Parking brake, Brake assist, Parking brake -30 brake assist -30 – GMC 2011 Acadia User Manual

Page 302

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GMC Acadia/Acadia Denali Owner Manual - 2011

9-30

Driving and Operating

Parking Brake

To set the parking brake, hold the
regular brake pedal down, then
push the parking brake pedal down.

If the ignition is on, the brake
system warning light will come on.
See Brake System Warning Light on
page 5‑20
.

Notice: Driving with the parking
brake on can overheat the brake
system and cause premature
wear or damage to brake system
parts. Make sure that the parking
brake is fully released and the
brake warning light is off before
driving.

To release the parking brake, hold
the regular brake pedal down, then
push down momentarily on the
parking brake pedal until you feel
the pedal release. Slowly pull your
foot up off the park brake pedal.
If the parking brake is not released
when you begin to drive, the brake
system warning light will be on and
a chime will sound warning you that
the parking brake is still on.

If you are towing a trailer and
are parking on a hill, see Driving
Characteristics and Towing Tips on
page 9‑47
.

Brake Assist

This vehicle has a brake assist
feature designed to assist the
driver in stopping or decreasing
vehicle speed in emergency
driving conditions. This feature
uses the stability system hydraulic
brake control module to supplement
the power brake system under
conditions where the driver has
quickly and forcefully applied the
brake pedal in an attempt to quickly
stop or slow down the vehicle.
The stability system hydraulic brake
control module increases brake
pressure at each corner of the
vehicle until the ABS activates.
Minor brake pedal pulsation or
pedal movement during this time
is normal and the driver should
continue to apply the brake pedal
as the driving situation dictates.
The brake assist feature will
automatically disengage when
the brake pedal is released or
brake pedal pressure is quickly
decreased.

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