2003 GMC YUKON ECU

Front Seats......................................................1-3
Manual Seats................................................1-3
Power Seats..................................................1-4
Power Lumbar ...............................................1-5
Heated Seats.................................................1-5
Reclining Seatbacks........................................1-6
Head Restraints.............................................1-8
Rear Seats.......................................................1-8
Rear Seat Operation.......................................1-8
60/40 Split Bench Seat...................................1-9
50/50 Split Bench Seat..................................1-11
Bench Seat..................................................1-15
Bucket Seats...............................................1-20
Safety Belts...................................................1-22
Safety Belts: They Are for Everyone................1-22
Questions and Answers About Safety Belts......1-27
How to Wear Safety Belts Properly.................1-27
Driver Position..............................................1-28
Safety Belt Use During Pregnancy..................1-35
Right Front Passenger Position.......................1-36
Center Passenger Position.............................1-36
Rear Seat Passengers..................................1-38Rear Safety Belt Comfort Guides for Children
and Small Adults.......................................1-41
Safety Belt Extender.....................................1-43
Child Restraints.............................................1-44
Older Children..............................................1-44
Infants and Young Children............................1-46
Child Restraint Systems.................................1-50
Where to Put the Restraint.............................1-53
Top Strap....................................................1-54
Top Strap Anchor Location.............................1-55
Lower Anchorages and Top Tethers for
Children (LATCH System)...........................1-58
Securing a Child Restraint Designed for the
LATCH System.........................................1-61
Securing a Child Restraint in a Rear Outside
Seat Position............................................1-61
Securing a Child Restraint in a Center Rear
Seat Position
............................................1-64
Securing a Child Restraint in the Center Front
Seat Position
............................................1-66
Securing a Child Restraint in the Right Front
Seat Position
............................................1-66
Section 1 Seats and Restraint Systems
1-1
2003 - Yukon/Yukon XL

To fold, pull up on the
strap loop at the rear of
the seat cushion.
Then, pull the seat cushion
up and fold it forward.
After folding the seat cushion fully forward, pull the
seatback forward and fold the seatback down until it is
flat. If the seatback cannot foldflat because it
interferes with the cushion, try moving the seat forward
and/or bring the front seatback more upright. On the
passenger side of the Suburban/Yukon XL models, the
lever at the base of the seat must be turned rearward
to release the seatback.To create a loadfloor release the panels from the
seatback by pushing forward on the latch. Then fold the
panels back to cover the rear seat footwell area.
To return the seat to the passenger position on a
Suburban/Yukon XL do the following:
1. Lift thefloor load panels and latch them into the
seatback.
2. Lift the seatback up and push rearward all the way.
3. Lower the seat cushion until it latches into
position.
4. Pull forward on the seatback and up on the seat
cushion to make sure the seat is securely in
place.
1-10
2003 - Yukon/Yukon XL

Tilting the 50/50 Split Bench Seat
{CAUTION:
If the seatback isn’t locked, it could move
forward in a sudden stop or crash. That could
cause injury to the person sitting there. Always
press rearward on the seatback to be sure it is
locked.
{CAUTION:
If the support rod isn’t properly engaged, the
folded third rowseat could come loose in a
sudden stop or crash. That could cause injury
to people and damage to your vehicle. Always
be sure the support rod is properly engaged
when the third row seat is folded forward.Once the third seatback has been folded down, the
entire seat can be tilted forward to create aflat
loadfloor. To do this, do the following:
1. Enter the rear cargo area of the vehicle.
2. Make sure the head restraints have been lowered
completely.
3. With the seat folded, unlatch the seat from thefloor
by pulling up on the lever located under the
carrying handle at the rear of the seat labeled 2.
4. Lift the rear of the seat up, off thefloor. You will not
be able to unlatch the seat from thefloor unless the
seatback is folded down.
5. Tilt the seat fully forward and secure it in place
using the support rod located on the underside
of the seat on the passenger’s side. Make sure the
rod pin is fully engaged in the lock.
6. Push and pull on the seat. Make sure the support
rod is holding itfirmly in place. Use the seat in this
position only when necessary for additional
cargo space.
1-12
2003 - Yukon/Yukon XL

