height GMC SIERRA 2007 Owner's Manual

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.............. 36Right 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

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

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

Driver Position
Lap-Shoulder Belt
The driver has a lap-shoulder belt. Here is how to
wear it properly.
1. Close and lock the door.
2. Adjust the seat so you can sit up straight. To
see how, see “Seats” in the Index.
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 44.
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. Move the shoulder belt height adjuster to the
height that is right for you. Improper shoulder
belt height adjustment could reduce the
effectiveness of the safety belt in a crash. See
Shoulder Belt Height Adjustment on page 35.
28

To unlatch the belt, push the button on the buckle.
The belt should go back out of the way.
Before you close the door, be sure the belt is out
of the way. If you slam the door on it, you can
damage both the belt and your vehicle.
Shoulder Belt Height Adjustment
Shoulder belt height adjusters are available for the
driver and right front passenger seating positions.
Before you begin to drive, move the shoulder
belt adjuster to the height that is right for you.
Adjust the height so that the shoulder portion of
the belt is centered on your shoulder. The
belt should be away from your face and neck, but
not falling off your shoulder. Improper shoulder
belt height adjustment could reduce the
effectiveness of the safety belt in a crash.
To move the adjuster
down for the regular
and crew cabs, squeeze
the buttons (A) on the
sides of the height
adjuster and move the
height adjuster to
the desired position.
Regular and Crew Cab
35

On the extended cabs,
push down on the
release button (A) and
move the height
adjuster to the desired
position.
You can move the adjuster up just by pushing up
on the shoulder belt guide.
After you move the adjuster to where you want it,
try to move it down, without squeezing the
buttons for the regular and crew cabs, or without
pushing the release button for extended cabs,
to make sure it has locked into position.
Safety Belt Use During Pregnancy
Safety belts work for everyone, including pregnant
women. Like all occupants, they are more likely to
be seriously injured if they do not wear safety belts.A pregnant woman should wear a lap-shoulder
belt, and the lap portion should be worn as low
as possible, below the rounding, throughout
the pregnancy.
The best way to protect the fetus is to protect the
mother. When a safety belt is worn properly, it
is more likely that the fetus will not be hurt
in a crash. For pregnant women, as for anyone,
the key to making safety belts effective is wearing
them properly.
Extended Cab
36

Q:What are the different types of add-on
child restraints?
A:Add-on child restraints, which are purchased by
the vehicle’s owner, are available in four basic
types. Selection of a particular restraint should
take into consideration not only the child’s
weight, height, and age but also whether or not
the restraint will be compatible with the motor
vehicle in which it will be used.
For most basic types of child restraints, there
are many different models available. When
purchasing a child restraint, be sure it is
designed to be used in a motor vehicle. If it is,
the restraint will have a label saying that it
meets federal motor vehicle safety standards.
The restraint manufacturer’s instructions that
come with the restraint state the weight and
height limitations for a particular child restraint.
In addition, there are many kinds of restraints
available for children with special needs.
{CAUTION:
Newborn infants need complete support,
including support for the head and neck.
This is necessary because a newborn
infant’s neck is weak and its head weighs
so much compared with the rest of its
body. In a crash, an infant in a rear-facing
seat settles into the restraint, so the crash
forces can be distributed across the
strongest part of an infant’s body, the back
and shoulders. Infants always should be
secured in appropriate infant restraints.
50

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 663.
{CAUTION:
For up to 10 seconds, after the ignition is
turned off and the battery is disconnected,
an airbag can still inate during improper
service. You can be injured if you are
close to an airbag when it inates.
CAUTION: (Continued)
CAUTION: (Continued)
Avoid yellow connectors. They are
probably part of the airbag system. Be
sure to follow proper service procedures,
and make sure the person performing
work for you is qualied to do so.
The airbag system does not need regular
maintenance.
Adding Equipment to Your
Airbag-Equipped Vehicle
Q:Is there anything I might add to the front
or sides of the vehicle that could keep the
airbags from working properly?
A:Yes. If you add things that change your
vehicle’s frame, bumper system, height,
front end or side sheet metal, they may keep
the airbag system from working properly.
Also, the airbag system may not work properly
if you relocate any of the airbag sensors.
102

Two-Tiered Loading
Depending on the model of your pick-up, you can
create an upper load platform by positioning
two or four 2 inches (5 cm) by 6 inches (15 cm)
wooden planks across the width of the pickup box.
The planks must be inserted in the pickup box
depressions. The length of the planks must allow
for at least a 3/4 inch (2 cm) bearing surface
on each end of the plank.
When using this upper load platform, be sure the
load is securely tied down to prevent it from
shifting. The load’s center of gravity should be
positioned in a zone over the rear axle. The zone
is located in the area between the front of each
wheel well and the rear of each wheel well.
The center of gravity height must not extend above
the top of the pickup box areboard.
Any load that extends beyond the vehicle’s
taillamp area must be properly marked according
to local laws and regulations.
Remember not to exceed the Gross Axle Weight
Rating (GAWR) of the front or rear axle.
Add-On Equipment
When you carry removable items, you may need
to put a limit on how many people you carry
inside your vehicle. Be sure to weigh your vehicle
before you buy and install the new equipment.
Notice:Overloading your vehicle may cause
damage. Repairs would not be covered by your
warranty. Do not overload your vehicle.
Remember not to exceed the Gross Axle Weight
Rating (GAWR) of the front or rear axle.
* Equipment Maximum Weight
Ladder Rack and Cargo 750 lbs (340 kg)
Cross Toolbox and Cargo 400 lbs (181 kg)
Side Boxes and Cargo 250 lbs per side (113 kg
per side)
* The combined weight for all rail-mounted equipment
should not exceed 1,000 lbs (454 kg).
431

Brake Pedal Travel
See your dealer/retailer if the brake pedal does
not return to normal height, or if there is a
rapid increase in pedal travel. This could be a sign
that brake service might be required.
Brake Adjustment
Every time you make a brake stop, the brakes
adjust for wear.
Replacing Brake System Parts
The braking system on a vehicle is complex. Its
many parts have to be of top quality and work well
together if the vehicle is to have really good
braking. Your vehicle was designed and tested
with top-quality brake parts. When you replace
parts of the braking system — for example, when
the brake linings wear down and you need
new ones put in — be sure you get new approved
replacement parts. If you do not, the brakesmight not work properly. For example, if someone
puts in brake linings that are wrong for your
vehicle, the balance between the front and rear
brakes can change — for the worse. The braking
performance you have come to expect can
change in many other ways if someone puts in the
wrong replacement brake parts.
Battery
Your vehicle has a maintenance free battery.
When it is time for a new battery, get one that has
the replacement number shown on the original
battery’s label. We recommend an ACDelco
®
replacement battery. SeeEngine Compartment
Overview on page 498for battery location.
Warning:Battery posts, terminals, and related
accessories contain lead and lead compounds,
chemicals known to the State of California
to cause cancer and reproductive harm. Wash
hands after handling.
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