GMC 2010 Savana 1500 Cargo Owner's Manual page 344

To access the equipment, remove the retaining wing
bolt and lift it out of the mounting bracket.
6-82
The tools you will be using include the jack (A), jack
handle (B), hoist extension (C), jack handle
extension (D), and the wheel wrench (E).
The spare tire is mounted in the rear underbody of
the vehicle.
You will use the hoist extension, the jack handle
extensions and the wheel wrench to remove the
underbody-mounted spare tire.