2010 GMC SIERRA height

On vehicles with two-way lumbar, press and hold
the top of the control to increase lumbar support.
To decrease, press and hold the bottom of the control.
On vehicles with four-way lumbar, press and hold
the front of the control to increase lumbar support.
To decrease, press and hold the rear of the control.
To raise the height of the support, press and hold the
top of the control. To lower, press and hold the bottom
of the control.
SeePower Lumbar on page 2‑7.Manual Reclining Seatbacks
If equipped, this control is located on the outboard side
of the seat.
To recline the seatback:
1. Lift the recline lever.
2. Move the seatback to the desired position, then release the lever to lock the seatback in place.
3. Push and pull on the seatback to make sure it is locked.
See Reclining Seatbacks on page 2‑10.
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Head Restraints
The front seats have adjustable head restraints in the
outboard seating positions.
{WARNING:
With head restraints that are not installed and
adjusted properly, there is a greater chance that
occupants will suffer a neck/spinal injury in a
crash. Do not drive until the head restraints for all
occupants are installed and adjusted properly.
Adjust the head restraint so that the top of the restraint
is at the same height as the top of the occupant's head.
This position reduces the chance of a neck injury in a
crash.
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Power Lumbar
On seats with power lumbar, the controls used to
operate this feature are located on the outboard side of
the seats.
This vehicle may have 2–way lumbar.
.To increase lumbar support, press and hold the top
of the control.
.To decrease lumbar support, press and hold the
bottom of the control.The vehicle may have 4–way lumbar.
.To increase lumbar support, press and hold the
front of the control.
.To decrease lumbar support, press and hold the
rear of the control.
.To raise the height of the lumbar support, press
and hold the top of the control.
.To lower the height of the lumbar support, press
and hold the bottom of the control.
Release the control when the lower seatback reaches
the desired level of lumbar support.
Your vehicle may have a memory function which allows
seat settings to be saved and recalled. See Memory
Seat, Mirrors, and Pedals
on page 2‑8for more
information.
Keep in mind that as your seating position changes, as
it may during long trips, so should the position of your
lumbar support. Adjust the seat as needed.
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4. If equipped with a shoulder belt height adjuster,move it to the height that is right for you.
See “Shoulder Belt Height Adjustment” later in
this section.
5. To make the lap part tight, pull up on the shoulder belt.
It may be necessary to pull stitching on the safety
belt through the latch plate to fully tighten the lap
belt on smaller occupants.
To unlatch the belt, push the button on the buckle.
The belt should return to its stowed position.
Before a door is closed, be sure the safety belt is out
of the way. If a door is slammed against a safety belt,
damage can occur to both the safety belt and the
vehicle.
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Shoulder Belt Height Adjuster
The vehicle has a shoulder belt height adjuster for the
driver and right front passenger.
Adjust the height so that the shoulder portion of the belt
is centered on the shoulder. The belt should be away
from the face and neck, but not falling off the shoulder.
Improper shoulder belt height adjustment could reduce
the effectiveness of the safety belt in a crash.
Regular and Crew CabTo move the adjuster
down for the regular and
crew cabs, squeeze the
buttons (A) on the sides of
the height adjuster and
move the height adjuster
to the desired position.
Extended CabOn the extended cab,
push down on the release
button (A) and move the
height adjuster to the
desired position.
You can move the adjuster up just by pushing up on the
shoulder belt guide.
After you move the adjuster to where you want it, try to
move it down, without squeezing the buttons for the
regular and crew cabs, or without pushing the release
button for extended cabs, to make sure it has locked
into position.
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Child Restraints
Older Children
Older children who have outgrown booster seats should
wear the vehicle's safety belts.The manufacturer's instructions that come with the
booster seat state the weight and height limitations for
that booster. Use a booster seat with a lap-shoulder belt
until the child passes the below fit test:
.Sit all the way back on the seat. Do the knees
bend at the seat edge? If yes, continue. If no,
return to the booster seat.
.Buckle the lap-shoulder belt. Does the shoulder
belt rest on the shoulder? If yes, continue. If no, try
using the rear safety belt comfort guide. See
“Rear
Safety Belt Comfort Guides” underLap-Shoulder
Belt
on page 2‑30for more information. If the
shoulder belt still does not rest on the shoulder,
then return to the booster seat.
.Does the lap belt fit low and snug on the hips,
touching the thighs? If yes, continue. If no, return
to the booster seat.
.Can proper safety belt fit be maintained for the
length of the trip? If yes, continue. If no, return to
the booster seat.
.If you have the choice, a child should sit in a
position with a lap-shoulder belt and get the
additional restraint a shoulder belt can provide.
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{WARNING:
Never do this.
Children who are up against, or very close to, any
airbag when it inflates can be seriously injured or
killed. Never put a rear-facing child restraint in the
right front seat. Secure a rear-facing child restraint
in a rear seat. It is also better to secure a
forward-facing child restraint in a rear seat. If you
must secure a forward-facing child restraint in the
right front seat, always move the front passenger
seat as far back as it will go.
Q: What are the different types of add-on childrestraints?
A: Add-on child restraints, which are purchased by the
vehicle's owner, are available in four basic types.
Selection of a particular restraint should take into
consideration not only the child's weight, height, and
age but also whether or not the restraint will be
compatible with the motor vehicle in which it will
be used.
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For most basic types of child restraints, there are
many different models available. When purchasing a
child restraint, be sure it is designed to be used in a
motor vehicle. If it is, the restraint will have a label
saying that it meets federal motor vehicle safety
standards.
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.
{WARNING:
To reduce the risk of neck and head injury during
a crash, infants need complete support. This is
because an infant's neck is not fully developed
and its head weighs so much compared with the
rest of its body. In a crash, an infant in a
rear-facing child restraint 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 should always be secured in
rear-facing child restraints.
{WARNING:
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. To reduce the
risk of serious or fatal injuries during a crash,
young children should always be secured in
appropriate child restraints.
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