light GMC SIERRA CLASSIC 2007 Owners Manual

Seats and Restraint Systems
....................... 7
Front Seats
.............................................. 9
Rear Seats
............................................. 19
Safety Belts
............................................ 22
Child Restraints
...................................... 44
Airbag System
........................................ 91
Restraint System Check
....................... 111
Features and Controls
.............................. 113
Keys
..................................................... 115
Doors and Locks
.................................. 120
Windows
............................................... 129
Theft-Deterrent Systems
....................... 131
Starting and Operating Your Vehicle
..... 134
Mirrors
.................................................. 176OnStar®System
................................... 189
Universal Home Remote System
.......... 191
Storage Areas
...................................... 202
Sunroof
................................................ 205
Instrument Panel
....................................... 207
Instrument Panel Overview
................... 210
Climate Controls
................................... 230
Warning Lights, Gages, and Indicators
.... 244
Driver Information Center (DIC)
............ 265
Audio System(s)
................................... 289
Driving Your Vehicle
................................. 355
Your Driving, the Road, and
Your Vehicle
..................................... 356
Towing
................................................. 423
2007 GMC Sierra Classic Owner ManualM
1

Vehicle Damage Warnings
Also, in this manual you will nd 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 specic component,
control, message, gage, or indicator.
If you need help guring out a specic 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

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.
11

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.
12

Your vehicle has a light
that comes on as a
reminder to buckle up.
SeeSafety Belt
Reminder Light on
page 247.
In most states and in all Canadian provinces, the
law says to wear safety belts. Here is why:
They work.
You never know if you will be in a crash. If you do
have a crash, you do not know if it will be a
bad one.
A few crashes are mild, and some crashes can be
so serious that even buckled up, a person
would not survive. But most crashes are in
between. In many of them, people who buckle up
can survive and sometimes walk away. Without
belts they could have been badly hurt or killed.
After more than 40 years of safety belts in
vehicles, the facts are clear. In most crashes
buckling up does matter... a lot!Why Safety Belts Work
When you ride in or on anything, you go as fast
as it goes.
Take the simplest vehicle. Suppose it is just a
seat on wheels.
23

3. 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.
4. Push the latch plate into the buckle until it
clicks.
Pull up on the latch plate to make sure it is
secure. If the belt is not long enough,
seeSafety Belt Extender on page 43.Make sure the release button on the buckle is
positioned so you would be able to unbuckle
the safety belt quickly if you ever had to.
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.
28

Lap-Shoulder Belt
All rear seat positions have lap-shoulder belts.
Here is how to wear one properly.
1. Pick up the latch plate and pull the belt across
you. Do not let it get twisted.
The 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.
2. Push the latch plate into the buckle until it
clicks.Pull up on the latch plate to make sure it is
secure.
When the shoulder belt is pulled out all the
way, it will lock. If it does, let it go back all the
way and start again.
If the belt is not long enough, seeSafety Belt
Extender on page 43.
Make sure the release button on the buckle is
positioned so you would be able to unbuckle
the safety belt quickly if you ever had to.
3. To make the lap part tight, pull up on the
shoulder part.
39

{CAUTION:
A child can be seriously injured or killed
in a crash if the child is not properly
secured in the child restraint. Make sure
the child is properly secured, following
the instructions that came with that
restraint.
Because there are different systems, it is important
to refer to the instructions that come with the
restraint. A child can be endangered in a crash if
the child is not properly secured in the child
restraint.
Where to Put the Restraint
Accident statistics show that children are safer
if they are restrained in the rear rather than
the front seat.
We recommend that child restraints be secured in
a rear seat including an infant riding in a
rear-facing infant seat, a child riding in a
forward-facing child seat and an older child riding
in a booster seat.
Your vehicle may have a label on your sun visor
that says, “Never put a rear-facing child seat in the
front.” This is because the risk to the rear-facing
child is so great, if the airbag deploys.
Never put a child in a rear-facing child restraint in
the right front passenger seat unless your
vehicle has the passenger sensing system or an
airbag off switch and the passenger airbag
status indicator or the airbag off light shows off.
55

Securing a Child Restraint in the
Right Front Seat Position
(Regular and Extended Cab)
(With Airbag Off Switch)
Your vehicle has a right front passenger airbag. A
rear seat is a safer place to secure a forward-facing
child restraint. SeeWhere to Put the Restraint
on page 55.
If your instrument panel has one of the switches
pictured in the following illustrations, your
vehicle has an airbag off switch that you can use
to manually turn off the right front passenger’s
airbag.Your switch may vary slightly. SeeAirbag Off
Switch on page 100for more on this, including
important safety information and illustrations
of alternate switch designs.
United StatesCanada
78

Never put a rear facing child restraint in the right
front passenger’s seat unless the airbag is off.
Here is why:
{CAUTION:
A child in a rear-facing child restraint can
be seriously injured or killed if the right
front passenger’s airbag inates. This is
because the back of the rear-facing child
restraint would be very close to the
inating airbag. Be sure the airbag is off
before using a rear-facing child restraint in
the right front seat position. If you secure a
forward-facing child restraint in the right
front seat, always move the right front
passenger seat as far back as it will go.
A rear seat is a safer place to secure a forward
facing child restraint. SeeWhere to Put the
Restraint on page 55. If you need to secure a
forward-facing child restraint in the right front seat
position, move the seat as far back as it will gobefore securing a forward-facing child restraint.
SeeManual Seats on page 9orPower Seats
on page 10.
{CAUTION:
If the airbag readiness light in the
instrument panel cluster ever comes on
when you have turned off the airbag, it
means that something may be wrong with
the airbag system. The right front
passenger’s airbag could inate even
though the switch is off. If this ever
happens, have the vehicle serviced
promptly. Until you have the vehicle
serviced, do not let anyone whom the
national government has identied as a
member of a passenger airbag risk group
sit in the right front passenger’s position
(for example, do not secure a rear-facing
child restraint in the right front
passenger’s seat). SeeAirbag Off Switch
on page 100.
80