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)

Or, hide this message: temporarily or permanently

Programming and Relearning


Removing The BACK-UP Fuse in the Under-hood Fuse/relay Box:




After performing all necessary repairs, remove the "BACK UP" fuse (7.5A) from the under-hood fuse/relay box for 10 seconds. This will reset the Engine Control Module fault code memory.

NOTE: Disconnecting the "BACK UP" fuse (7.5A) also cancels the anti-theft/radio presets and clock settings. Make note of the presets (and anti-theft radio codes if so equipped) before removing the fuse.