GMC Defense 2006 Owner's Manual Supplement page 71

15. Tighten the nuts firmly
In-Cab Tire Carrier
A B C D
The tools you will be using include the jack handle
(A), the jack handle extensions (B), the wheel wrench
(C), the wheel wrench extension (D) and the wheel
blocks (E).
5-28
in a crisscross
sequence as shown
by turning the
wheel wrench
clockwise.
3. Ensure that the vehicle's transmission is in park
4. Set the parking brake.
E
5. Using the wheel blocks, block the opposite tire
1. Remove the wheel
blocks from the tool
bag. Then, lift the wheel
block as shown to lock
it into place.
2. Ensure that the vehicle
is parked on a level
surface.
and the transfer case in NOT in neutral.
that is being changed.