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, observe the scan tool LGM Full Open Switch parameter while opening and closing the liftgate. The parameter should change between Active and Inactive.
- If the value does not change, perform the Circuit/System Testing.
- With the liftgate closed, command the liftgate to power open by pressing the liftgate handle switch. The liftgate should power open.
- If the liftgate releases, hums but does not power open, refer to Liftgate Description and Operation