Parking Over Things That Burn; Active Fuel Management; Extended Parking - GMC Sierra Denali 1500 2023 Owner's Manual

222 Driving and Operating
5. The P indicator will turn white and the
gear indicator on the shift lever will turn
red when the vehicle is no longer in
P (Park).
6. After releasing the shift lever, it will
return to the center position.
If equipped, the Buckle to Drive feature may
prevent shifting from P (Park). See Buckle To
Drive 0 57.
If the vehicle cannot shift from P (Park), a
Driver Information Center (DIC) message
may be displayed. Ensure the engine is
running, the brake pedal is applied, and the
shift lock release button is pressed when
you are attempting to shift out of P (Park).
If all of these conditions are met but the
vehicle will not shift out of P (Park), see
your dealer for service.

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

If equipped, Active Fuel Management allows
a V8, V6, or L4 gasoline engine to operate
on either all of its cylinders, or a reduced
number of cylinders, depending on the
driving conditions. When less power is
required, such as cruising at a constant
vehicle speed, the system will enable
reduced cylinder operation, allowing the
vehicle to achieve better fuel economy.
When greater power is required, such as
accelerating from a stop, passing,
or merging onto a freeway, the system will
maintain full-cylinder operation.
Dynamic Fuel Management
If equipped, Dynamic Fuel Management
calculates the number of cylinders needed to
maximize fuel economy and meet the
driving demands. Dynamic Fuel Management
allows the engine to operate in multiple
possible configurations ranging from
zero-cylinder up to the full 8-cylinder
operation.

Extended Parking

It is best not to park with the vehicle
running. If the vehicle is left running, be
sure it will not move and there is adequate
ventilation.
See Shifting Into Park (Mechanical Shifter)
0 219 or Shifting Into Park (Electronic Shifter)
0 220 and Engine Exhaust 0 223.
If the vehicle is left parked and running with
the remote key outside the vehicle, it will
continue to run for up to 15 minutes.
If the vehicle is left parked and running with
the remote key inside the vehicle, it will
continue to run for up to 30 minutes.
The vehicle could turn off sooner if it is
parked on a hill, due to lack of
available fuel.
The timer will reset if the vehicle is taken
out of P (Park) while it is running.
When the vehicle was produced, it came
with the auto-shutdown feature enabled.
If you are not the primary owner of your
vehicle, please note that this feature may
have been disabled by a previous owner.
The vehicle owners can have this feature
re-enabled at owner cost at any GM service
center.