2018 GMC YUKON XL height adjustment

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
In Brief 13See Second Row Seats 0 69 .
Third Row Seats Third row seatbacks can be folded.
See Third Row Seats 0 74 .
Heated and Ventilated
Seats
The buttons are on the center stack
below the climate control system. To
operate, the engine must be
running.
Press
I to heat the driver or
passenger seatback only. Press
J to heat the driver or
passenger seat cushion and
seatback.
Press
C to ventilate the driver or
passenger seat.
See Heated and Ventilated Front
Seats 0 67 .
Head Restraint
Adjustment Do not drive until the head restraints
for all occupants are installed and
adjusted properly.
To achieve a comfortable seating
position, change the seatback
recline angle as little as necessary
while keeping the seat and the head
restraint height in the proper
position.
See Head Restraints 0 61 and
Power Seat Adjustment 0 62 .Seat Belts
Refer to the following sections for
important information on how to use
seat belts properly:
.
Seat Belts 0 76 .
.
How to Wear Seat Belts Properly
0 77 .
.
Lap-Shoulder Belt 0 78 .
.
Lower Anchors and Tethers for
Children (LATCH System) 0 104 .

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
Keys, Doors, and Windows 47sensor, the liftgate will reverse
direction and stop at a partially open
position. The liftgate will remain
open until it is activated again or
closed manually.
Setting the 3/4 Mode To change the position the liftgate
stops at when opening:
1. Select MAX or 3/4 mode and
open the liftgate.
2. Stop the liftgate movement at
the desired height by pressing
any liftgate button. Manually
adjust the liftgate position if
needed.
3. Press and hold
l on the
bottom edge of the liftgate next
to the latch on the outside of
the liftgate until the turn signals
flash and a beep sounds. This
indicates the setting has been
recorded.
The liftgate cannot be set below a
minimum programmable height.
If there is no light flash or sound,
then the height adjustment may be
too low. Manual Operation Select OFF to manually operate the
liftgate. See “ Manual Liftgate ” at the
beginning of this section.
CautionAttempting to move the liftgate
too quickly and with excessive
force may result in damage to the
vehicle.
Operate the liftgate manually with a
smooth motion and moderate
speed. The system includes a
feature which limits the manual
closing speed to protect the
components.
Hands-Free Operation If equipped with Hands-Free Vehicle
Access, the liftgate may be
operated with a kicking motion
under the rear bumper.
The liftgate will not operate if the
RKE transmitter is not within
1 m (3 ft). The hands-free feature will not work
while the liftgate is moving. To stop
the liftgate while in motion use one
of the liftgate switches.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
80 Seats and Restraints Before a door is closed, be sure the
seat belt is out of the way. If a door
is slammed against a seat belt,
damage can occur to both the seat
belt and the vehicle.
Shoulder Belt Height Adjuster The vehicle has a shoulder belt
height adjuster for the driver and
front outboard passenger positions.
Adjust the height so the shoulder
portion of the belt is on the shoulder
and not falling off of it. The belt
should be close to, but not
contacting, the neck. Improper
shoulder belt height adjustment
could reduce the effectiveness of
the seat belt in a crash. See How to
Wear Seat Belts Properly 0 77 . Push down on the release button to
move the height adjuster to the
desired position.
Move the adjuster up by pushing up
on the shoulder belt guide.
After the adjuster is set to the
desired position, try to move it down
without pushing the release button
to make sure it has locked into
position.
Seat Belt Pretensioners
This vehicle has seat belt
pretensioners for front outboard
occupants. Although the seat belt
pretensioners cannot be seen, they
are part of the seat belt assembly. They can help tighten the seat belts
during the early stages of a
moderate to severe frontal, near
frontal, or rear crash if the threshold
conditions for pretensioner
activation are met. Seat belt
pretensioners can also help tighten
the seat belts in a side crash or a
rollover event.
Pretensioners work only once. If the
pretensioners activate in a crash,
the pretensioners and probably
other parts of the vehicle's seat belt
system will need to be replaced.
See Replacing Seat Belt System
Parts after a Crash 0 84 .
Do not sit on the outboard seat belt
while entering or exiting the vehicle
or at any time while sitting in the
seat. Sitting on the seat belt can
damage the webbing and hardware.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/21/17
Driving and Operating 267not to exceed the RGAWR before
applying the weight distribution
spring bars.
Weight of the Trailering
Combination It is important that the combination
of the tow vehicle and trailer does
not exceed any of its weight
ratings — GCWR, GVWR, RGAWR,
Trailer Weight Rating, or Tongue
Weight. The only way to be sure it is
not exceeding any of these ratings
is to weigh the tow vehicle and
trailer combination, fully loaded for
the trip, getting individual weights
for each of these items.
Towing Equipment Hitches The correct hitch equipment helps
maintain combination control. Most
small-to-medium trailers can be
towed with a weight-carrying hitch
which simply features a coupler
latched to the hitch ball. Larger
trailers may require a
weight-distributing hitch that uses
spring bars to distribute the trailer tongue weight among the two
vehicle and trailer axles. See
“ Weight of the Trailer Tongue ” in
Trailer Towing 0 262 for rating limits
with various hitch types.
Consider using sway controls with
any trailer. Ask a trailering
professional about sway controls or
refer to the trailer manufacturer's
recommendations and instructions.
Weight-Distributing Hitch
Adjustment
1. Front of Vehicle
2. Body to Ground Distance When using a weight-distributing
hitch, measure distance (2) before
coupling the trailer to the hitch ball.
Measure the height again after the
trailer is coupled and adjust the
spring bars so the distance (2) is as
close as possible to halfway
between the two measurements.
Safety Chains Always attach chains between the
vehicle and the trailer. Cross the
safety chains under the tongue of
the trailer to help prevent the tongue
from contacting the road if it
becomes separated from the hitch.
Instructions about safety chains
may be provided by the hitch
manufacturer or by the trailer
manufacturer. If the trailer being
towed weighs up to 2 271 kg
(5,000 lb) with a factory-installed
step bumper, safety chains may be
attached to the attaching points on
the bumper, otherwise, safety
chains should be attached to holes
on the trailer hitch platform. Always
leave just enough slack so the
combination can turn. Never allow
safety chains to drag on the ground.