Park Brake and P (Park) Mechanism Check
WARNING
When you are doing this check, the vehicle could begin to move. You or others could be injured and property could be damaged. Make sure there is room in front of the vehicle in case it begins to roll. Be ready to apply the regular brake at once should the vehicle begin to move.
Park on a fairly steep hill, with the vehicle facing downhill. Keeping your foot on the regular brake, set the parking brake.
○ To check the parking brake's holding ability: With the engine running and the
transmission in N (Neutral), slowly remove foot pressure from the regular brake
pedal. Do this until the vehicle is held by the parking brake only.
○ To check the P (Park) mechanism's holding ability: With the engine running, shift
to P (Park). Then release the parking brake followed by the regular brake.
Contact your dealer if service is required.
See also:
Door Ajar Messages
DRIVER DOOR OPEN
This message displays and a chime sounds if the driver door is not fully closed and the vehicle is shifted out of P (Park). Stop and turn off the vehicle, check the door for obstruct ...
How OnStar Service Works
Automatic Crash Response, Emergency Services, Crisis Assist, Stolen Vehicle Assistance, Vehicle Diagnostics, Remote Door Unlock, Roadside Assistance, Turn-by-Turn Navigation, and Hands-Free Calling ar ...
Power Liftgate
On vehicles with a power liftgate, the vehicle must be in P (Park) to operate.
The taillamps flash when the power liftgate moves.
WARNING
You or others could be injured if caught in the path of th ...