2004 GMC SONOMA service

To contact NHTSA, you may either call the Auto Safety
Hotline toll-free at 1-800-424-9393 (or 366-0123 in
the Washington, D.C. area) or write to:
NHTSA, U.S. Department of Transportation
Washington, D.C. 20590
You can also obtain other information about motor
vehicle safety from the hotline.
Reporting Safety Defects to the
Canadian Government
If you live in Canada, and you believe that your vehicle
has a safety defect, you should immediately notify
Transport Canada, in addition to notifying General
Motors of Canada Limited. You may write to:
Transport Canada
330 Sparks Street
Tower C
Ottawa, Ontario K1A 0N5
Reporting Safety Defects to General
Motors
In addition to notifying NHTSA (or Transport Canada) in
a situation like this, we certainly hope you’ll notify us.
Please call us at 1-800-GMC-8782 (1-800-462-8782), or
write:
Pontiac-GMC Customer Assistance Center
P.O. Box 33172
Detroit, MI 48232-5172
In Canada, please call us at 1-800-263-3777 (English)
or 1-800-263-7854 (French). Or, write:
General Motors of Canada Limited
Customer Communication Centre, 163-005
1908 Colonel Sam Drive
Oshawa, Ontario L1H 8P7
Service Publications Ordering
Information
Service Manuals
Service Manuals have the diagnosis and repair
information on engines, transmission, axle, suspension,
brakes, electrical, steering, body, etc.
RETAIL SELL PRICE: $120.00
7-11

Transmission, Transaxle, Transfer
Case Unit Repair Manual
This manual provides information on unit repair service
procedures, adjustments, and specifications for GM
transmissions, transaxles, and transfer cases.
RETAIL SELL PRICE: $50.00
Service Bulletins
Service Bulletins give technical service information
needed to knowledgeably service General Motors cars
and trucks. Each bulletin contains instructions to
assist in the diagnosis and service of your vehicle.
In Canada, information pertaining to Product Service
Bulletins can be obtained by contacting your General
Motors dealer or by calling 1-800-GM-DRIVE
(1-800-463-7483).
Owner’s Information
Owner publications are written specifically for owners
and intended to provide basic operational information
about the vehicle. The owner’s manual will include
the Maintenance Schedule for all models.
In-Portfolio: Includes a Portfolio, Owner’s Manual, and
Warranty Booklet.
RETAIL SELL PRICE: $35.00
Without Portfolio: Owner’s Manual only.
RETAIL SELL PRICE: $25.00
Current and Past Model Order Forms
Service Publications are available for current and
past model GM vehicles. To request an order form,
please specify year and model name of the vehicle.
ORDER TOLL FREE: 1-800-551-4123
Monday-Friday 8:00 AM - 6:00 PM
Eastern Time
For Credit Card Orders Only
(VISA-MasterCard-Discover), visit Helm, Inc. on the
World Wide Web at: www.helminc.com
Or you can write to:
Helm, Incorporated
P. O. Box 07130
Detroit, MI 48207
Prices are subject to change without notice and without
incurring obligation. Allow ample time for delivery.
Note to Canadian Customers: All listed prices are
quoted in U.S. funds. Canadian residents are to make
checks payable in U.S. funds.
7-12

