GMC SIERRA CLASSIC 2007 User Guide
Manufacturer: GMC, Model Year: 2007, Model line: SIERRA CLASSIC, Model: GMC SIERRA CLASSIC 2007Pages: 674, PDF Size: 3.5 MB
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Power Lumbar
Your vehicle may have this feature.
The control is located
on the outboard side of
the seat cushion.
To increase or decrease support, hold the control
forward or rearward. 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.
Heated Seats
If your vehicle has this
feature, the buttons are
located on the front
doors. The engine must
be running for the
heated seats to work.
To heat the entire seat, press the horizontal button
with the heated seat and seatback symbol.
Press the button to cycle through the temperature
settings of high, medium and low and to turn
the heated seat off. Indicator lights will come on to
designate the level of heat selected: three for
high, two for medium, and one for low.
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To heat only the seatback, press the vertical
button with the heated seatback symbol. An
indicator light on the seatback button will come on
to designate that only the seatback is being
heated. Additional presses of the seatback button
will cycle through the heat levels for the seatback
only. Press the horizontal button again to heat
the whole seat.
The heated seats will be canceled after the
ignition is turned off. If you still want to use
the heated seat feature after you restart your
vehicle, you will need to press the heated
seat button again.Memory Seat and Mirrors
If your vehicle has this
feature, the controls for
the memory function
are located on the
driver’s door.
These buttons are used to program and recall
memory settings for the driver’s seat and both the
driver’s and passenger’s outside mirrors. The
settings for these features can be saved for up to
two drivers.
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To store the memory settings, do the following:
1. If you have an automatic transmission, place
the vehicle in PARK (P).
If you have a manual transmission, set the
parking brake.
2. Adjust the driver’s seat, including the seatback
recliner and lumbar, and both outside mirrors
to your preference.
3. Press and hold the 1 or 2 button of the
memory control for three seconds. A
double chime will sound to let you know that
the position has been stored.
To repeat the procedure for a second driver,
follow the preceding steps, but press the other
numbered memory control button.To recall a memory position, do one of the
following:
If you have an automatic transmission, press
and release the desired button 1 or 2 while
the vehicle is in PARK (P). A single chime will
sound and the memory position will be
recalled.
If the vehicle is not in PARK (P), the memory
position will not be recalled.
If you have a manual transmission, press and
release the desired button 1 or 2 while the
parking brake is set. A single chime will sound
and the memory position will be recalled.
If the parking brake is not set, the memory
position will not be recalled.
To stop recall movement of the memory seat
feature at any time, press one of the memory
buttons or power seat controls.
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Page 14 of 674

Easy Exit Seat
The controls for this memory function are located
on the driver’s door.
B(Easy Exit Seat):This button is used to
program and recall the desired driver’s seat
position when exiting or entering the vehicle. The
seat position can be saved for up to two drivers.
To store the seat exit position, do the following:
1. If you have an automatic transmission,
place the vehicle in PARK (P).
If you have a manual transmission, set the
parking brake.
2. Press and release the 1 or 2 button. The seat
will move to the stored memory position.
3. Adjust the seat to the desired exit position.
4. Press and hold the exit button of the memory
control for three seconds. A double chime will
sound to let you know that the position has
been stored for the selected button 1 or 2.
To repeat the procedure for a second driver,
follow the preceding steps, but press the other
numbered memory control button.To use the seat exit position, do one of the
following:
If you have an automatic transmission, press
and release the exit button on the memory
control while the vehicle is in PARK (P).
If you have a manual transmission, press and
release the exit button on the memory control
while the parking brake is set.
If this feature is activated in the Driver
Information Center (DIC), removing the key
from the ignition will move the seat to the exit
position.
See “Easy Exit Seat” underDIC Vehicle
Customization on page 282for more information
on activating this feature in the DIC.
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Page 15 of 674

Reclining Seatbacks
Manual Reclining Seatbacks
{CAUTION:
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.
{CAUTION:
If the 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
seatback to be sure it is locked.If your seats have manual reclining seatbacks, the
lever used to operate them is located on the
outboard side of the seat(s).
To recline the seatback, do the following:
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.
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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.Power Reclining Seatbacks
If your seats have power reclining seatbacks, use
the vertical power seat control located on the
outboard side of the seat(s).
To recline the seatback, press the control
toward the rear of the vehicle.
To raise the seatback, press the control
toward the front of the vehicle.
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{CAUTION:
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
because it will not be against your body.
Instead, it will be in front of you. 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.
Do not have a seatback reclined if your vehicle is
moving.
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Head Restraints
Adjust the head restraint so that the top of the
restraint is at the same height as the occupant’s
head. This position reduces the chance of a
neck injury in a crash.
Pull the head restraint up to raise it. Push the
head restraint down to lower it.
The rear seats may have head restraints that can
be adjusted up and down.
Seatback Latches
The front seatbacks fold forward to allow access
to the rear of the cab.
To fold the seatback forward, lift the lever located
on the outboard side of the seat cushion.
{CAUTION:
If the 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
seatback to be sure it is 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.
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Rear Seats
Rear Seat Operation (Extended Cab)
Folding the Rear Seat
The rear seat in the extended cab can be folded
up to provide more cargo space.
To fold the seat up, do the following:
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.
1. Push down 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.
The seat can also be folded down for more
seating space.
To fold the seat down, do the following:
1. Push the seat cushion 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.
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