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

Power, Ground, and Class 2


Object Number: 792023  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
PCM Signals
ALDL, PCM BATT, IP, ABS Fuses
Washer Fluid Level Switches
Engine Coolant Level Indicator
Class 2 Signals
G200
G200
Battery Feed to Fuse Block - Rear
IGN 1 Fuse
Figure 2:

PCM Signals


Object Number: 783648  Size: FS
Master Electrical Component List
Indicator/Warning Message Description and Operation
PCM and IPM Signals
Power, Ground, and Class 2
Class 2 Serial Data Line (LH Drive) (1 of 2)
Fuel Controls-Fuel Pump and EVAP Controls
Figure 3:

PCM and IPM Signals


Object Number: 783649  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
DIM, RIM, PCM, and SDM Signals
PCM Signals
Module Power, Ground, Serial Data, and MIL
Class 2 Serial Data Line (LH Drive) (1 of 2)
Park Brake System
Brake Warning System
G106 and G108
Traction Control Switch and ABS Indicators
Battery Feed to Fuse Block - Rear
IGN 1 Fuse
Figure 4:

DIM, RIM, PCM, and SDM Signals


Object Number: 642220  Size: FS
Master Electrical Component List
Indicator/Warning Message Description and Operation
Driver Information Center (DIC)
PCM and IPM Signals
Right Exterior Lights
Class 2 Serial Data Line (LH Drive) (2 of 2)
Right Exterior Lights
Figure 5:

Driver Information Center (DIC)


Object Number: 792024  Size: FS
Master Electrical Component List
Driver Information Center (DIC) Description and Operation
DIM, RIM, PCM, and SDM Signals
G202 1 of 3
G202 1 of 3
G200
G200