Reference Information
Schematic Reference
Connector End View Reference
Component Connector End Views - Index
Description and Operation
- OnStar Description and Operation (without UI3) , or OnStar Description and Operation (UI3)
- Radio/Audio System Description and Operation (with IO5/IO6)
Electrical Information Reference
- Circuit Testing
- Connector Repairs
- Testing for Intermittent Conditions and Poor Connections
- Wiring Repairs
Scan Tool Reference
Control Module References for scan tool information
Special Tools
EL-49903 OnStar Antenna Diagnostic Tool Kit