GMC Sierra Quiz
Driving and Operating

Running the Vehicle While Parked

In this manual: Driving and Operating
Introduction — 6In Brief — 46Seats and Restraints — 48Storage — 7Instruments and Controls — 75Lighting — 22Infotainment System — 22Climate Controls — 7Driving and Operating — 77Vehicle Care — 79Service and Maintenance — 26Technical Data — 8Customer Information — 25OnStar — 25Keys, Doors, and Windows — 38
~1min read

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

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 on page 9‑36.

Follow the proper steps to be sure the vehicle will not move. See Shifting Into Park on page 9‑33.

If pulling a trailer, see Driving Characteristics and Towing Tips on page 9‑80.

Test yourself

A quick GMC Sierra quiz: every answer comes with an explanation and a link to the manual page.