tow 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

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.
16

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.
19

Rear Seat Operation (Crew Cab)
The second row seat is a 60/40 split seat. Either
side of the rear seat may be ipped and folded for
added cargo space.
Make sure that nothing is under or in front of the
seat and that the head restraints are completely
lowered.
To ip and fold the seat, do the following:
1. Pull up on the strap
loop at the rear of
the seat cushion.
Then, pull the
seat cushion up and
ip it forward.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.
2. After folding the seat cushion fully forward, pull
the seatback forward until it is at. If the
seatback cannot fold at because it interferes
with the cushion, try moving the front seat
forward and/or bringing the front seat
more upright. The lever at the base of the
seat must be turned rearward to release the
seatback.
20

{CAUTION:
Never do this.
Here two children are wearing the same
belt. The belt can not properly spread the
impact forces. In a crash, the two children
can be crushed together and seriously
injured. A belt must be used by only one
person at a time.
Q:What if a child is wearing a lap-shoulder
belt, but the child is so small that the
shoulder belt is very close to the child’s
face or neck?
A:If the child is sitting in a seat next to a
window, move the child toward the center of
the vehicle. Also seeRear Safety Belt
Comfort Guides on page 41. If the child is
sitting in the center rear seat passenger
position, move the child toward the safety belt
buckle. In either case, be sure that the
shoulder belt still is on the child’s shoulder, so
that in a crash the child’s upper body would
have the restraint the belts provide.
45

{CAUTION:
The body structure of a young child is
quite unlike that of an adult or older child,
for whom the safety belts are designed. A
young child’s hip bones are still so small
that the vehicle’s regular safety belt may
not remain low on the hip bones, as it
should. Instead, it may settle up around
the child’s abdomen. In a crash, the belt
would apply force on a body area that is
unprotected by any bony structure. This
alone could cause serious or fatal injuries.
Young children always should be secured
in appropriate child restraints.
Child Restraint Systems
An infant car bed (A), a special bed made for use
in a motor vehicle, is an infant restraint system
designed to restrain or position a child on a
continuous at surface. Make sure that the infant’s
head rests toward the center of the vehicle.
51

{CAUTION:
Children can be seriously injured or
strangled if a shoulder belt is wrapped
around their neck and the safety belt
continues to tighten. Secure any unused
safety belts behind the child restraint so
children cannot reach them. Pull the
shoulder belt all the way out of the
retractor to set the lock, if your vehicle
has one, after the child restraint has been
installed. Be sure to follow the
instructions of the child restraint
manufacturer.
Notice:Contact between the child restraint or
the LATCH attachment parts and the vehicle’s
safety belt assembly may cause damage to
these parts. Make sure when securing unused
safety belts behind the child restraint that
there is no contact between the child restraint
or the LATCH attachment parts and the
vehicle’s safety belt assembly.Folding an empty rear seat with the safety
belts secured may cause damage to the safety
belt or the seat. When removing the child
restraint, always remember to return the safety
belts to their normal, stowed position before
folding the rear seat.
Regular Cab Models
1. If the child restraint manufacturer recommends
that the top tether be attached, attach and
tighten the top tether to the top tether anchor,
if your vehicle has one. Refer to the child
restraint instructions and the following steps:
1.1. Pull the passenger seatback forward
by pulling the recliner handle upward to
access the top tether anchor. See
Reclining Seatbacks on page 15for
additional information.
1.2. Find the top tether anchor.
1.3. Remove the trim cover to expose the
anchor.
1.4. Route, attach, and tighten the top tether
according to your child restraint
instructions and the following
instructions:
65

How Does an Airbag Restrain?
In moderate to severe frontal or near-frontal
collisions, even belted occupants can contact the
steering wheel or the instrument panel. The airbag
supplements the protection provided by safety
belts. Airbags distribute the force of the impact
more evenly over the occupant’s upper body,
stopping the occupant more gradually. But airbags
would not help you in many types of collisions,
including rollovers, rear impacts, and many side
impacts, primarily because an occupant’s motion is
not toward those airbags. Airbags should never be
regarded as anything more than a supplement to
safety belts, and then only in moderate to severe
frontal or near-frontal collisions.
What Will You See After an Airbag
Inates?
After an airbag inates, it quickly deates, so
quickly that some people may not even realize the
airbag inated. Some components of the airbag
module — the steering wheel hub for the driver’s
airbag or the instrument panel for the right
front passenger’s bag — may be hot for a short
time. The parts of the airbag that come into contact
with you may be warm, but not too hot to touch.
There will be some smoke and dust coming
from the vents in the deated airbags. Airbag
ination does not prevent the driver from seeing
out of the windshield or being able to steer
the vehicle, nor does it stop people from leaving
the vehicle.
98

Aftermarket equipment, such as seat covers, can
affect how well the passenger sensing system
operates. You may want to consider not using seat
covers or other aftermarket equipment if your
vehicle has the passenger sensing system. See
Adding Equipment to Your Airbag-Equipped
Vehicle on page 109for more information about
modications that can affect how the system
operates.
{CAUTION:
Stowing of articles under the passenger’s
seat or between the passenger’s seat
cushion and seatback may interfere with
the proper operation of the passenger
sensing system.
Servicing Your Airbag-Equipped
Vehicle
Airbags affect how your vehicle should be
serviced. There are parts of the airbag system in
several places around your vehicle. You do
not want the system to inate while someone is
working on your vehicle. Your dealer and the
service manual have information about servicing
your vehicle and the airbag system. To purchase a
service manual, seeService Publications
Ordering Information on page 657.
108

Keys............................................................ 115
Remote Keyless Entry System.................. 116
Remote Keyless Entry System
Operation............................................... 117
Doors and Locks........................................ 120
Door Locks................................................ 120
Power Door Locks..................................... 121
Delayed Locking........................................ 122
Programmable Automatic Door Locks........ 123
Rear Door Security Locks (Crew Cab)....... 126
Lockout Protection..................................... 126
Rear Doors............................................... 126
Tailgate..................................................... 127
Windows...................................................... 129
Manual Windows....................................... 129
Power Windows........................................ 130
Swing-Out Windows.................................. 131
Sliding Rear Window................................. 131
Sun Visors................................................ 131Theft-Deterrent Systems............................. 131
Content Theft-Deterrent............................. 131
Passlock
®.................................................. 133
Starting and Operating Your Vehicle......... 134
New Vehicle Break-In................................ 134
Ignition Positions....................................... 135
Retained Accessory Power (RAP)............. 137
Starting the Engine.................................... 137
Engine Coolant Heater.............................. 139
Automatic Transmission Operation............. 140
Tow/Haul Mode......................................... 147
Manual Transmission Operation................. 149
Four-Wheel Drive...................................... 153
Parking Brake........................................... 169
Shifting Into Park (P)
(Automatic Transmission)....................... 170
Shifting Out of Park (P)
(Automatic Transmission)....................... 172
Parking Over Things That Burn................. 173
Engine Exhaust......................................... 174
Running the Engine While Parked............. 175
Section 2 Features and Controls
113