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, observe the scan tool Rear Closure Ajar Sw. parameter and the DIC display while opening and closing the liftgate. The parameter should change from Inactive to Active and the REAR ACCESS OPEN message should turn ON and OFF.
- If the parameter changes from Inactive to Active but the DIC REAR ACCESS OPEN display is always ON or always OFF, replace the IPC.