Chevrolet Tahoe 2015 Owner's Manual page 56

The liftgate cannot be set below a
minimum programmable height.
If there is no light flash or sound,
then the height adjustment may be
too low.
Manual Operation
Select OFF to manually operate the
liftgate. See Manual Liftgate at the
beginning of this section.
Hands-Free Operation
If equipped with Hands-Free Vehicle
Access, the liftgate may be opened
via a kicking motion beneath the
rear bumper.
If the RKE transmitter is not within
1m (3 ft) of the liftgate during
hands-free operation, the liftgate will
not open.
Keys, Doors, and Windows
To operate the hands-free system:
1. Under the center of the rear
bumper, kick your foot up in one
swift motion and then pull
it back.
2. Do not touch the liftgate until it
has fully opened.
Keep the RKE transmitter away
from the rear of the vehicle or turn
the liftgate mode to OFF when
cleaning or working near the rear
bumper to avoid accidental opening
of the liftgate.
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