GMC Sierra Denali Owner's Manual page 107

Parking Over Things That Burn
En
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'ne Ex'-
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Things that can burn could touch hot exhaust
parts under your vehicle and ignite. Don't park
over papers, leaves, dry grass or other things
that can burn.
Engine exhaust can kill. It contains the gas
carbon monoxide (CO), which you can't see or
smell. It can cause unconsciousness and
death.
You might have exhaust coming in if:
Your exhaust system sounds strange or
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.
different.
Repairs weren't done correctly.
Your vehicle or exhaust system had been
modified improperly.
If you ever suspect exhaust is coming into
your vehicle:
0
Drive
it
only with all the windows down to
Have your vehicle fixed immediately.
blow out any CO; and
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