2008 CHEVROLET SUBURBAN tow

Returning the Seat(s) to the Sitting
Position
To return the seat to the sitting position, do the following:
1. Pull the seat down until it latches to the oor.
The seatback cannot be raised if the seat is
not latched to the oor.
{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.
2. Lift the seatback and push it rearward. Push and
pull on the seatback to make sure it is locked.
Folding and Tumbling the Second Row
Seat(s) from the Third Row Seats or
Outside
{CAUTION:
Using the third row seating position while the
second row is folded, or folded and tumbled,
could cause injury in a sudden stop or crash.
Be sure to return the seat to the passenger
seating position. Push and pull on the seat to
make sure it is locked into place.
To fold and tumble the seat from the third row seats,
if your vehicle has them, do the following:
1. Make sure that there is nothing under, in front of,
or on the 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.
1-24

2. Press the automatic
seat release button
located on the
panel behind the
rear doors.
One press of the button automatically folds the
seatback at and tumbles the seat forward.
There will be a slight delay between the folding
of the seatback and the tumbling of the seat.
Third Row Seat
If the vehicle has a third row seat, the seatback(s)
can be folded and the entire seat can be tumbled,
or removed from the vehicle.
Folding the Seatback(s)
To fold the seatback, do the following:
1. Open the liftgate to access the controls for the seat.
2. Remove all items on the seat cushion.
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.
3. Lift the release lever,
located on the bottom
rear of the seatback
on the outboard side
of the seat, and the
seatback will fold forward. Driver’s Side Rear Panel
Button shown
1-25

Notice:Do not let the LATCH attachments rub
against the vehicle’s safety belts. This may damage
these parts. If necessary, move buckled safety
belts to avoid rubbing the LATCH attachments.
Do not fold the empty rear seat with a safety belt
buckled. This could damage the safety belt or
the seat. Unbuckle and return the safety belt to
its stowed position.
1. Attach and tighten the lower attachments to the
lower anchors. If the child restraint does not have
lower attachments or the desired seating position
does not have lower anchors, secure the child
restraint with the top tether and the safety belts.
Refer to your child restraint manufacturer
instructions and the instructions in this manual.
1.1. Find the lower anchors for the desired
seating position.
1.2. Put the child restraint on the seat.
1.3. Attach and tighten the lower attachments on
the child restraint to the lower anchors.2. If the child restraint manufacturer recommends that
the top tether be attached, attach and tighten the
top tether to the top tether anchor, if the vehicle has
one. Refer to the child restraint instructions and
the following steps:
2.1. Find the top tether anchor.
2.2. Route, attach and tighten the top tether
according to your child restraint instructions
and the following instructions:
If the position you are
using does not have a
headrest or head restraint
and you are using a
single tether, route the
tether over the seatback.
1-67

5. To tighten the belt, push down on the child restraint,
pull the shoulder portion of the belt to tighten
the lap portion of the belt and feed the shoulder
belt back into the retractor. When installing a
forward-facing child restraint, it may be helpful to
use your knee to push down on the child restraint
as you tighten the belt.6. If the child restraint has a top tether, follow the
child restraint manufacturer’s instructions regarding
the use of the top tether. SeeLower Anchors
and Tethers for Children (LATCH) on page 1-61
for more information.
7. Push and pull the child restraint in different
directions to be sure it is secure.
To remove the child restraint, unbuckle the vehicle safety
belt and let it return to the stowed position. If the top
tether is attached to a top tether anchor, disconnect it.
1-71

What Makes an Airbag Inate?
In a deployment event, the sensing system sends
an electrical signal triggering a release of gas from the
inator. Gas from the inator lls the airbag causing
the bag to break out of the cover and deploy. The
inator, the airbag, and related hardware are all part
of the airbag module.
Frontal airbag modules are located inside the steering
wheel and instrument panel. For vehicles with
roof-rail airbags, there are airbag modules in the
ceiling of the vehicle, near the side windows that
have occupant seating positions.
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. In moderate to severe side
collisions, even belted occupants can contact the
inside of the vehicle.Airbags supplement the protection provided by
safety belts. Frontal airbags distribute the force of the
impact more evenly over the occupant’s upper body,
stopping the occupant more gradually. Roof-rail airbags
distribute the force of the impact more evenly over
the occupant’s upper body.
Rollover capable roof-rail airbags are designed to
help contain the head and chest of occupants in the
outboard seating positions in the rst, second, and
third rows, if equipped with a third row seat. The rollover
capable roof-rail airbags are designed to help reduce
the risk of full or partial ejection in rollover events,
although no system can prevent all such ejections.
But airbags would not help in many types of collisions,
primarily because the occupant’s motion is not
toward those airbags. SeeWhen Should an Airbag
Inflate? on page 1-81for more information.
Airbags should never be regarded as anything more
than a supplement to safety belts.
1-83

