2010 GMC SIERRA Owner's Manual

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

2. Press and hold button 1 until two beepssound to indicate that the position has
been stored.
A second seating, mirror, and throttle and brake pedal
position can be programmed by repeating the above
steps and pressing button 2.
To recall the memory positions, the vehicle must be in
P (Park). Press and release either button 1 or button 2
corresponding to the desired driving position. The seat,
outside mirrors, and adjustable throttle and brake
pedals will move to the position previously stored.
You will hear a single beep.
If you use the remote keyless entry transmitter to enter
your vehicle and the remote recall memory feature is
on, automatic seat, adjustable mirror, and adjustable
pedal movements will occur. See “MEMORY SEAT
RECALL” underDIC Vehicle Customization (With DIC
Buttons)
on page 4‑75for more information. To stop recall movement of the memory function at any
time, press one of the power seat controls, memory
buttons, power mirror buttons, or adjustable pedal
switch.
If something has blocked the driver
’s seat and/or the
adjustable pedals while recalling a memory position, the
driver ’s seat and/or the adjustable pedals recall may
stop working. If this happens, remove the obstruction
and press the appropriate control for the area that is not
responding for two seconds. Try recalling the memory
position again by pressing the appropriate memory
button. If the memory position is still not recalling,
see your dealer for service.
2-9

Easy Exit Seat
The control for this feature is located on the driver’s
door panel between buttons 1 and 2.
With the vehicle in P (Park), the driver's seat exit
position can be recalled by pressing the exit button.
You will hear a single beep, and the driver ’s seat will
move back.
If the easy exit seat feature is programmed in the Driver
Information Center (DIC), automatic seat movement will
occur when the key is removed from the ignition. See
“EASY EXIT SEAT” underDIC Vehicle Customization
(With DIC Buttons)
on page 4‑75for more information.
The memory seat and easy exit features can also be
programmed using the DIC.
For programming information, see DIC Vehicle
Customization (With DIC Buttons) on page 4‑75.
Reclining Seatbacks
{WARNING:
You can lose control of the vehicle if you try to
adjust a manual driver's seat while the vehicle is
moving. The sudden movement could startle and
confuse you, or make you push a pedal when you
do not want to. Adjust the driver's seat only when
the vehicle is not moving.
{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.
2-10

{WARNING:
Sitting in a reclined position when your vehicle is
in motion can be dangerous. Even if you buckle
up, your safety belts cannot do their job when you
are reclined like this.
The shoulder belt cannot do its job. In a crash,
you could go into it, receiving neck or other
injuries.
The lap belt cannot do its job either. In a crash the
belt could go up over your abdomen. The belt
forces would be there, not at your pelvic bones.
This could cause serious internal injuries.
For proper protection when the vehicle is in
motion, have the seatback upright. Then sit well
back in the seat and wear your safety belt
properly.
2-11

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