GMC 2001 Denali Owner's Manual page 276

The tools you'll be using include the bottle jack (A), the
wheel blocks (B), the jack handle (C), the jack handle
extensions (D), and the wheel wrench (E).
If the flat tire is on a rear tire of the vehicle, you'll need
to use both jack handle extensions.
5-22
Attach the wheel wrench to the jack handle extensions
(as needed). Attach the jack handle to the jack.