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

Power, Ground, and Illumination


Object Number: 1217875  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Indicators
Underhood Fuse Block Fuse - IBCM 1 Fuse, Body Control Module Fuses - AIRBAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IGN Sensor, RADIO Fuses and the Ignition Switch
Underhood Fuse Block Fuse - IBCM 1 Fuse, Body Control Module Fuses - AIRBAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IGN Sensor, RADIO Fuses and the Ignition Switch
Underhood Fuse Block Fuse - IBCM 1 Fuse, Body Control Module Fuses - AIRBAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IGN Sensor, RADIO Fuses and the Ignition Switch
Underhood Fuse Block Fuse - IBCM 1 Fuse, Body Control Module Fuses - AIRBAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IGN Sensor, RADIO Fuses and the Ignition Switch
Underhood Fuse Block Fuse - IBCM 1 Fuse, Body Control Module Fuses - AIRBAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IGN Sensor, RADIO Fuses and the Ignition Switch
Dimmer Switch Inputs and Instrument Panel Lighting
PCM, Power, Ground, MIL and Serial Data
Power, Ground, Serial Data, and MIL
Vehicle Theft Deterrent (VTD) System
G201
Figure 2:

Indicators


Object Number: 1217876  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Power, Ground, and Illumination
Low Speed Serial Data
Power, Ground and High Speed Serial Data