2010 GMC Savana 2500 Cargo Owner's Manual - Page 355

3. Attach the jack handle/jack handle extension and wheel wrench to the jack. 4. Place the jack under the vehicle, ahead of the rear bumper. Position the center lift point of the jack under the center of the spare tire and turn the handle clockwise to raise the jack until it lifts the secondary latch spring. 5. Keep raising the jack until the spare tire stops moving upward and is held firmly in place. This lets you know that the secondary latch has released. The spare tire is now balancing on the jack. 6-93