Running the Vehicle While Parked

It is better not to park with the engine running. But if you ever have to, here are some things to know.

Idling a vehicle in an enclosed area with poor ventilation is dangerous. EngineWARNING
Idling a vehicle in an enclosed area with poor ventilation is dangerous. Engine exhaust may enter the vehicle. Engine exhaust contains Carbon Monoxide (CO) which cannot be seen or smelled.

It can cause unconsciousness and even death. Never run the engine in an enclosed area that has no fresh air ventilation.

For more information, see Engine Exhaust .

It can be dangerous to get out of the vehicle if the automatic transmission shiftWARNING
It can be dangerous to get out of the vehicle if the automatic transmission shift lever is not fully in P (Park) with the parking brake firmly set. The vehicle can roll.

Do not leave the vehicle when the engine is running unless you have to. If you have left the engine running, the vehicle can move suddenly. You or others could be injured. To be sure the vehicle will not move, even when you are on fairly level ground, always set the parking brake and move the shift lever to P (Park).

Follow the proper steps to be sure the vehicle will not move.

See Shifting Into Park .

If parking on a hill and pulling a trailer, see Driving Characteristics and Towing Tips .

    See also:

    Horn
    Press near the horn symbols or press on the steering wheel pad to sound the horn. ...

    Storing Button Memory Positions
    To save positions into Button Memory: 1. Adjust the driver seat, seatback recliner, and both outside mirrors to the desired driving positions. 2. Press and hold MEM (Memory) and “1” at t ...

    Add-on Electrical Equipment
    The OnStar system is integrated into the electrical architecture of the vehicle. Do not add any electrical equipment. See Add-On Electrical Equipment. Added electrical equipment may interfer ...