Engine Exhaust - GMC Terrain 2018 Owner's Manual

192 Driving and Operating
If the vehicle is left parked while
running and the Remote Keyless
Entry (RKE) transmitter is outside
the vehicle, the vehicle will turn off
after one hour. If the vehicle is left
parked while running and the RKE
transmitter is inside, the vehicle will
turn off after two hours.
The timer will reset if the vehicle is
taken out of P (Park) while it is
running.

Engine Exhaust

Warning
Engine exhaust contains carbon
monoxide (CO), which cannot be
seen or smelled. Exposure to CO
can cause unconsciousness and
even death.
Exhaust may enter the vehicle if:
The vehicle idles in areas
with poor ventilation
(parking garages, tunnels,
deep snow that may block
underbody airflow or tail
pipes).
The exhaust smells or
sounds strange or different.
The exhaust system leaks
due to corrosion or damage.
The vehicle exhaust system
has been modified,
damaged, or improperly
repaired.
(Continued)
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.