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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Electronic Component Replacement

1. Before servicing electronic components, ensure ignition is "OFF" and disconnect the battery ground.

NOTE: Before removing battery ground, access trouble codes. Electronic Control Module (ECM) memory will be erased if ground cable is removed.

NOTE: Before connecting battery ground, ensure ignition is "OFF."

2. Fuel and Engine Control System wiring should be at least 4 inches away from ignition wires.