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

Windows: Service Precautions

CAUTION:
^ Disconnect the battery before removing and installing the GEM or its connectors. Failure to do so will result in the GEM storing many erroneous Diagnostic Trouble Codes (DTCs) and exhibiting erratic operation after installation.
^ Be careful when probing the CJB, battery junction box or any connectors. Damage will result to the connector receptacle if the probe being used is too large.
^ Electronic modules are sensitive to static electrical charges. If exposed to these charges, damage may result