ignition Switch, OFF/RUN/START, RUN/START, and START Bus Bars
I/P Fuse Block, START and TRANS Fuses/Circuit Breakers
RADIO/CHIME, CHMSL, and PWR POST Fuses/Circuit Breakers
I/P Fuse Block, IGN 4, and AUX RLY Fuses/Circuit Breakers
I/P Fuse Block, R-RR TRUCK, L-RR TRUCK, GAGES, and SIR Fuses/Circuit Breaker
Instrument Panel Cluster - 2 of 2
Park Lamps, Roof Marker Lamps
Headlights, Daytime Running Lamps (DRL)
Hazard and Turn Signal
Interior Dimming Lamps System
Data Link Connector, Power, and Ground - 2 of 2
Controlled/Monitored Subsystem References
G100 (L18)
Figure 2:

Instrument Panel Cluster - 2 of 2


Object Number: 1493996  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Fuel Senders
Instrument Panel Cluster - 1 of 2
Instrument Panel Cluster - 1 of 2
Brake Warning System Schematics - Hydraulic
Audible Warning
Module Power, Ground, Serial Data, and MIL
Instrument Panel Cluster - 1 of 2
Air Brakes Schematics
G103 - 2 of 2
Figure 3:

Fuel Gage


Object Number: 1493997  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Instrument Panel Cluster - 2 of 2
Splice Pack SP203 (L18/LB7/LG4)
Engine Data Sensors - Pressure and Temperature