If you ever pull the shoulder portion of the belt out all
the way, you will engage the child restraint locking
feature. This may unintentionally cause the passenger
sensing system to turn the airbag(s) off for some
adult size occupants. If this happens, just let the belt
go back all the way and start again.
{CAUTION:
If the airbag readiness light in the instrument
panel cluster ever comes on and stays on,
it means that something may be wrong with
the airbag system. If this ever happens, have
the vehicle serviced promptly, because an
adult-size person sitting in the right front
passenger’s seat may not have the protection
of the airbag(s). SeeAirbag Readiness Light
on page 3-37for more on this, including
important safety information.A thick layer of additional material, such as a blanket
or cushion, or aftermarket equipment such as seat
covers, seat heaters, and seat massagers can affect
how well the passenger sensing system operates.
We recommend that you not use seat covers or other
aftermarket equipment other than any that GM has
approved for your specic vehicle. SeeAdding
Equipment to Your Airbag-Equipped Vehicle on
page 1-90for more information about modications
that can affect how the system operates.
{CAUTION:
Stowing of articles under the passenger seat
or between the passenger seat cushion and
seatback may interfere with the proper
operation of the passenger sensing system.
1-89

Keys...............................................................2-3
Remote Keyless Entry (RKE) System................2-4
Remote Keyless Entry (RKE) System
Operation...................................................2-5
Remote Vehicle Start......................................2-8
Doors and Locks............................................2-10
Door Locks..................................................2-10
Power Door Locks........................................2-10
Delayed Locking...........................................2-11
Programmable Automatic Door Locks..............2-11
Rear Door Security Locks..............................2-11
Lockout Protection........................................2-12
Liftgate/Liftglass............................................2-12
Power Liftgate..............................................2-14
Power Running Boards..................................2-17
Windows........................................................2-18
Power Windows............................................2-19
Sun Visors...................................................2-20
Theft-Deterrent Systems..................................2-20
Content Theft-Deterrent.................................2-21
PASS-Key
®III+ Electronic Immobilizer.............2-22
PASS-Key®III+ Electronic Immobilizer
Operation.................................................2-23Starting and Operating Your Vehicle................2-24
New Vehicle Break-In....................................2-24
Ignition Positions..........................................2-25
Retained Accessory Power (RAP)...................2-26
Starting the Engine.......................................2-26
Adjustable Throttle and Brake Pedal................2-28
Engine Coolant Heater..................................2-28
Active Fuel Management™.............................2-29
Automatic Transmission Operation...................2-30
Tow/Haul Mode............................................2-36
Four-Wheel Drive..........................................2-36
Parking Brake..............................................2-42
Shifting Into Park..........................................2-43
Shifting Out of Park......................................2-45
Parking Over Things That Burn.......................2-45
Engine Exhaust............................................2-46
Running the Vehicle While Parked..................2-46
Mirrors...........................................................2-47
Automatic Dimming Rearview Mirror with
OnStar
®, Compass and Temperature
Display....................................................2-47
Automatic Dimming Rearview Mirror with
Compass and Temperature Display..............2-49
Section 2 Features and Controls
2-1

Outside Manual Mirrors..................................2-52
Outside Towing Mirrors..................................2-52
Outside Power Mirrors...................................2-53
Outside Power Foldaway Mirrors.....................2-54
Outside Automatic Dimming Mirror..................2-55
Park Tilt Mirrors............................................2-55
Outside Convex Mirror...................................2-55
Outside Heated Mirrors..................................2-56
Object Detection Systems...............................2-56
Ultrasonic Rear Parking Assist (URPA)............2-56
OnStar
®System.............................................2-59Universal Home Remote System......................2-62
Universal Home Remote System Operation
(With Three Round LED)............................2-63
Storage Areas................................................2-70
Glove Box...................................................2-70
Cupholders..................................................2-70
Center Console Storage.................................2-70
Luggage Carrier...........................................2-71
Rear Storage Area........................................2-72
Rear Seat Armrest........................................2-72
Cargo Cover................................................2-72
Sunroof.........................................................2-73
Section 2 Features and Controls
2-2