2009 GMC Savana Van Owner's Manual - Page 328

Rear Position Rear Alternative Position (Diesel Vehicles) 4. Position the jack under the vehicle as shown. The front position jacking point is on the frame. The rear position jacking point is on the rear axle. If the exhaust system interferes in the jack location in the rear axle, such as in Diesel vehicles, place the jack (A) on the rear axle between the axle housing and the shock absorber bracket in order to avoid any interference with the exhaust pipe (B). 5-86