GMC Sierra 2500 HD2022 Owner's Manual page 30

To enable the inner tailgate function, hold
the upper touchpad on the handle for
3 seconds until the tail lamps flash. The
inner tailgate can now be opened separately
from the outer tailgate.
Tailgate Step
Warning
To avoid personal injury, keep hands
away from the hinges when operating
the tailgate step.
With the primary and inner tailgates open,
the tailgate step can be lowered to access
the pickup bed.
Using the Step
Caution
When using the tailgate as a step, the
load rating is 170 kg (375 lb), which
includes a person and cargo. Overloading
the tailgate step can cause damage to
the tailgate system.
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.
Keys, Doors, and Windows
Do not place a load on top of the step when
using it as a load stop.
Using the Assist Handle
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