GMC 2007 Sierra User manual

Seats and Restraint Systems ....................... 7
Front Seats .............................................. 9
Rear Seats ............................................. 20
Safety Belts ............................................ 22
Child Restraints ...................................... 45
Airbag System ........................................ 83
Restraint System Check ....................... 104
Features and Controls .............................. 107
Keys ..................................................... 109
Doors and Locks .................................. 118
Windows ............................................... 124
Theft-Deterrent Systems ....................... 127
Starting and Operating Your Vehicle ..... 132
Mirrors .................................................. 169
OnStar
®
System ................................... 180
Universal Home Remote System .......... 184
Storage Areas ...................................... 196
Sunroof ................................................ 200
Instrument Panel ....................................... 203
Instrument Panel Overview ................... 206
Climate Controls ................................... 234
Warning Lights, Gages, and
Indicators .......................................... 246
Driver Information Center (DIC) ............ 267
Audio System(s) ................................... 300
Driving Your Vehicle ................................. 373
Your Driving, the Road, and
Your Vehicle ..................................... 374
Towing ................................................. 439
Service and Appearance Care .................. 483
Service ................................................. 486
Fuel ...................................................... 488
Checking Things Under the Hood ......... 496
Rear Axle ............................................. 538
Four-Wheel Drive .................................. 539
Front Axle ............................................ 541
2007 GMC Sierra Owner Manual M
1

Noise Control System ........................... 542
Bulb Replacement ................................ 543
Windshield Wiper Blade
Replacement ..................................... 549
Tires ..................................................... 550
Appearance Care .................................. 597
Vehicle Identification ............................. 607
Electrical System .................................. 608
Capacities and Specifications ................ 616
Maintenance Schedule .............................. 619
Maintenance Schedule .......................... 620
Customer Assistance Information ............. 643
Customer Assistance and
Information ........................................ 644
Reporting Safety Defects ...................... 662
Index .......................................................... 665
2

GENERAL MOTORS, GM, the GM Emblem,
GMC, the GMC Truck Emblem, and the name
SIERRA are registered trademarks of General
Motors Corporation.
This manual includes the latest information at the
time it was printed. We reserve the right to
make changes after that time without further
notice. For vehicles first sold in Canada, substitute
the name “General Motors of Canada Limited”
for GMC whenever it appears in this manual.
This manual describes features that may be
available in this model, but your vehicle may not
have all of them. For example, more than
one entertainment system may be offered or your
vehicle may have been ordered without a front
passenger or rear seats.
Keep this manual in the vehicle, so it will be there
if it is ever needed. If the vehicle is sold, leave
this manual in it so the new owner can use it.
Canadian Owners
A French language copy of this manual can be
obtained from your dealer/retailer or from:
Helm, Incorporated
P.O. Box 07130
Detroit, MI 48207
Litho in U.S.A.
Part No. 15854800 A First Printing
©
2006 General Motors Corporation. All Rights Reserved.
3

How to Use This Manual
Many people read the owner manual from
beginning to end when they first receive their new
vehicle. If this is done, it can help you learn
about the features and controls for the vehicle.
Pictures and words work together in the
owner manual to explain things.
If your vehicle has the DURAMAX
®
Diesel engine,
refer to the DURAMAX
®
Diesel supplement for
additional and specific information on this engine.
Index
A good place to quickly locate information about
the vehicle is the Index in the back of the manual.
It is an alphabetical list of what is in the manual
and the page number where it can be found.
Safety Warnings and Symbols
There are a number of safety cautions in this
book. We use a box and the word CAUTION to
tell about things that could hurt you if you were to
ignore the warning.
{CAUTION:
These mean there is something that could
hurt you or other people.
In the caution area, we tell you what the hazard is.
Then we tell you what to do to help avoid or
reduce the hazard. Please read these cautions. If
you do not, you or others could be hurt.
You will also find a
circle with a slash
through it in this book.
This safety symbol
means “Do Not,” “Do
Not do this” or “Do Not
let this happen.”
4

Vehicle Damage Warnings
Also, in this manual you will find these notices:
Notice: These mean there is something
that could damage your vehicle.
A notice tells about something that can damage
the vehicle. Many times, this damage would not be
covered by your vehicle’s warranty, and it could
be costly. But the notice will tell what to do to help
avoid the damage.
When you read other manuals, you might see
CAUTION and NOTICE warnings in different colors
or in different words.
There are also warning labels on the vehicle. They
use the same words, CAUTION or NOTICE.
Vehicle Symbols
The vehicle has components and labels that use
symbols instead of text. Symbols are shown along
with the text describing the operation or
information relating to a specific component,
control, message, gage, or indicator.
If you need help figuring out a specific name of a
component, gage, or indicator, reference the
following topics:
•Seats and Restraint Systems in Section 1
•Features and Controls in Section 2
•Instrument Panel Overview in Section 3
•Climate Controls in Section 3
•Warning Lights, Gages, and Indicators in
Section 3
•Audio System(s) in Section 3
•Engine Compartment Overview in Section 5
5

