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

Cell 81:Power/Ground Distribution, Instrument Cluster and DID


Object Number: 330882  Size: FS
Instrument Cluster Circuit Description
Cell 81: Serial Data, Turn Signal Switch and Headlamp Switch
Power Distribution Schematics
Ground Distribution Schematics
Ground Distribution Schematics
Fuse Block Schematics
Power Distribution Schematics
Fuse Block Schematics
Power Distribution Schematics
Fuse Block Schematics
Power Distribution Schematics
Handling ESD Sensitive Parts Notice
Figure 2:

Cell 81: Serial Data, Turn Signal Switch and Headlamp Switch


Object Number: 330886  Size: FS
Instrument Cluster Circuit Description
Cell 81: PCM, Engine Coolant Level Indicator Module, Windshield Washer Solvent Level Switch
Cell 81:Power/Ground Distribution, Instrument Cluster and DID
Interior Lights Dimming Schematics
Handling ESD Sensitive Parts Notice
Instrument Panel, Gages, and Console Component Views
Data Link Connector Schematics
Cell 110: Turn Signal Switch, CHMSL Lamp
Headlamps, Dimmer/Headlamp Switches
Figure 3:

Cell 81: PCM, Engine Coolant Level Indicator Module, Windshield Washer Solvent Level Switch


Object Number: 330889  Size: FS
Instrument Cluster Circuit Description
Cell 81: Brake Fluid Level Switch
Cell 81: Serial Data, Turn Signal Switch and Headlamp Switch
Ground Distribution Schematics
Ground Distribution Schematics
Ground Distribution Schematics
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
SIR Handling Caution
Instrument Cluster Components
Figure 4:

Cell 81: Brake Fluid Level Switch


Object Number: 330892  Size: FS
Instrument Cluster Circuit Description
Cell 81: Serial Data
Cell 81: PCM, Engine Coolant Level Indicator Module, Windshield Washer Solvent Level Switch
Ground Distribution Schematics
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Instrument Cluster Components
Figure 5:

Cell 81: Serial Data


Object Number: 330894  Size: FS
Instrument Cluster Circuit Description
Cell 81: Brake Fluid Level Switch
Handling ESD Sensitive Parts Notice