Running The Vehicle While Parked - Chevrolet 2009 Colorado Owner's Manual

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.
CAUTION:
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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 on page 2-35.
2-36
CAUTION:
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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 it is
on fairly level ground, always set the parking
brake and move the automatic transmission shift
lever to P (Park), or the manual transmission shift
lever to Neutral.