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

Power, Ground, Serial Data and MIL


Object Number: 1458640  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Control Module References
Gages and Engine Oil Pressure (EOP)
B+ Bus Underhood Fuse Block
Ignition Switch - ACCY/RUN and RUN/START Bus Bar and IGN B Fuse
BCK/UP REV LK OUT, BTSI, and IGN E Fuses
BCK/UP REV LK OUT, BTSI, and IGN E Fuses
Data Link Connector Schematics
Module Power, Ground, Serial Data and MIL
G103, G104
Figure 2:

Gages and Engine Oil Pressure (EOP) Sensor


Object Number: 1458641  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Control Module References
Indicator and DIC Controls
Power, Ground, Serial Data and MIL
Data Link Connector Schematics
Figure 3:

Indicator and DIC Controls


Object Number: 1458642  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Control Module References
Fuel Gage
Gages and Engine Oil Pressure (EOP)
Turn Signal Lamps
SIR Caution for Zoning
G200
G200
Figure 4:

Fuel Gage


Object Number: 1458644  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Control Module References
Indicator and DIC Controls
Fuel Controls - EVAP Controls
Data Link Connector Schematics