Liftgate Module (LGM)
WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
- Rear Defog Requested
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The scan tool displays Yes/No. When the rear window defogger switch is depressed, the HVAC control module sends a class 2 message to the LGM to enable the rear window defogger. The LGM enables the rear window defogger, which the scan tool displays as Yes.