Circuit/System Verification
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON, press the rear window defogger switch. Verify the rear window defogger turns ON and the rear window becomes warm.
- If the rear window defogger does not turn on, refer to Rear Window Defogger Malfunction .
- Verify both the left and right outside mirror glass become warm.