GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2007 🢒 HHR 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Instrument Cluster Schematics
Figure 1:

Power, Ground, DIC, Illumination, MIL, and Security Indicator
Object Number: 1769495 Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Control Module References
Ambient Air Temperature Sensor, EOP Sensor, Fuel Level Sensor, and Indicators
Body Control Module - RUN/CRANK and HVAC Relays, I/P IGN, BCM3, WPR, AIR BAG, EPS/STR WHL CNTRL and HVAC/IP IGNITION Fuses
Body Control Module - RUN/CRANK and HVAC Relays, I/P IGN, BCM3, WPR, AIR BAG, EPS/STR WHL CNTRL and HVAC/IP IGNITION Fuses
G201, G203
Dimmer Switch, Radio, Hazard, Fog Lamp, Steering Wheel Controls and Rear Wiper/Washer Switches
Power, Ground, MIL and DLC
Power, Ground, MIL and DLC
Content Theft Deterrent
DLC Power, Ground, and Low Speed GMLAN
Figure 2:

Ambient Air Temperature Sensor, EOP Sensor, Fuel Level Sensor, and Indicators
Object Number: 1769498 Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Control Module References
Power, Ground, DIC, Illumination, MIL, and Security Indicator
High Speed GMLAN
DLC Power, Ground, and Low Speed GMLAN
Engine Data Sensors 5-Volt and Low Reference
Engine Data Sensors 5-Volt and Low References