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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Maintenance Indicator Reset

GM OIL LIFE SYSTEM - RESETTING
1. With the ignition key in RUN but the engine off, repeatedly push the trip/reset button until "OIL" is displayed on the Driver Information Center (DIC).
2. Once "OIL" is displayed, push and hold the trip/reset button for five seconds. The number will disappear and be replace by "100" indicating 100 percent oil life remaining.
3. Turn the key to OFF.
4. If the "change engine oil" message comes back on, the engine oil life monitor has not reset. Repeat the procedure.