Operation CHARM: Car repair manuals for everyone.

Courtesy Lamp: Service Precautions

CAUTION:
^ Before removing and installing the GEM or its connectors, disconnect the battery. Failure to follow this caution will result in the GEM storing many erroneous Diagnostic Trouble Codes (DTCs) and may result in the GEM exhibiting erratic operation after installation.
^ Be careful when probing the fuse junction panel, power distribution box or any connectors. Damage will result to the connector receptacle if the probe or terminal being used is too large.
^ Electronic modules are sensitive to electrical charges. If exposed to these charges, damage may result.