Audio System(s) (cont.)
Fixed Mast Antenna.....................................3-76
Radio with Cassette and CD.........................3-49
Radio with CD............................................3-39
Radio with Six-Disc CD................................3-59
Setting the Time for Radios with Radio
Data Systems (RDS)................................3-36
Setting the Time for Radios without Radio
Data Systems (RDS)................................3-35
Theft-Deterrent Feature................................3-73
Understanding Radio Reception.....................3-74
XM™ Satellite Radio Antenna System............3-76
Automatic Headlamp System............................3-12
Automatic Transmission
Fluid..........................................................5-19
Operation...................................................2-20
Automatic Transmission Check..........................6-26
Automatic Transmission Shift Lock Control
System Check.............................................6-28
B
Backing Up....................................................4-61
Battery..........................................................5-40
Battery Replacement......................................... 2-6Battery Rundown Protection.............................3-16
Bed Rails......................................................2-41
Before Leaving on a Long Trip.........................4-34
Before You Go Off-Roading..............................4-14
Body Lubrication Service..................................6-27
Brake
Parking......................................................2-25
System Inspection.......................................6-31
System Warning Light..................................3-27
Brake Adjustment............................................5-40
Brake Fluid....................................................5-37
Brake Pedal Travel.........................................5-39
Brake Wear...................................................5-39
Brakes..........................................................5-37
Braking........................................................... 4-6
Braking in Emergencies..................................... 4-8
Break-In, New Vehicle.....................................2-16
Bulb Replacement...........................................5-48
Center High-Mounted Stoplamp (CHMSL)........5-52
Halogen Bulbs............................................5-48
Headlamps.................................................5-49
One-Piece Front Turn Signal Lamps...............5-51
Replacement Bulbs......................................5-54
Taillamps....................................................5-53
Two-Piece Front Turn Signal Lamps...............5-51
Buying New Tires...........................................5-70
2

C
California Fuel.................................................. 5-5
Canada........................................................... 7-4
Canadian Owners................................................ ii
Canadian Roadside Assistance........................... 7-7
Capacities and Specifications..........................5-101
Carbon Monoxide...................4-38, 4-55, 2-11, 2-29
Care of
Safety Belts................................................5-89
Your Cassette Tape Player............................3-74
Your CD Player...........................................3-76
Your CDs ...................................................3-75
Cassette Tape Messages.................................3-56
Cassette Tape Player Service...........................6-25
CD Adapter Kits.............................................3-56
CD Messages................................3-48, 3-58, 3-73
Center High-Mounted Stoplamp (CHMSL)...........5-52
Center Passenger Position, Safety Belts.............1-21
Certification/Tire Label.....................................4-49
Chains, Tires..................................................5-74
Charging System Light....................................3-26
Check
Engine Light...............................................3-29
Gages Warning Light...................................3-34
Checking Brake Fluid......................................5-38
Checking Coolant............................................5-25
Checking Engine Oil........................................5-13
Checking the Automatic Transmission
Fluid Level.................................................5-21Checking Things Under the Hood......................5-10
Checking Your Restraint Systems......................1-53
Chemical Paint Spotting...................................5-92
Child Restraints
Child Restraint Systems...............................1-33
Infants and Young Children...........................1-29
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-39
Older Children.............................................1-27
Securing a Child Restraint Designed for
the LATCH System...................................1-41
Securing a Child Restraint in a Center
Seat Position...........................................1-43
Securing a Child Restraint in a Rear
Outside Seat Position...............................1-41
Securing a Child Restraint in the Right
Front Seat Position...................................1-44
Top Strap...................................................1-37
Top Strap Anchor Location............................1-38
Where to Put the Restraint...........................1-36
Cigarette Lighter.............................................3-17
Cleaning
Inside of Your Vehicle..................................5-86
Outside of Your Vehicle................................5-89
Underbody Maintenance...............................5-92
Weatherstrips..............................................5-89
Cleaning Aluminum Wheels..............................5-91
Cleaning Exterior Lamps/Lenses.......................5-90
Cleaning Fabric/Carpet....................................5-86
Cleaning Glass Surfaces..................................5-88
3

