2012 GMC Sierra Owner's Manual - Page 55

Keys, Doors, and Windows To remove the tailgate: 2. With the tailgate about halfway open, lift the right edge of the tailgate from the lower pivot. On vehicles with the tailgate assist feature, raise the tailgate nearly all the way to the closed position prior to removing the left edge. 3. Move the tailgate to the right to release the left edge. Reverse this procedure to reinstall the tailgate. Make sure the tailgate is secure. 1. Raise the tailgate slightly, pull out and hold the cable retaining clip (A). Push the cable (C) up and off of the bolt (B). Repeat on the other side. 2-11 Vehicle Security This vehicle has theft-deterrent features; however, they do not make it impossible to steal. Anti-theft Alarm System This vehicle may have a content theft-deterrent alarm system. This is the security light. To arm the theft-deterrent system: 1. Open the door. 2. Lock the door with the Remote Keyless Entry (RKE) transmitter. The security light should flash.