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

Powers and Grounds


Object Number: 735980  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Gages and MIL
BODY 3 and INADVERT Fuses
LAMPS and IGN 1 Fuses
BATT 3 and Ignition Switch (1 of 2)
WIPERS, ACC, and CLUSTER Fuses
RLY IGN 1 Fuse
IGN 0 BODY Fuse
G203
Figure 2:

Gages


Object Number: 735993  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Warning Indicator Lamps
Powers and Grounds
Power, Ground, and Class 2 (1 of 2)
Figure 3:

Indicators


Object Number: 735996  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Inputs and Outputs (1 of 2)
Gages and MIL
Indicators and Traction Control Switch
Brake Warning System
Pass-Key® II
Module Power, Ground, Serial Data, and MIL
Power, Ground, and Class 2 (1 of 2)
G102
Figure 4:

Message Display Signals (1 of 2)


Object Number: 736000  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Inputs and Outputs (2 of 2)
Warning Indicator Lamps
Electronic PRNDL Signals
Steering Wheel Control Switch
Release Systems
Audible Warning
Engine Cooling
02E - Fluid Level Switch Schematic
Module, Pump, and Sensor Circuits w/CE1
w/o CE1
Figure 5:

Message Display Signals (2 of 2)


Object Number: 736005  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
DIC Signals
Inputs and Outputs (1 of 2)
Headlamp Dimmer Switch, Ambient Light Sensor, and Twilight Sentinal
Turn Signal Lamps
Console Backlighting
Front Door Backlighting
Headlamp Dimmer Switch, Ambient Light Sensor, and Twilight Sentinal
Headlamp Switch and Headlamp Control
Headlamp Switch
Instrument Panel Backlighting
Headlamp Switch
Headlamp Switch and Park Lamp Control
Headlamp Dimmer Switch, Ambient Light Sensor, and Twilight Sentinal
Fog Lamps
Figure 6:

DIC Signals


Object Number: 715971  Size: FS
Master Electrical Component List
Driver Information Center (DIC) Description and Operation
Inputs and Outputs (2 of 2)
Release Systems
Instrument Panel Backlighting
Instrument Panel Backlighting
G205
G201