Liftgate Module (LGM)/Endgate Module (EGM)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
- Defog Relay Voltage
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The scan tool displays the voltage supplied to the rear defogger grid.
- Rear Defog Requested
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The scan tool displays Yes/No. When the window defogger switch is pressed, a request from HVAC control module is sent to LGM. This parameter indicates if the request was received.
- Rear Defog Commanded
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When the window defogger switch is pressed, a request from the HVAC control module is sent to the EGM. This parameter indicates if the request was received and executed. "Suspend" is displayed when the end-gate glass is open.