Engine Exhaust; Running Your Engine While You Are Parked - GMC Envoy Owner's Manual

Engine Exhaust

CAUTION:
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Engine exhaust can kill. It contains the gas
carbon monoxide (CO), which you cannot see or
smell. It can cause unconsciousness and death.
You might have exhaust coming in if:
•
Your exhaust system sounds strange
or different.
•
Your vehicle gets rusty underneath.
•
Your vehicle was damaged in a collision.
•
Your vehicle was damaged when driving
over high points on the road or over
road debris.
•
Repairs were not done correctly.
•
Your vehicle or exhaust system had been
modified improperly.
If you ever suspect exhaust is coming into
your vehicle:
•
Drive it only with all the windows down to
blow out any CO; and
•
Have your vehicle fixed immediately.
2-34
Running Your Engine While
You Are 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 the engine with the climate control
system off could allow dangerous exhaust into
your vehicle. See the earlier caution under
Engine Exhaust on page 2-34.
Also, idling in a closed-in place can let deadly
carbon monoxide (CO) into your vehicle even
if the climate control fan is at the highest
setting. One place this can happen is a garage.
Exhaust — with CO — can come in easily.
NEVER park in a garage with the
engine running.
Another closed-in place can be a blizzard.
See Winter Driving on page 4-39.