To return the seat to the seating position do the
following:
1. Push forward on the seat and release the support
lock rod.
2. Secure the support rod in its stored position on the
underside of the seat.
3. Lower the seat to thefloor and let the seat drop
into place.
4. Lift up on the carrying handle to make sure the seat
is locked in place.
5. Return the seatback to the upright position by
pulling up on the release lever labeled 1 before
the back can be folded upright.
6. Pull the seatback forward to make sure it is locked
in place.Removing the 50/50 Split Bench Seat
To remove the 50/50 split bench seat, do the following:
1. Open the rear doors and enter the rear of the
vehicle.
2. Fold the seatback
forward onto the seat
cushion by using
the lever labeled 1.
The seat cannot
be removed unless the
seatback is folded.
1-13
2003 - Yukon/Yukon XL

{CAUTION:
A safety belt that is improperly routed, not
properly attached, or twisted won’t provide the
protection needed in a crash. The person
wearing the belt could be seriously injured.
After raising the rear seatback, always check
to be sure that the safety belts are properly
routed and attached, and are not twisted.
To reinstall the 50/50 split bench, do the following:
1. While holding the rear of the seat up, slide the front
wheels into the slots on thefloor. The front latches
should lock into place. If the latches do not lock,
try tilting the rear of the seats upwards.2. Once the latches are engaged, let the seat drop
into place. Release the lever labeled 1 to return
the seat to its upright position.
3. 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
thefloor.
Bench Seat
If your vehicle has a full bench seat, the seatback can
be folded and the seat can be tilted or removed from the
vehicle.
1-15
2003 - Yukon/Yukon XL

{CAUTION:
If the support rod isn’t properly engaged, the
folded third rowseat could come loose in a
sudden stop or crash. That could cause injury
to people and damage to your vehicle. Always
be sure the support rod is properly engaged
when the third row seat is folded forward.
Once the third seatback has been folded down, the
entire seat can be tilted forward to create aflat
loadfloor. To do this, do the following:
1. Enter the rear cargo area of the vehicle.
2. Make sure the head restraints have been lowered
completely.3. With the seat folded,
unlatch the seat from
thefloor by pulling
up on the lever located
under the carrying
handle at the rear of
the seat labeled 2.
4. Lift the rear of the seat up, off thefloor. You will not
be able to unlatch the seat from thefloor unless the
seatback is folded down.
5. Tilt the seat fully forward and secure it in place
using the support rod located on the underside
of the seat on the passenger’s side. Make sure the
rod pin is fully engaged in the lock.
6. Push and pull on the seat. Make sure the support
rod is holding itfirmly in place. Use the seat in this
position only when necessary for additional
cargo space.
1-17
2003 - Yukon/Yukon XL

To return the seat to the seating position do the
following:
1. Push forward on the seat and release the support
lock rod.
2. Secure the support rod in its stored position on the
underside of the seat.
3. Lower the seat to thefloor and let the seat drop
into place.
4. Lift up on the carrying handle to make sure the seat
is locked in place.
5. Return the seatback to the upright position by
pulling up on the release lever labeled 1 before
the back can be folded upright.
6. Pull the seatback forward to make sure it is locked
in place.
Removing the Bench Seat
To remove the full bench seat, do the following:
1. Open the rear doors and enter the rear of the
vehicle.2. Fold the seatback
forward onto the seat
cushion by using
the lever labeled 1.
The seat cannot
be removed unless the
seatback is folded.
3. To unlatch the seat
from thefloor, pull up
on the release
lever labeled 2, located
at the rear of the
seat, and lift the rear of
the seat up off the
floor.
1-18
2003 - Yukon/Yukon XL

To reinstall the full bench seat, do the following:
1. While holding the rear of the seat up, slide the front
wheels into the slots on thefloor. The front latches
should lock into place. If the latches do not lock,
try tilting the rear of the seats upwards.
2. Once the latches are engaged, let the seat drop
into place. Release the lever labeled 1 to return
the seat to its upright position.
3. 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
thefloor.
Bucket Seats
If your vehicle has bucket seats, the seatbacks can be
reclined and the seats can be folded to give you
more cargo room.
Reclining the Seatbacks
On the Suburban/Yukon XL models with bucket seats,
the seatbacks can be reclined. To adjust the seatback
do the following:
1. Pull forward the lever located at the base of
the seat.
2. Release the lever to lock the seatback where you
want it. If you pull the lever without pushing on the
seatback, the seatback will go to an upright
position.
Folding the Seatbacks
{CAUTION:
If the seatback isn’t locked, it could move
forward in a sudden stop or crash. That could
cause injury to the person sitting there. Always
press rearward on the seatback to be sure it is
locked.
The seatbacks on the bucket seats may be folded
forward to give you more cargo space.
1-20
2003 - Yukon/Yukon XL