Parking Over Things; That Burn; Active Fuel Management; Engine Exhaust - GMC 2016 Sierra Owner's Manual

Parking over Things

That Burn

Warning
Things that can burn could touch
hot exhaust parts under the
vehicle and ignite. Do not park
over papers, leaves, dry grass,
or other things that can burn.

Active Fuel Management

Vehicles with a V8 or V6 gasoline
engine may have Active Fuel
Management. This system allows
the engine to operate on either all of
its cylinders, or in V4 mode,
depending on the driving conditions.
When less power is required, such
as cruising at a constant vehicle
speed, the system will operate in
the V4 mode, allowing the vehicle to
achieve better fuel economy. When
greater power demands are
required, such as accelerating from
a stop, passing, or merging onto a
freeway, the system will maintain
full-cylinder operation.
If the vehicle has an Active Fuel
Management indicator, see Driver
®
Information Center (DIC) (Base
Level) 0 148 or Driver Information
Center (DIC) (Uplevel) 0 150 for
more information on using this
display.
Driving and Operating

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.
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