Cleaning Interior Plastic Components.................5-88
Cleaning Leather............................................5-88
Cleaning the Mirror.........................................2-31
Cleaning the Photocells...................................2-31
Cleaning the Top of the Instrument Panel...........5-88
Cleaning the Windshield and Wiper Blades.........5-91
Cleaning Tires................................................5-91
Cleaning Vinyl................................................5-88
Cleaning Wood Panels....................................5-88
Climate Control System...................................3-18
Outlet Adjustment........................................3-20
Compact Spare Tire........................................5-85
Content Theft-Deferrent....................................2-14
Control of a Vehicle.......................................... 4-5
Coolant
Engine Temperature Gage............................3-28
Heater, Engine............................................2-19
Cooling System..............................................5-28
Cruise Control.................................................. 3-9
Current and Past Model Order Forms................7-12
Customer Assistance Information
Courtesy Transportation.................................. 7-7
Customer Assistance for Text Telephone
(TTY) Users.............................................. 7-4
Customer Assistance Offices........................... 7-4
Customer Satisfaction Procedure..................... 7-2
GM Mobility Program for Persons with
Disabilities................................................ 7-5
Reporting Safety Defects to General Motors....7-11Customer Assistance Information (cont.)
Reporting Safety Defects to the Canadian
Government............................................7-11
Reporting Safety Defects to the United States
Government............................................7-10
Roadside Assistance Program......................... 7-6
Service Publications Ordering Information........7-11
D
Daytime Running Lamps..................................3-13
Defensive Driving............................................. 4-2
Defogging and Defrosting.................................3-19
Doing Your Own Service Work........................... 5-3
Dome Lamp...................................................3-16
Door
Locks.......................................................... 2-7
Power Door Locks......................................... 2-8
Programmable Automatic Door Locks............... 2-8
Rear Door Security Locks.............................2-10
Driver
Position, Safety Belt.....................................1-14
Driver Information Center (DIC).........................2-38
Driving
At Night.....................................................4-27
City...........................................................4-32
Defensive..................................................... 4-2
Drunken....................................................... 4-2
Freeway.....................................................4-33
4

Driving (cont.)
Hill and Mountain Roads..............................4-36
In Rain and on Wet Roads...........................4-29
Winter........................................................4-38
Driving Across an Incline..................................4-22
Driving Downhill..............................................4-21
Driving in Mud, Sand, Snow or Ice....................4-25
Driving in Water..............................................4-26
Driving On Grades..........................................4-62
Driving on Off-Road Hills.................................4-18
Driving on Snow or Ice....................................4-39
Driving Through Deep Standing Water...............4-31
Driving Through Flowing Water.........................4-31
Driving Uphill..................................................4-19
Driving with a Trailer.......................................4-60
E
Electrical System
Add-On Equipment......................................5-94
Fuses and Circuit Breakers...........................5-95
Headlamps.................................................5-95
Power Windows and Other Power Options......5-95
Windshield Wiper Fuses...............................5-95
Emissions Inspection and
Maintenance Programs.................................3-31Engine
Air Cleaner/Filter.........................................5-18
Battery.......................................................5-40
Check and Service Engine Soon Light............3-29
Coolant......................................................5-23
Coolant Heater............................................2-19
Coolant Temperature Gage...........................3-28
Cooling System Inspection............................6-30
Drive Belt Routing.......................................6-35
Engine Compartment Overview......................5-12
Exhaust.....................................................2-29
Fan Noise..................................................5-35
Oil .............................................................5-13
Overheating................................................5-26
Starting......................................................2-18
Engine Compartment Fuse Block......................5-98
Engine Coolant Level Check.............................6-25
Engine Oil Additives........................................5-16
Engine Oil Level Check...................................6-25
Engine Speed Control.....................................2-19
Entry Lighting.................................................3-15
Environmental Concerns..................................4-15
Event Data Records (EDR)................................ 7-9
Exit Lighting...................................................3-15
Express Down Window....................................2-13
Extender, Safety Belt.......................................1-26
Exterior Lamps...............................................3-11
5

