Engine Exhaust - GMC 2010 Yukon/Yukon XL Owner's Manual

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.
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WARNING: (Continued)
If unusual fumes are detected or if it is suspected
that exhaust is coming into the vehicle:
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.
(Continued)
The vehicle s exhaust system has been
modified, damaged or improperly repaired.
There are holes or openings in the
vehicle body from damage or after-market
modifications that are not completely sealed.
Drive it only with the windows
completely down.
Have the vehicle repaired immediately.