Reference Information
Schematic Reference:
Connector End View Reference:
COMPONENT CONNECTOR END VIEWS - INDEX .
Description and Operation:
- OnStar Description and Operation
- Radio/Audio System Description and Operation (with IO5/IO6)
- Radio/Audio System Description and Operation (with IOA/IP1)
Electrical Information Reference:
- Circuit Testing
- Connector Repairs
- Testing for Intermittent Conditions and Poor Connections
- Wiring Repairs
Scan Tool Reference:
Refer to Control Module References for scan tool information.
Special Tools
EL-49903 OnStar Antenna Diagnostic Tool Kit, refer to Special Tools and Equipment .