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

Power, Grounds, DLC and Odometer


Object Number: 688529  Size: FS
Master Electrical Component List original
Instrument Cluster Description and Operation
Gages, Fuel Level Sensor and DLC
BTSI, Turn Signals/CORN LPS, Air Bag, Cluster, PCM/BCM/Crank/IGN Fuses
INADV POWER BUS/RAP, BCM, RADIO/HVAC/RFA/CLUSTER/DATA LINK, CIGAR LTR/AUXPOWER/POWER DROP Fuses and RAP Relay
INADV POWER BUS/RAP, BCM, RADIO/HVAC/RFA/CLUSTER/DATA LINK, CIGAR LTR/AUXPOWER/POWER DROP Fuses and RAP Relay
IGN 2, IGN 0/Cluster/PCM/BCM, Crank/Signal/BCM/Cluster Fuses
01 W-Car Olds: Data LInk Communications (Data LInk Connector)
Ground G203
Figure 2:

Gages, Fuel Level Sensor and DLC


Object Number: 688531  Size: FS
Master Electrical Component List original
Instrument Cluster Description and Operation
Indicators, DLC, Engine Oil Level and Engine Oil Pressure Switches
Power, Grounds, DLC and Odometer
01 W-Car Olds: Engine Controls (Fuel Tank Inputs)
A/C, TP, MAP, ECT and IAT Sensors
01 W-Car Olds: Data LInk Communications (Data LInk Connector)
Figure 3:

Indicators, DLC, Engine Oil Level and Engine Oil Pressure Switches


Object Number: 716833  Size: FS
Master Electrical Component List original
Indicator/Warning Message Description and Operation
Illumination Lamps, and Indicators,
Gages, Fuel Level Sensor and DLC
01 W-Car Olds: Data LInk Communications (Data LInk Connector)
01 W-Car Olds: Engine Cooling Schematics (Cooling Fan)
01 W-Car Olds: Wiper Washer System (Power, Grounds, Switch and Motor)
01 W-Car Olds: Engine Controls (Powers, Grounds and DLC)
01 W-Car Olds: Hydraulic Brakes (Brake Warning Schematics)
Figure 4:

Illumination Lamps, and Indicators,


Object Number: 688534  Size: FS
Master Electrical Component List original
Indicator/Warning Message Description and Operation
Gages, Fuel Level Sensor and DLC
Fused Distribution and Grounds
Front Turn Signal Lamps, Turn Signal Switch, Turn Signal Indicators and Hazard Warning Switch
I/P Lamp Dimmer Switch
01 W-Car Olds: Data LInk Communications (Data LInk Connector)
Headlamps, Headlamp Switch and High Beam Indicator
Ground G201