Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Onstar, Control Module Outputs

OnStar, Control Module Outputs

- Control module, OnStar (673)
- Telephone mute (355/635)
- Line output, right/left channels +/- (353/635)
- Power supply, Control button unit, OnStar (469)
- Ground, Control button unit, OnStar (469)
- Indicator signal (red), Control button unit, OnStar (469)
- Indicator signal (green), Control button unit, OnStar (469)
- Communication and diagnostic lead (445)
- Antenna, mobile telephone (627)