Reference Information
WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
Schematic Reference
- OnStar/Telematics Schematics
- Radio/Navigation System Schematics (IO3)Radio/Navigation System Schematics (IO5 or IO6)
Connector End View Reference
COMPONENT CONNECTOR END VIEWS - INDEX
Description and Operation
- OnStar Description and Operation
- Radio/Audio System Description and Operation (IO5/IO6)Radio/Audio System Description and Operation (IO3)
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