Parked; Automatic Transmission; Running The Vehicle While Parked - GMC 2016 Acadia User Manual

Warning (Continued)
There are holes or openings
in the vehicle body from
damage or aftermarket
modifications that are not
completely sealed.
If unusual fumes are detected or
if it is suspected that exhaust is
coming into the vehicle:
Drive it only with the
windows completely down.
Have the vehicle repaired
immediately.
Never park the vehicle with the
engine running in an enclosed
area such as a garage or a
building that has no fresh air
ventilation.
Running the Vehicle
While Parked
It is better not to park with the
engine running.
If the vehicle is left with the engine
running, follow the proper steps to
be sure the vehicle will not move.
See Shifting Into Park 0 208 and
Engine Exhaust 0 210.
If parking on a hill and pulling a
trailer, see Driving Characteristics
and Towing Tips 0 233.
Driving and Operating
Automatic
Transmission
P : This position locks the front
wheels. It is the best position to use
when starting the engine because
the vehicle cannot move easily.
Warning
It is dangerous to get out of the
vehicle if the shift lever is not fully
in P (Park) with the parking brake
firmly set. The vehicle can roll.
211
(Continued)