WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Lifting Rear Of Vehicle With Floor Jack
Courtesy of GENERAL MOTORS CORP.
Lift the rear of the vehicle by placing the floor jack lift pad at the center of the rear suspension.