GMC 2013 GMC Sierra, Owner'S Manual, Page: 299 / 534

Black plate (33,1)
GMC Sierra Owner Manual - 2013 - crc - 8/14/12
Driving and Operating 9-33
especially when the vehicle has a
heavy load, you might notice an
increase in the effort to shift out of
P (Park). See
“ Torque Lock ” under
Shifting Into Park on page 9 ‑ 28 for
more information.
{
WARNING
It is dangerous to get out of the
vehicle if the shift lever is not fully
in P (Park) with the parking brake
firmly set. The vehicle can roll.
Do not leave the vehicle when the
engine is running. If you have left
the engine running, the vehicle
can move suddenly. You or others
could be injured. To be sure the
vehicle will not move, even when
you are on fairly level ground,
always set the parking brake and
move the shift lever to P (Park).
See
Shifting Into Park on
page 9 ‑ 28 and Driving
Characteristics and Towing Tips
on page 9
‑ 71 .
{
WARNING
If you have Four-Wheel Drive, the
vehicle will be free to roll
— even
if the shift lever is in P (Park) — if
the transfer case is in Neutral. So,
be sure the transfer case is in a
drive gear, Two-Wheel Drive High
or Four-Wheel Drive High or
Four-Wheel Drive Low
— not in
Neutral. See Shifting Into Park on
page 9 ‑ 28 .
R (Reverse): Use this gear to
back up.
Notice: Shifting to R (Reverse)
while the vehicle is moving
forward could damage the
transmission. The repairs would
not be covered by the vehicle
warranty. Shift to R (Reverse) only
after the vehicle is stopped.
To rock the vehicle back and forth to
get out of snow, ice, or sand without
damaging the transmission, see
If
the Vehicle Is Stuck on page 9 ‑ 14 .
N (Neutral): In this position, the
engine does not connect with the
wheels. To restart when you are
already moving, use N (Neutral)
only. Also, use N (Neutral) when the
vehicle is being towed.
{
WARNING
Shifting into a drive gear while the
engine is running at high speed is
dangerous. Unless your foot is
firmly on the brake pedal, the
vehicle could move very rapidly.
You could lose control and hit
people or objects. Do not shift
into a drive gear while the engine
is running at high speed.
Notice: Shifting out of P (Park) or
N (Neutral) with the engine
running at high speed may
damage the transmission. The
repairs would not be covered by
the vehicle warranty. Be sure the
engine is not running at high
speed when shifting the vehicle.