2003 GMC SONOMA seats

Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-3
Rear Seats
............................................... 1-9
Safety Belts
.............................................1-10
Child Restraints
.......................................1-30
Air Bag System
.......................................1-54
Restraint System Check
............................1-64
Features and Controls..................................... 2-1
Keys
........................................................ 2-3
Doors and Locks
....................................... 2-8
Windows
.................................................2-14
Theft-Deterrent Systems
............................2-17
Starting and Operating Your Vehicle
...........2-20
Mirrors
....................................................2-39
Storage Areas
.........................................2-41
Sunroof
..................................................2-52
Vehicle Personalization
.............................2-54
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-2
Climate Controls
......................................3-17
Warning Lights, Gages and Indicators
.........3-20
Audio System(s)
.......................................3-36
Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
...................................................4-42Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-4
Checking Things Under the Hood
................. 5-8
Rear Axle
...............................................5-47
Four-Wheel Drive
.....................................5-48
Front Axle
...............................................5-49
Bulb Replacement
....................................5-50
Windshield Wiper Blade Replacement
.........5-56
Tires
......................................................5-58
Appearance Care
.....................................5-79
Vehicle Identification
.................................5-87
Electrical System
......................................5-88
Capacities and Specifications
.....................5-94
Normal Maintenance Replacement Parts
......5-96
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance Information.................... 7-1
Customer Assistance Information
.................. 7-2
Reporting Safety Defects
............................ 7-8
Index................................................................ 1
2003 GMC Sonoma Owner ManualM
2003 - Sonoma Owner Manual

Vehicle Damage Warnings
Also, in this book you willfind these notices:
Notice:These mean there is something that could
damage your vehicle.
A notice will tell you about something that can damage
your vehicle. Many times, this damage would not be
covered by your warranty, and it could be costly. But the
notice will tell you 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.
You’ll also see warning labels on your vehicle. They use
the same words, CAUTION or NOTICE.
Vehicle Symbols
Your vehicle has components and labels that use
symbols instead of text. Symbols, used on your vehicle,
are shown along with the text describing the operation
or information relating to a specific component, control,
message, gage or indicator.
If you need helpfiguring out a specificnameofa
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
2003 - Sonoma OM

Front Seats......................................................1-3
Manual Seats................................................1-3
Power Seats..................................................1-4
Manual Lumbar..............................................1-4
Power Lumbar ...............................................1-5
Heated Seats.................................................1-5
Reclining Seatbacks........................................1-6
Head Restraints.............................................1-7
Seatback Latches...........................................1-8
Rear Seats.......................................................1-9
Rear Seat Operation.......................................1-9
Jump Seat...................................................1-10
Safety Belts...................................................1-10
Safety Belts: They Are for Everyone................1-10
Questions and Answers About Safety Belts......1-15
How to Wear Safety Belts Properly.................1-15
Driver Position..............................................1-16
Safety Belt Use During Pregnancy..................1-22
Right Front Passenger Position.......................1-23
Center Passenger Position.............................1-23
Rear Seat Passengers (Extended Cab
Jump Seat)..............................................1-25
Rear Seat Passengers (Crew Cab
®) ................1-26
Safety Belt Extender.....................................1-29Child Restraints.............................................1-30
Older Children..............................................1-30
Infants and Young Children............................1-32
Child Restraint Systems.................................1-36
Where to Put the Restraint (Regular Cab
and Extended Cab Pickup).........................1-39
Where to Put the Restraint
(Crew Cab
®Pickup)...................................1-40
Top Strap....................................................1-41
Top Strap Anchor Location.............................1-43
Lower Anchorages and Top Tethers for
Children (LATCH System)...........................1-44
Securing a Child Restraint Designed for
the LATCH System....................................1-46
Securing a Child Restraint in a Rear
Outside Seat Position................................1-46
Securing a Child Restraint in a Center
Seat Position............................................1-49
Securing a Child Restraint in the Right
Front Seat Position....................................1-49
Air Bag System..............................................1-54
Where Are the Air Bags?
...............................1-56
When Should an Air Bag Inate?
....................1-57
What Makes an Air Bag Inate?
.....................1-58
Section 1 Seats and Restraint Systems
1-1
2003 - Sonoma OM

How Does an Air Bag Restrain?.....................1-58
What Will You See After an Air Bag Inates? . . .1-58
Air Bag Off Switch........................................1-60
Servicing Your Air Bag-Equipped Vehicle.........1-63
Adding Equipment to Your Air Bag-Equipped
Vehicle....................................................1-63Restraint System Check..................................1-64
Checking Your Restraint Systems...................1-64
Replacing Restraint System Parts
After a Crash............................................1-64
Section 1 Seats and Restraint Systems
1-2
2003 - Sonoma OM

Front Seats
Manual Seats
This section tells you about the seats – How to adjust
them, and fold them up and down.
{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 don’t want to. Adjust the driver’s
seat only when the vehicle is not moving.Move the lever under the front of a manual seat up to
unlock it. 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
2003 - Sonoma OM

Power Seats
If your vehicle has this feature, there will be a control on
the outboard side of the front seat(s).
Horizontal Control:Raise or lower the front of the seat
by raising or lowering the forward edge of the control.
Raise or lower the rear of the seat by raising or lowering
the rear edge of the control. Move the seat forward or
rearward by moving the whole control toward the front or
the rear of the vehicle.Moving the whole control up or down raises or lowers
the whole seat.
Vertical Control:Move the reclining front seatback
forward or rearward by moving the control toward
the front or rear of the vehicle.
Manual Lumbar
If your vehicle has this
feature, there will be a
knob located on the
outboard side of the
driver’s seat.
Turn the knob counterclockwise to increase lumbar
support and clockwise to decrease lumbar support.
1-4
2003 - Sonoma OM

Power Lumbar
If your vehicle has this
feature, there will be a
control located on
the outboard side of
the front seat(s).
Press and hold the front of the control until you have
the desired lumbar support. To decrease lumbar
support, press and hold the rear of the control.
Heated Seats
If your vehicle has this
feature, the controls are
located on the outboard
side of the front seats.
This feature will quickly heat the lower cushion and
lower back of the driver’s and front passenger’s seats
for added comfort.
Press the lower part of the switch to turn the heater on
low. Press the upper part of the switch to turn the
heater on high. Put the switch in the center position to
turn the heater off.
The passenger’s safety belt must be engaged for the
heated seat feature to work on the passenger’s seat.
1-5
2003 - Sonoma OM

Reclining Seatbacks
To adjust a manual
seatback, lift the lever
on the outboard side
of the seat.
Release the lever to lock the seatback where you want
it. To return the seat to an upright position, pull up
on the lever without pushing on the seatback.
If your vehicle is equipped with the vertical power seat
control described inPower Seats on page 1-4,
pressing it rearward allows the seatback to recline.But don’t have a seatback reclined if your vehicle is
moving.
1-6
2003 - Sonoma OM