Inspection (cont.)
Exhaust System..........................................6-30
Fuel System...............................................6-30
Part C - Periodic Maintenance.......................6-30
Steering, Suspension and Front Drive Axle
Boot and Seal.........................................6-30
Throttle System...........................................6-31
Transfer Case and Front Axle
(Four-Wheel Drive)...................................6-31
Installing a Garage Door Opener.......................2-34
Instrument Panel
Cluster.......................................................3-22
Overview..................................................... 3-2
Instrument Panel Brightness.............................3-15
Instrument Panel Fuse Block............................5-96
Interior Lamps................................................3-15
J
Jump Starting.................................................5-41
K
Key Lock Cylinders Service..............................6-27
Keyless Entry System....................................... 2-4
Keys............................................................... 2-2
L
Lamps
Exterior......................................................3-11
Interior.......................................................3-15
Lamps On Reminder.......................................3-13
Lap Belt........................................................1-21
Lap-Shoulder Belt...........................................1-14
LATCH System
Child Restraints...........................................1-39
Securing a Child Restraint Designed for the
LATCH System........................................1-41
Leaving Your Vehicle.......................................2-10
Leaving Your Vehicle With the Engine Running . . . 2-27
Light
Air Bag Readiness.......................................3-25
Anti-Lock Brake System Warning...................3-28
Brake System Warning.................................3-27
Charging System.........................................3-26
Check Gages Warning.................................3-34
Low Fuel Warning.......................................3-35
Malfunction Indicator....................................3-29
Safety Belt Reminder...................................3-24
Security.....................................................3-33
Service Four-Wheel-Drive Warning Light.........3-33
Loading Your Vehicle.......................................4-45
Loading Your Vehicle for Off-Road Driving..........4-14
8

Locking Rear Axle............................................ 4-8
Lockout Protection..........................................2-10
Locks
Door........................................................... 2-7
Leaving Your Vehicle....................................2-10
Lockout Protection.......................................2-10
Power Door.................................................. 2-8
Programmable Automatic Door Locks............... 2-8
Rear Door Security Locks.............................2-10
Long Trip/Highway Definition.............................. 6-6
Long Trip/Highway Intervals............................... 6-6
Long Trip/Highway Scheduled Maintenance........6-17
Loss of Control...............................................4-13
Low Fuel Warning Light...................................3-35
Luggage Carrier..............................................2-40
Lumbar
Power Controls............................................. 1-4
M
Maintenance Schedule
At Each Fuel Fill.........................................6-25
At Least Four Times a Year..........................6-27
At Least Once a Month................................6-25
At Least Once a Year..................................6-27
At Least Twice a Year..................................6-26
Brake System Inspection..............................6-31
Engine Cooling System Inspection.................6-30
Exhaust System Inspection...........................6-30Maintenance Schedule (cont.)
Fuel System Inspection................................6-30
How This Section is Organized....................... 6-3
Introduction.................................................. 6-2
Long Trip/Highway Scheduled Maintenance.....6-17
Maintenance Requirements............................. 6-2
Normal Maintenance Replacement Parts.........6-34
Part A - Scheduled Maintenance Services......... 6-4
Part B - Owner Checks and Services.............6-25
Part C - Periodic Maintenance Inspections......6-30
Part D - Recommended Fluids and
Lubricants...............................................6-32
Part E - Maintenance Record........................6-36
Selecting the Right Schedule.......................... 6-5
Short Trip/City Scheduled Maintenance............. 6-6
Steering, Suspension and Front Drive Axle
Boot and Seal Inspection..........................6-30
Throttle System Inspection............................6-31
Transfer Case and Front Axle (Four-Wheel
Drive) Inspection......................................6-31
Using Your................................................... 6-4
Your Vehicle and the Environment................... 6-2
Maintenance When Trailer Towing.....................4-63
Making Turns.................................................4-61
Malfunction Indicator Light................................3-29
Manual Seats................................................... 1-2
Manual Windows............................................2-12
Manually Closing the Sunroof...........................2-43
Matching Transmitter(s) to Your Vehicle............... 2-5
9