2007 GMC YUKON XL ECU

Front Seats......................................................9
Manual Seats.................................................9
Power Seats................................................10
Power Lumbar.............................................11
Heated Seats...............................................12
Memory Seat, Mirrors, and Pedals...............13
Reclining Seatbacks.....................................15
Head Restraints...........................................18
Center Seat.................................................19
Rear Seats.....................................................19
Heated Seats...............................................19
60/40 Split Bench Seat (Second Row).........20
Bucket Seats (Second Row).........................26
Third Row Seat............................................33
Safety Belts...................................................38
Safety Belts: They Are for Everyone............38
Questions and Answers About Safety
Belts.........................................................42
How to Wear Safety Belts Properly..............43
Driver Position.............................................44
Shoulder Belt Height Adjustment..................51Safety Belt Use During Pregnancy...............52
Right Front Passenger Position....................52
Center Front Passenger Position..................53
Rear Seat Passengers.................................54
Rear Safety Belt Comfort Guides.................56
Safety Belt Pretensioners.............................60
Safety Belt Extender....................................60
Child Restraints.............................................61
Older Children..............................................61
Infants and Young Children..........................64
Child Restraint Systems...............................68
Where to Put the Restraint...........................72
Lower Anchors and Tethers for
Children (LATCH).....................................73
Securing a Child Restraint in a
Rear Seat Position....................................83
Securing a Child Restraint in the
Center Front Seat Position........................85
Securing a Child Restraint in the
Right Front Seat Position..........................86
Section 1 Seats and Restraint Systems
7

Removing the Third Row Seat
To remove the seat, do the following:
1. Open the liftgate to access the controls for
the seat.
2. Fold the seatback forward using the
instructions listed under “Folding the
Seatbacks” previously. The seat cannot be
removed unless the seatback is folded.
3. Unlatch the seat from the oor by pulling the
carrying handle, located at the rear of the
seat, rearward.
4. Roll the seat out of the vehicle. There is a
track in the oor to guide the seat wheels
out of the vehicle.
Installing the Third Row Seat
To install the seat, do the following:
1. Open the liftgate to access the rear of the
vehicle.
2. Slide the front outboard seat wheels into the
track on the oor and roll the seat forward.
The front latches should lock into place. If the
latches do not lock, try tilting the rear of
the seat upward slightly.
3. Lower the rear of the seat and push down on
the seat to engage the rear oor latches.
{CAUTION:
A seat that is not locked into place
properly can move around in a collision or
sudden stop. People in the vehicle could
be injured. Be sure to lock the seat into
place properly when installing it.
4. Push and pull on the seat to make sure it is
locked into place. The seatback cannot be
raised to the upright position unless the seat is
secured to the oor.
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4. Push the latch plate into the buckle until
it clicks.
Pull up on the latch plate to make sure it is
secure. If the belt is not long enough,
seeSafety Belt Extender on page 60.
Make sure the release button on the buckle is
positioned so you would be able to unbuckle
the safety belt quickly if you ever had to.
5. Move the shoulder belt height adjuster to the
height that is right for you. Improper shoulder
belt height adjustment could reduce the
effectiveness of the safety belt in a crash. See
Shoulder Belt Height Adjustment on page 51.
6. To make the lap part tight, pull up on the
shoulder belt.
45

Rear Seat Passengers
It is very important for rear seat passengers to
buckle up! Accident statistics show that unbelted
people in the rear seat are hurt more often in
crashes than those who are wearing safety belts.
Rear passengers who are not safety belted
can be thrown out of the vehicle in a crash. And
they can strike others in the vehicle who are
wearing safety belts.
Lap-Shoulder Belt
All rear seat positions have lap-shoulder belts.
Here is how to wear one properly.
1. Pick up the latch plate and pull the belt across
you. Do not let it get twisted.
The shoulder belt may lock if you pull the belt
across you very quickly. If this happens, let
the belt go back slightly to unlock it. Then pull
the belt across you more slowly.
2. Push the latch plate into the buckle until
it clicks.
Pull up on the latch plate to make sure it is
secure.
When the shoulder belt is pulled out all the
way, it will lock. If it does, let it go back all the
way and start again.
54

