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

Cell 81: Power Distribution, Ground Distribution and Trip Odometer Reset Switch


Object Number: 308554  Size: FS
Instrument Cluster Components
Instrument Cluster Circuit Description
Cell 81: I/P Lamp Dimmer Switch, Windshield Washer Solvent Level Switch, and Serial Data
Handling Electrostatic Discharge Sensitive Parts Notice
Power Distribution Schematics
Power Distribution Schematics
Power Distribution Schematics
Power Distribution Schematics
Interior Lights Dimming Schematics
Ground Distribution Schematics
Figure 2:

Cell 81: I/P Lamp Dimmer Switch, Windshield Washer Solvent Level Switch, and Serial Data


Object Number: 308555  Size: FS
Instrument Cluster Components
Instrument Cluster Circuit Description
Cell 81: Low Engine Coolant Level Switch, Engine Coolant Level Indicator Module, PCM and SDM
Cell 81: Power Distribution, Ground Distribution and Trip Odometer Reset Switch
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Power Distribution Schematics
Interior Lights Dimming Schematics
Interior Lights Dimming Schematics
Headlights Schematics
Data Link Connector Schematics
Ground Distribution Schematics
Ground Distribution Schematics
Figure 3:

Cell 81: Low Engine Coolant Level Switch, Engine Coolant Level Indicator Module, PCM and SDM


Object Number: 308556  Size: FS
Instrument Cluster Components
Instrument Cluster Circuit Description
Cell 81: Brake Fluid Level Indicator Switch and EBTCM
Cell 81: I/P Lamp Dimmer Switch, Windshield Washer Solvent Level Switch, and Serial Data
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
SIR Handling Caution
Ground Distribution Schematics
Ground Distribution Schematics
Ground Distribution Schematics
Figure 4:

Cell 81: Brake Fluid Level Indicator Switch and EBTCM


Object Number: 308557  Size: FS
Instrument Cluster Components
Instrument Cluster Circuit Description
Cell 81: Vehicle Speed Signal
Cell 81: Low Engine Coolant Level Switch, Engine Coolant Level Indicator Module, PCM and SDM
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Ground Distribution Schematics
Figure 5:

Cell 81: Vehicle Speed Signal


Object Number: 308558  Size: FS
Instrument Cluster Components
Instrument Cluster Circuit Description
Cell 81: Brake Fluid Level Indicator Switch and EBTCM
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice