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

Power/Ground Distribution, Instrument Cluster


Object Number: 483604  Size: FS
Instrument Cluster Circuit Description
Serial Data, Turn Signal Switch and Headlamp Switch
Instrument Panel, Gages, and Console Component Views
Handling ESD Sensitive Parts Notice
Fuse Block, BCM, Cluster, Radio and DLC
Fuse Block, Outside Rearview Mirrors and PCM
Fuse Block, UAWJB Radio and Cluster
Fuse Block, BCM, Cluster, Radio and DLC
Fuse Block, Outside Rearview Mirrors and PCM
Fuse Block, UAWJB Radio and Cluster
G201)
G203
Fuse Block, UAWJB, PCM and BCM
Figure 2:

Serial Data, Turn Signal Switch and Headlamp Switch


Object Number: 483607  Size: FS
Instrument Cluster Circuit Description
PCM, Engine Coolant Level Indicator Module, Windshield Washer Solvent Level Switch
Power/Ground Distribution, Instrument Cluster
Instrument Panel, Gages, and Console Component Views
Cluster, Headlamp Switch, Automatic Headlamp Control Module, Side Reapeater and Rear Turn Lamps
Headlamp Switch, Cluster, HVAC, Rear Radio Control Module, Electronic Traction Control and Fog Lamp Assembly
Headlamps, Headlamp Switch, Headlamp Dimmer Switch and BCM
DLC Schematic
Handling ESD Sensitive Parts Notice
Figure 3:

PCM, Engine Coolant Level Indicator Module, Windshield Washer Solvent Level Switch


Object Number: 330889  Size: FS
Instrument Cluster Circuit Description
Brake Fluid Level Switch
Serial Data, Turn Signal Switch and Headlamp Switch
Instrument Panel, Gages, and Console Component Views
SIR Caution
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
G100, G117 and G119
G100, G117 and G119
G200 ( 1 of 2)
Figure 4:

Brake Fluid Level Switch


Object Number: 483616  Size: FS
Instrument Cluster Circuit Description
Serial Data
PCM, Engine Coolant Level Indicator Module, Windshield Washer Solvent Level Switch
Handling ESD Sensitive Parts Notice
Instrument Panel, Gages, and Console Component Views
G203
Figure 5:

Serial Data


Object Number: 622957  Size: FS
Instrument Panel, Gages, and Console Component Views
Instrument Cluster Circuit Description
Brake Fluid Level Switch
Handling ESD Sensitive Parts Notice