seats GMC SIERRA 2010 User Guide

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.
2-7

Heated Seats
On vehicles with heated front seats, the controls are
located on the driver and passenger doors.
I(Heated Seatback) : Press to turn on the heated
seatback.
J (Heated Seat and Seatback) : Press to turn on the
heated seat and seatback.
The light on the button will come on to indicate that the
feature is working. Press the button to cycle through the
temperature settings of high, medium, and low and to
turn the heat to the seat off. Indicator lights will show
the level of heat selected: three for high, two for
medium, and one for low.
The heated seats will be canceled 10 seconds after the
ignition is turned off. To use the heated seat feature
after restarting the vehicle, press the heated seat or
seatback button again.
Memory Seat, Mirrors, and Pedals
Your vehicle may have the memory package.
The controls for this
feature are located on the
driver's door panel, and
are used to program and
recall memory settings for
the driver's seat, outside
mirrors, and the
adjustable throttle and
brake pedal.
To save seating positions in memory: 1. Adjust the driver's seatback recliner, both outside mirrors, and the throttle and brake pedals to a
comfortable position.
See Outside Power Mirrors
on page 3‑57and
Adjustable Throttle and Brake Pedalon page 3‑26for more information.
Not all mirrors, adjustable throttles and brake
pedals will have the ability to save and recall their
positions.
2-8

Manual Reclining Seatbacks
On seats with manual reclining seatbacks, the lever
used to operate them is located on the outboard side of
the seat(s).
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. To return the seatback to an upright position, do the
following:
1. Lift the lever fully without applying pressure to the seatback and the seatback will return to the upright
position.
2. Push and pull on the seatback to make sure it is locked.
2-12

Power Reclining Seatbacks
If the seats have power reclining seatbacks, the control
used to recline them is located on the outboard side of
the seat behind the power seat control.
.To recline the seatback, tilt the top of the control
rearward.
.To bring the seatback forward, tilt the top of the
control forward.
Do not have a seatback reclined if your vehicle is
moving.
Seatback Latches
The front seatbacks tilt forward to allow access to the
rear of the cab.
To tilt the seatback forward, lift the lever located on the
outboard side of the seat cushion.
{WARNING:
If either seatback is not locked, it could move
forward in a sudden stop or crash. That could
cause injury to the person sitting there. Always
push and pull on the seatbacks to be sure they
are locked.
To return the seatback to the upright position, push the
seatback rearward until it latches. After returning the
seatback to its upright position, push and pull on the
seatback to make sure it is locked.
Center Seat
Your vehicle may have a front center seat. The
seatback doubles as an armrest and cupholder/storage
area for the driver and passenger when the center seat
is not used. Do not use it as a seating position when the
seatback is folded down.
2-13

Rear Seats
Rear Seat Operation
(Extended Cab Full Bench)
Folding the Rear Seat
Notice:Folding a rear seat with the safety belts still
fastened may cause damage to the seat or the
safety belts. Always unbuckle the safety belts and
return them to their normal stowed position before
folding a rear seat. To fold the seat up, do the following:
1. Pull up on the front of
the seat cushion while
pulling down on the
release strap, located
under the seat cushion.
2. Pull the seat cushion up until it latches with the seatback.
3. After latching the seat cushion up, pull forward on it to make sure it is locked.
To fold the seat down, do the following: 1. Push the seat cushion rearward while pulling the release strap, located under the seat cushion.
Pull the seat cushion down until it latches.
2. After latching the seat cushion, pull up on it to make sure it is locked.
2-14

Safety Belts
Safety Belts: They Are for Everyone
This part of the manual tells you how to use safety belts
properly. It also tells you some things you should not do
with safety belts.
{WARNING:
Do not let anyone ride where a safety belt cannot
be worn properly. In a crash, if you or your
passenger(s) are not wearing safety belts, the
injuries can be much worse. You can hit things
inside the vehicle harder or be ejected from the
vehicle. You and your passenger(s) can be
seriously injured or killed. In the same crash, you
might not be, if you are buckled up. Always fasten
your safety belt, and check that your passenger(s)
are restrained properly too.
{WARNING:
People riding on the tailgate (if equipped) can
easily lose their balance and fall even when the
vehicle is operated at low speeds. Falling from a
moving vehicle may result in serious injuries or
death.
{WARNING:
It is extremely dangerous to ride in a cargo area,
inside or outside of a vehicle. In a collision,
people riding in these areas are more likely to be
seriously injured or killed. Do not allow people to
ride in any area of your vehicle that is not
equipped with seats and safety belts. Be sure
everyone in your vehicle is in a seat and using a
safety belt properly.
Your vehicle has indicators as a reminder to buckle your
safety belts. See Safety Belt Reminders on page 4‑32.
2-16

Lap-Shoulder Belt
If the vehicle is a regular cab, then all seating positions
in the vehicle have a lap-shoulder belt. If the vehicle is
a crew or extended cab, then all seating positions in the
vehicle have a lap-shoulder belt except for the center
front passenger position (if equipped), which has a lap
belt. SeeLap Belt (Crew and Extended Cab)
on
page 2‑37for more information.
The following instructions explain how to wear a
lap-shoulder belt properly. 1. Adjust the seat, if the seat is adjustable, so you can sit up straight. To see how, see “Seats”in the
Index.
2. Pick up the latch plate and pull the belt across you. Do not let it get twisted. The lap-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.
If the shoulder portion of a passenger belt is pulled
out all the way, the child restraint locking feature
may be engaged. If this happens, let the belt go
back all the way and start again.
Engaging the child restraint locking feature may
affect the passenger sensing system, if equipped.
See
Passenger Sensing System
on page 2‑85for
more information.
2-30

Safety Belt Pretensioners
This vehicle has safety belt pretensioners for front
outboard occupants. Although the safety belt
pretensioners cannot be seen, they are part of the
safety belt assembly. They can help tighten the safety
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. And,
if your vehicle has side impact airbags, safety belt
pretensioners can help tighten the safety belts in a side
crash or a rollover event.
Pretensioners work only once. If the pretensioners
activate in a crash, they will need to be replaced, and
probably other new parts for the vehicle's safety belt
system. SeeReplacing Restraint System Parts After a
Crash on page 2‑94.
Rear Safety Belt Comfort Guides
This vehicle may have rear shoulder belt comfort
guides. If not, they are available through your
dealer/retailer. The guides may provide added safety
belt comfort for older children who have outgrown
booster seats and for some adults. When installed and
properly adjusted, the comfort guide positions the belt
away from the neck and head.
2-34

To make the belt shorter, pull its free end as shown until
the belt is snug.
If the belt is not long enough, seeSafety Belt Extender
on page 2‑38.
Make sure the release button on the buckle is
positioned so you would be able to unbuckle the safety
belt quickly if necessary.
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/
retailer will order you an extender. 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 fit. The extender has
been designed for adults. Never use it for securing child
seats. To wear it, attach it to the regular safety belt.
For more information, see the instruction sheet that
comes with the extender.
2-38

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.
2-39