Circuit/System Verification
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON, vehicle in PARK, cover the front light sensor with a towel or other suitable item. Shine a flashlight at the rear light sensor while observing the inside rearview mirror face. The inside rearview mirror face should dim.
- Place the transmission in REVERSE. The inside rearview mirror face should transition from dim to bright.
- If the mirror does not transition between the bright and dim states, refer to Inside Rearview Mirror Dimming Malfunction .
- Vehicle in PARK, the outside rearview mirror face should dim.
- Place the transmission in REVERSE. The outside rearview mirror face should transition from dim to bright.
- If the mirror does not transition between the bright and dim states, refer to Outside Rearview Mirror Dimming Malfunction .