Automatic Transmission - GMC 2016 Yukon XL Denali Owner's Manual

Automatic
Transmission
If equipped, there is an electronic
shift lever position indicator within
the instrument cluster. This display
comes on when the ignition key is
turned to the ON/RUN position.
There are several different positions
for the shift lever.
See Range Selection Mode under
Manual Mode 0 209.
P : This position locks the rear
wheels. It is the best position to use
when starting the engine because
the vehicle cannot move easily.
When parked on a hill, 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 0 203.
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 0 203 and
Driving Characteristics and
Towing Tips 0 246.
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)
Driving and Operating
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
0 203.
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 0 192.
if
N : In this position, the engine does
not connect with the wheels. To
restart when you are already
207
not in
Caution