Brake Assist - GMC 2018 Acadia Denali Owner's Manual

then the EPB is only partially
applied or there is a problem with
the EPB. A DIC message will
display. Release the EPB and try to
apply it again. If the light does not
come on, or keeps flashing, have
the vehicle serviced. Do not drive
the vehicle if the light is
flashing. See your dealer. See
Electric Parking Brake Light 0 131.
If the light is on, press the EPB
switch and hold it. Continue to hold
the switch until the light remains
on. If the light remains on, see
your dealer.
If the EPB is applied while the
vehicle is moving, the vehicle will
decelerate as long as the switch is
pressed. If the switch is pressed
until the vehicle comes to a stop,
the EPB will remain applied.
The vehicle may automatically apply
the EPB in some situations when
the vehicle is not moving. This is
normal, and is done to periodically
check the correct operation of the
EPB system.
If the EPB fails to apply, block the
rear wheels to prevent vehicle
movement.
EPB Release
To release the EPB:
1. Place the ignition in the ACC/
ACCESSORY or ON/
RUN mode.
2. Apply and hold the brake
pedal.
3. Press the EPB switch
momentarily.
The EPB is released when the
light is off.
If the light is on, release the EPB
by pressing and holding the EPB
switch. Continue to hold the switch
until the light is off. If either light
stays on after release is attempted,
see your dealer.
Driving and Operating
Caution
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.
Automatic EPB Release
The EPB will automatically release if
the vehicle is running, placed into
gear, and an attempt is made to
drive away. Avoid rapid acceleration
when the EPB is applied, to
preserve parking brake lining life.

Brake Assist

The Brake Assist feature is
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
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