Main components, Telematics
4D
5D
CV
- UHP control module (721)
- OnStar control module (673)
- Main instrument unit, MIU (540)
- Entertainment head unit, EHU (353)
- Steering wheel controls (633)
- Microphone (634)
- OnStar control panel (469)
- Electrical center 22 in the instrument panel (IPEC)
- Rear electrical center (701)
- Antenna, GSM/GPS (627)