These are some examples of symbols that may be found on the vehicle:
6

Front Seats ..................................................... 9
Manual Seats ................................................ 9
Power Seats ............................................... 10
Manual Lumbar ........................................... 11
Power Lumbar ............................................. 11
Heated Seats .............................................. 12
Memory Seat, Mirrors, and Pedals .............. 13
Reclining Seatbacks .................................... 15
Head Restraints .......................................... 18
Seatback Latches ........................................ 19
Center Seat ................................................ 19
Rear Seats .................................................... 20
Rear Seat Operation (Full Bench) ............... 20
Rear Seat Operation (Split Bench) .............. 21
Safety Belts .................................................. 22
Safety Belts: They Are for Everyone ........... 22
Questions and Answers About
Safety Belts ............................................. 26
How to Wear Safety Belts Properly ............. 27
Driver Position ............................................. 28
Shoulder Belt Height Adjustment ................. 35
Safety Belt Use During Pregnancy .............. 36
Right Front Passenger Position ................... 37
Center Front Passenger Position
(Regular Cab) .......................................... 37
Center Front Passenger Position
(Crew and Extended Cab) ....................... 38
Rear Seat Passengers ................................ 39
Rear Safety Belt Comfort Guides ................ 41
Safety Belt Pretensioners ............................ 44
Safety Belt Extender ................................... 44
Child Restraints ............................................ 45
Older Children ............................................. 45
Infants and Young Children ......................... 48
Child Restraint Systems .............................. 51
Where to Put the Restraint .......................... 56
Lower Anchors and Tethers for
Children (LATCH) .................................... 58
Securing a Child Restraint in a Rear
Seat Position ........................................... 67
Securing a Child Restraint in the Center
Front Seat Position .................................. 69
Securing a Child Restraint in the Right
Front Seat Position (With Airbag
Off Switch) ............................................... 70
Section 1 Seats and Restraint Systems
7

Securing a Child Restraint in the Right
Front Seat Position (With Passenger
Sensing System) ...................................... 76
Securing a Child Restraint in the Right
Front Seat Position (Crew Cab)
(Heavy Duty Crew Cab Only) ................... 80
Airbag System .............................................. 83
Where Are the Airbags? .............................. 86
When Should an Airbag Inflate? .................. 89
What Makes an Airbag Inflate? ................... 91
How Does an Airbag Restrain? ................... 91
What Will You See After an
Airbag Inflates? ........................................ 92
Airbag Off Switch ........................................ 93
Passenger Sensing System ......................... 97
Servicing Your Airbag-Equipped Vehicle .... 102
Adding Equipment to Your
Airbag-Equipped Vehicle ........................ 102
Restraint System Check ............................. 104
Checking the Restraint Systems ................ 104
Replacing Restraint System Parts After
a Crash ................................................. 105
Section 1 Seats and Restraint Systems
8

Front Seats
Manual Seats
{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.
To move a manual seat forward or rearward:
1. Lift the bar to unlock
the seat.
2. Slide the seat to
where you want it
and release the bar.
Try to move the seat with your body to be sure
the seat is locked in place.
9

Power Seats
On a vehicle with power seats, the controls used
to operate them are located on the outboard
side of the seats. To adjust the seat, do any of
the following:
•Move the seat forward or rearward by sliding
the control forward or rearward.
•Raise or lower the front part of the seat
cushion by moving the front of the control up
or down.
•Raise or lower the rear part of the seat
cushion by moving the rear of the control up
or down.
•Raise or lower the entire seat by moving the
entire control up or down.
On seats with power reclining seatbacks, the
control is located behind the power seat control on
the outboard side of the seats. See “Power
Reclining Seatbacks” under Reclining Seatbacks
on page 15.
A vehicle with a memory function allows seat
settings to be saved and recalled. See Memory
Seat, Mirrors, and Pedals on page 13 for
more information.
Driver’s Seat with Power Seat Control, Power
Recline, and Power Lumbar shown
10

Manual Lumbar
If your vehicle has this feature, the knob is
located on the front of the driver seat lower
cushion on the outboard side. Turn the knob
forward to increase, and rearward to decrease
lumbar support.
Power Lumbar
If the seats have power lumbar, the controls used
to operate this feature are located on the
outboard side of the seats.
•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.
11

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 13
for 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.
Heated Seats On vehicles with heated
front seats, the controls
are located on the
driver’s and passenger’s
doors, near the door
handle.
I(Heated Seatback): Press this button to turn
on the heated 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
seatback off. Indicator lights below the button show
the level of heat selected: three for high, two for
medium, and one for low.
J(Heated Seat and Seatback): Press this
button 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 above the button will show the level
of heat selected: three for high, two for medium,
and one for low.
The heated seats will be canceled ten seconds
after the ignition is turned off. If you want to
use the heated seat feature after you restart your
vehicle, you will need to press the appropriate
heated seat or seatback button again.
12

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 your positions in memory, do the
following:
1. Adjust the driver’s seat, including the seatback
recliner and lumbar, both outside mirrors, and
the throttle and brake pedals to a comfortable
position.
See Outside Power Mirrors on page 176 and
Adjustable Throttle and Brake Pedal on
page 136 for more information.
Not all mirrors will have the ability to save and
recall their positions.
Not all adjustable throttles and brake pedals
will have the ability to save and recall their
positions.
2. Press and hold button 1 until two beeps are
heard indicating 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 PARK (P). 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” under DIC Vehicle
Customization (With DIC Buttons) on page 289
for more information.
13

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.
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 PARK (P), 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” under
DIC Vehicle Customization (With DIC Buttons)
on page 289 for 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 289.
14

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 the 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.
15

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 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.
16

{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. 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.
17

Head Restraints
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.
Pull the head restraint
up to raise it. To lower
the head restraint,
press the release
button, located on the
top of the seatback,
while you push the head
restraint down.
The second row seats have head rests that can
be adjusted up and down.
18

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.
{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.
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.
For information on safety belts for this position,
see Center Front Passenger Position (Regular
Cab) on page 37 or Center Front Passenger
Position (Crew and Extended Cab) on page 38.
19

Rear Seats
Rear Seat Operation (Full Bench)
Folding the Rear Seat
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. 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.
20