GMC 2008 Acadia - Manual (Page 117)

Parking Brake
To set the parking brake,
push down the parking
brake pedal down
with your left foot.
If the ignition is on, the brake system warning light will
come on. See Brake System Warning Light on
page 3-47.
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 with your right foot. Push down momentarily
on the parking brake pedal with your left foot until you
feel the pedal release, then 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
Towing a Trailer on page 4-30.
2-35