Circuit/System Verification
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. 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 indicator illuminates.
- If the rear window defogger indicator does not illuminate, refer to Rear Window Defogger Malfunction .
- Verify both the left and right outside mirror glass become warm.