Safety Belt Pretensioners
Your vehicle has safety belt pretensioners for the
driver and right front passenger. Although you
cannot see them, they are located on the retractor
part of the safety belts. They help the safety
belts reduce a person’s forward movement in a
moderate to severe frontal, near frontal, rear
or side crash, or a rollover.
Pretensioners work only once. If they activate in
a crash, you will need to get new ones, and
probably other new parts for your safety belt
system. SeeReplacing Restraint System Parts
After a Crash on page 107.
Safety Belt Extender
If the vehicle’s safety belt will fasten around you,
you should use it.
But if a safety belt is not long enough, your dealer
will order you an extender. It is free. When you
go in to order it, take the heaviest coat you
will wear, so the extender will be long enough for
you. To help avoid personal injury, do not let
someone else use it, and use it only for the seat it
is made to t. The extender has been designed
for adults. Never use it for securing child seats. To
wear it, just attach it to the regular safety belt.
For more information, see the instruction sheet that
comes with the extender.
60

{CAUTION:
People should never hold a baby in their
arms while riding in a vehicle. A baby does
not weigh much — until a crash. During a
crash a baby will become so heavy it is not
possible to hold it. For example, in a crash
at only 25 mph (40 km/h), a 12 lb (5.5 kg)
baby will suddenly become a 240 lb
(110 kg) force on a person’s arms. A baby
should be secured in an appropriate
restraint.
65

The restraint manufacturer’s instructions that
come with the restraint, state the weight and
height limitations for a particular child restraint.
In addition, there are many kinds of restraints
available for children with special needs.
{CAUTION:
Newborn infants need complete support,
including support for the head and neck.
This is necessary because a newborn
infant’s neck is weak and its head weighs
so much compared with the rest of its
body. In a crash, an infant in a rear-facing
seat settles into the restraint, so the crash
forces can be distributed across the
strongest part of an infant’s body, the
back and shoulders. Infants always
should be secured in appropriate infant
restraints.
{CAUTION:
The body structure of a young child is
quite unlike that of an adult or older child,
for whom the safety belts are designed. A
young child’s hip bones are still so small
that the vehicle’s regular safety belt may
not remain low on the hip bones, as it
should. Instead, it may settle up around
the child’s abdomen. In a crash, the belt
would apply force on a body area that is
unprotected by any bony structure. This
alone could cause serious or fatal injuries.
Young children always should be secured
in appropriate child restraints.
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Q:How Should I Use a Child Restraint?
A:A child restraint system is any device designed
for use in a motor vehicle to restrain, seat, or
position children. A built-in child restraint
system is a permanent part of the motor
vehicle. An add-on child restraint system is a
portable one, which is purchased by the
vehicle’s owner. To help reduce injuries, an
add-on child restraint must be secured in
the vehicle. With built-in or add-on child
restraints, the child has to be secured within
the child restraint.
When choosing an add-on child restraint, be
sure the child restraint is designed to be
used in a vehicle. If it is, it will have a label
saying that it meets federal motor vehicle
safety standards. Then follow the instructions
for the restraint. You may nd these
instructions on the restraint itself or in a
booklet, or both.
Securing an Add-on Child Restraint in
the Vehicle
{CAUTION:
A child can be seriously injured or killed
in a crash if the child restraint is not
properly secured in the vehicle. Make sure
the child restraint is properly installed in
the vehicle using the vehicle’s safety belt
or LATCH system, following the
instructions that came with that restraint,
and also the instructions in this manual.
To help reduce the chance of injury, the child
restraint must be secured in the vehicle. Child
restraint systems must be secured in vehicle seats
by lap belts or the lap belt portion of a lap-shoulder
belt, or by the LATCH system. SeeLower
Anchors and Tethers for Children (LATCH) on
page 73for more information. A child can
be endangered in a crash if the child restraint is
not properly secured in the vehicle.
70