GMC Sierra Denali 1500 2023 Owner's Manual page 31

30 Keys, Doors, and Windows
To lower the tailgate step, press the
button at the center of the step. Make
sure it lowers to the fully open position.
To close the tailgate step, lift it firmly.
Make sure that both side latches are
engaged.
Do not place a load on top of the step when
using it as a load stop.
Using the Assist Handle
The assist handle helps with entering the
pickup box. To use:
1. Lift up on the handle until it locks in the
open position.
2. To return the assist handle, pull the
release lever toward the ball end of the
handle and push the handle back to the
closed position.
Applying Loads to Tailgates
Caution
Do not put ramp loads on the inner
tailgate alone. Damage to the inner
tailgate may occur.
Preferred Method