Parking Brake - GMC 2002 Yukon XL Owner's Manual

Tow/Haul Mode Selector Button
Your vehicle is equipped with a tow/haul mode. The
selector button is located on the end of the column shift
lever. You can use this feature to assist when towing or
hauling a heavy load. See "Tow/Haul Mode" in the
Index for more information.
The tow/haul mode also interacts with the Autoride
feature, if your vehicle is so equipped, to enhance the
ride when trailering or with a loaded vehicle. See
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"Autoride " in the Index.
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Parking Brake

To set the parking brake, hold the regular brake pedal
down with your right foot. Push down the parking brake
pedal with your left foot.
If the ignition is on, the brake system warning light
will flash. A chime will activate when the parking brake
is applied and the vehicle is moving at least 3 mph
(5 km/h) for at least three seconds.
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To release the parking brake, hold the regular brake
pedal down. Pull the bottom edge of the lever, located
above the parking brake pedal, marked BRAKE
RELEASE, to release the parking brake.