2005 GMC SIERRA seats

Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-3
Rear Seats
............................................... 1-9
Safety Belts
.............................................1-11
Child Restraints
.......................................1-33
Airbag System
.........................................1-66
Restraint System Check
............................1-82
Features and Controls..................................... 2-1
Keys
........................................................ 2-3
Doors and Locks
....................................... 2-8
Windows
.................................................2-16
Theft-Deterrent Systems
............................2-19
Starting and Operating Your Vehicle
...........2-21
Mirrors
....................................................2-55
OnStar
®System
......................................2-64
HomeLink®Transmitter
.............................2-66
Storage Areas
.........................................2-70
Sunroof
..................................................2-73
Vehicle Personalization
.............................2-74
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-4
Climate Controls
......................................3-21
Warning Lights, Gages, and Indicators
........3-31
Driver Information Center (DIC)
..................3-50
Audio System(s)
.......................................3-69Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and Your Vehicle
........ 4-2
Towing
...................................................4-62
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-4
Fuel
......................................................... 5-6
Checking Things Under the Hood
...............5-12
Rear Axle
...............................................5-58
Four-Wheel Drive
.....................................5-58
Front Axle
...............................................5-60
Noise Control System
...............................5-61
Bulb Replacement
....................................5-62
Windshield Wiper Blade Replacement
.........5-72
Tires
......................................................5-72
Appearance Care
...................................5-112
Vehicle Identication
...............................5-120
Electrical System
....................................5-121
Capacities and Specications
...................5-130
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance and Information.............. 7-1
Customer Assistance and Information
........... 7-2
Reporting Safety Defects
...........................7-10
Index................................................................ 1
2005 GMC Sierra Owner ManualM

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
iv

Front Seats......................................................1-3
Manual Seats................................................1-3
Power Seats..................................................1-4
Power Lumbar...............................................1-5
Heated Seats.................................................1-5
Reclining Seatbacks........................................1-6
Head Restraints.............................................1-8
Seatback Latches...........................................1-8
Rear Seats.......................................................1-9
Rear Seat Operation (Extended Cab)................1-9
Rear Seat Operation (Crew Cab)....................1-10
Safety Belts...................................................1-11
Safety Belts: They Are for Everyone................1-11
Questions and Answers About Safety Belts......1-15
How to Wear Safety Belts Properly.................1-16
Driver Position..............................................1-16
Safety Belt Use During Pregnancy..................1-25
Right Front Passenger Position.......................1-25
Center Passenger Position.............................1-25
Rear Seat Passengers..................................1-27
Rear Safety Belt Comfort Guides for
Children and Small Adults..........................1-30
Safety Belt Extender.....................................1-32Child Restraints.............................................1-33
Older Children..............................................1-33
Infants and Young Children............................1-35
Child Restraint Systems.................................1-39
Where to Put the Restraint.............................1-42
Top Strap....................................................1-43
Top Strap Anchor Location.............................1-45
Lower Anchorages and Top Tethers
for Children (LATCH System)......................1-47
Securing a Child Restraint Designed
for the LATCH System...............................1-49
Securing a Child Restraint in a Rear
Outside Seat Position................................1-50
Securing a Child Restraint in a Center
Rear Seat Position....................................1-52
Securing a Child Restraint in the Center
Front Seat Position....................................1-53
Securing a Child Restraint in the Right
Front Seat Position (Crew Cab)...................1-54
Securing a Child Restraint in the Right Front
Seat Position (Regular and Extended Cab)
(With Airbag Off Switch).............................1-56
Securing a Child Restraint in the Right Front
Seat Position (Regular and Extended Cab)
(With Passenger Sensing System)...............1-62
Section 1 Seats and Restraint Systems
1-1

Airbag System...............................................1-66
Where Are the Airbags?................................1-68
When Should an Airbag Inate?.....................1-69
What Makes an Airbag Inate?.......................1-71
How Does an Airbag Restrain?.......................1-71
What Will You See After an Airbag Inates?.....1-72
Airbag Off Switch..........................................1-73
Passenger Sensing System............................1-76
Servicing Your Airbag-Equipped Vehicle...........1-80
Adding Equipment to Your Airbag-Equipped
Vehicle....................................................1-81Restraint System Check..................................1-82
Checking Your Restraint Systems...................1-82
Replacing Restraint System Parts
After a Crash............................................1-82
Section 1 Seats and Restraint Systems
1-2

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.
If your vehicle has a manual bucket or a split bench
seat, you can adjust it with this lever located at the front
of the seat.
Lift the lever to unlock the seat. Using your body, slide
the seat to where you want it and release the lever.
Try to move the seat with your body to make sure the
seat is locked into place.
1-3

Power SeatsIf your vehicle has a power seat, you can adjust
it with these controls located on the outboard sides
of the seats.
Raise or lower the front of the seat cushion by
raising or lowering the forward edge of the
horizontal control.
Move the seat forward or rearward by moving the
whole horizontal control forward or rearward.
Raise or lower the rear of the seat cushion by
raising or lowering the rear edge of the horizontal
control.
Moving the whole horizontal control up or down
raises or lowers the entire seat cushion.
If your vehicle has power reclining seats, you can use
the vertical control to adjust the angle of the seatback.
Move the reclining front seatback rearward or forward
by moving the control toward the rear or the front of the
vehicle. SeeReclining Seatbacks on page 1-6.
1-4

Power Lumbar
Your vehicle’s seats may be equipped with power
lumbar.
You can increase or
decrease lumbar support
in an area of the lower
seatback with this control,
located on the outboard
sides of the front seat(s).
To increase support, press and hold the front of the
control. To decrease support, press and hold the rear of
the control. Let go of the control when the lower
seatback reaches the desired level of support.
You can also reshape the side wing area of the lower
seatback for more lateral support.
To increase support, press and hold the top of the
control. To decrease support, press and hold the bottom
of the control. Let go of the control when the lower
seatback reaches the desired level of support.Your vehicle may have a memory function which allows
seat settings to be saved and recalled. SeeMemory
Seat on page 2-74for more information.
Heated Seats
If your vehicle is equipped
with 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 be lit to designate the level of heat selected: three for
high, two for medium, and one for low.
The low setting warms the seatback and cushion until
the seat temperature is near body temperature. The
medium and high settings heat the seatback and seat
cushion to a slightly higher temperature. You will be able
to feel heat in about two minutes.
1-5

To heat only the seatback, press the vertical button with
the heated seatback symbol. An indicator light on the
seatback button will be lit 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 front seats will shut off automatically when
the ignition is turned off.Reclining Seatbacks
To adjust the front seatback, lift the manual lever
located on the outboard side of the seat. Release the
lever to lock the seatback where you want it. Lift
the lever again without pushing on the seatback and the
seatback will go to an upright position.
If your vehicle has power seats with a power recliner,
seePower Seats on page 1-4for further information on
how to operate the reclining seatback feature.
1-6