GMC YUKON 2017 Owner's Manual page 229

228 Driving and Operating
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 0 224 and
Driving Characteristics and
Towing Tips 0 268.
Warning
If you have four-wheel drive, the
vehicle will be free to roll
if the shift lever is in P (Park)
the transfer case is in N (Neutral).
(Continued)
Warning (Continued)
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
N (Neutral). See Shifting Into
Park 0 224.
R : Use this gear to back up.
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
even
the Vehicle Is Stuck 0 211.
if
N : In this position, the engine does
not connect with the wheels. To
restart when you are already
not in
Caution
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.
Caution
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.