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

Power


Object Number: 680684  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Data Link Connector (DLC), VCM and Engine Oil Pressure Gauge Sensor
Ign START, RUN and ACC Bus Bar
RDO BAT and AUX PWR Fuses
ILLUM and PARK LP Fuses
Hazard Switch, TURN, and HAZ LP Fuses
Power and Ground
RDO BAT and AUX PWR Fuses
Data Link Connector (DLC), VCM and Engine Oil Pressure Gauge Sensor
Data Link Connector (DLC), VCM and Engine Oil Pressure Gauge Sensor
Ground and VCM
Ground and VCM
Ground and VCM
Ground and VCM
Ground and VCM
Figure 2:

Data Link Connector (DLC), VCM and Engine Oil Pressure Gauge Sensor


Object Number: 680686  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Ground and VCM
Power
Splice Pack SP201 and Modules
Power
Power
Power
Figure 3:

Ground and VCM


Object Number: 680687  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Data Link Connector (DLC), VCM and Engine Oil Pressure Gauge Sensor
Power
Power
Power
Power
SP203
G103 and G105
G103 and G105
Vehicle Speed Outputs and Overhead Console Link
G103 and G105
G200 and G201
G103 and G105
G103 and G105