Opening the Liftgate When There Is an Electrical Failure (Rendezvous)
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
Use a small flat-bladed tool to remove the plug from the liftgate trim panel.
Fig 1: View Of Access Hole Plug
Courtesy of GENERAL MOTORS CORP.
Inset a flat-bladed tool in to the access hole and rotate the liftgate latch clockwise to release.