Operation CHARM: Car repair manuals for everyone.
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)

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Central Locking Button




Central Locking Button







The central lock button in the center console provides a momentary ground input signal to the GM. This input initiates a single lock for each door and the trunk. The fuel filler flap remains unlocked for refueling purposes.

If a door is manually opened while centrally locked, the remaining doors stay locked.

The opened door can be re-locked when closed by manually locking or pushing the central button twice. This allows the locks of the remaining doors to be re-synchronized again.

The central button is now located in a combined housing with the hazard flasher switch.