2004 GMC SAVANA fuel additives

Service............................................................5-3
Doing Your Own Service Work.........................5-3
Adding Equipment to the Outside of
Your Vehicle..............................................5-4
Fuel................................................................5-4
Gasoline Octane............................................5-4
Gasoline Specications....................................5-5
California Fuel...............................................5-5
Additives.......................................................5-6
Fuels in Foreign Countries...............................5-6
Filling Your Tank............................................5-7
Filling a Portable Fuel Container.......................5-9
Checking Things Under the Hood.....................5-9
Hood Release..............................................5-10
Engine Compartment Overview.......................5-12
Engine Oil...................................................5-13
Engine Air Cleaner/Filter................................5-18
Automatic Transmission Fluid.........................5-19
Engine Coolant.............................................5-22
Radiator Pressure Cap..................................5-25
Engine Overheating.......................................5-25
Cooling System............................................5-28
Engine Fan Noise.........................................5-35
Power Steering Fluid.....................................5-35Windshield Washer Fluid................................5-36
Brakes........................................................5-38
Battery........................................................5-41
Jump Starting...............................................5-42
All-Wheel Drive..............................................5-47
Rear Axle.......................................................5-48
Front Axle......................................................5-49
Noise Control System.....................................5-50
Tampering with Noise Control
System Prohibited.....................................5-50
Bulb Replacement..........................................5-51
Halogen Bulbs..............................................5-51
Headlamps..................................................5-51
Front Turn Signal, Sidemarker and
Parking Lamps..........................................5-53
Taillamps.....................................................5-53
Replacement Bulbs.......................................5-55
Windshield Wiper Blade Replacement..............5-56
Tires..............................................................5-57
Ination - Tire Pressure.................................5-65
Dual Tire Operation.......................................5-66
Tire Inspection and Rotation...........................5-67
Section 5 Service and Appearance Care
5-1

Additives
To provide cleaner air, all gasolines in the United States
are now required to contain additives that will help
prevent engine and fuel system deposits from forming,
allowing your emission control system to work
properly. You should not have to add anything to your
fuel. However, some gasolines contain only the
minimum amount of additive required to meet U.S.
Environmental Protection Agency regulations. General
Motors recommends that you buy gasolines that
are advertised to help keep fuel injectors and intake
valves clean. If your vehicle experiences problems due
to dirty injectors or valves, try a different brand of
gasoline.
Gasolines containing oxygenates, such as ethers and
ethanol, and reformulated gasolines may be available in
your area to contribute to clean air. General Motors
recommends that you use these gasolines, particularly if
they comply with the specications described earlier.
Notice:Your vehicle was not designed for fuel that
contains methanol. Do not use fuel containing
methanol. It can corrode metal parts in your fuel
system and also damage the plastic and rubber
parts. That damage would not be covered under
your warranty.Some gasolines that are not reformulated for
low emissions may contain an octane-enhancing
additive called methylcyclopentadienyl manganese
tricarbonyl (MMT); ask the attendant where you
buy gasoline whether the fuel contains MMT. General
Motors does not recommend the use of such gasolines.
Fuels containing MMT can reduce the life of spark
plugs and the performance of the emission control
system may be affected. The malfunction indicator lamp
may turn on. If this occurs, return to your authorized
GM dealer for service.
Fuels in Foreign Countries
If you plan on driving in another country outside the
United States or Canada, the proper fuel may be hard
to nd. Never use leaded gasoline or any other fuel
not recommended in the previous text on fuel. Costly
repairs caused by use of improper fuel would not
be covered by your warranty.
To check the fuel availability, ask an auto club, or
contact a major oil company that does business in the
country where you will be driving.
5-6

Notice:Use only engine oil identied as meeting
GM Standard GM6094M and showing the American
Petroleum Institute Certied For Gasoline Engines
starburst symbol. Failure to use the recommended
oil can result in engine damage not covered by
your warranty.
GM Goodwrench
®oil meets all the requirements for
your vehicle.
If you are in an area of extreme cold, where the
temperature falls below−20°F (−29°C), it is
recommended that you use either an SAE 5W-30
synthetic oil or an SAE 0W-30 oil. Both will provide
easier cold starting and better protection for your engine
at extremely low temperatures.
Engine Oil Additives
Do not add anything to your oil. The recommended oils
with the starburst symbol that meet GM Standard
GM6094M are all you will need for good performance
and engine protection.
When to Change Engine Oil
(GM Oil Life System)
Your vehicle has a computer system that lets you know
when to change the engine oil and lter. This is
based on engine revolutions and engine temperature,
and not on mileage. Based on driving conditions,
the mileage at which an oil change will be indicated can
vary considerably. For the oil life system to work
properly, you must reset the system every time the oil is
changed.
When the system has calculated that oil life has been
diminished, it will indicate that an oil change is
necessary. A Change Engine Oil light will come on.
Change your oil as soon as possible within the next two
times you stop for fuel. It is possible that, if you are
driving under the best conditions, the oil life system may
not indicate that an oil change is necessary for over a
year. However, your engine oil and lter must be
changed at least once a year and at this time the system
must be reset. Your dealer has GM-trained service
people who will perform this work using genuine GM
parts and reset the system. It is also important to check
your oil regularly and keep it at the proper level.
If the system is ever reset accidentally, you must change
your oil at 3,000 miles (5 000 km) since your last oil
change. Remember to reset the oil life system whenever
the oil is changed.
5-16

A
Accessory Power Outlets.................................3-18
Adding Equipment to Your
Air Bag-Equipped Vehicle.............................1-79
Adding Washer Fluid.......................................5-37
Additional Program Information........................... 7-9
Additives, Fuel................................................. 5-6
Add-On Electrical Equipment...........................5-101
Add-On Equipment..........................................4-37
Adjusting the Speakers
(Balance/Fade)....................3-45, 3-47, 3-52, 3-63
Air Bag
Off Light.....................................................3-29
Readiness Light..........................................3-28
Air Bag System..............................................1-67
Adding Equipment to Your
Air Bag-Equipped Vehicle..........................1-79
Air Bag Off Switch.......................................1-75
How Does an Air Bag Restrain?....................1-73
Servicing Your Air Bag-Equipped Vehicle.........1-78
What Makes an Air Bag Inate?....................1-73
What Will You See After an
Air Bag Inates?......................................1-74
When Should an Air Bag Inate?...................1-71
Where Are the Air Bags?..............................1-70
Air Bag Systems.............................................1-73
Air Cleaner/Filter, Engine.................................5-18
Airbag Sensing and Diagnostic Module (SDM)......... 7-9All Overseas Locations...................................... 7-4
All-Wheel Drive...............................................5-47
All-Wheel Drive (AWD) System.........................2-26
AM ...............................................................3-72
AM-FM Radio.................................................3-43
Antenna, Fixed Mast.......................................3-74
Anti-lock Brake System..................................... 4-7
Anti-Lock Brake, System Warning Light..............3-33
Appearance Care............................................5-92
Care of Safety Belts....................................5-95
Chemical Paint Spotting...............................5-98
Cleaning the Inside of Your Vehicle................5-92
Cleaning the Outside of Your Vehicle..............5-95
Finish Damage............................................5-98
Sheet Metal Damage...................................5-97
Underbody Maintenance...............................5-98
Vehicle Care/Appearance Materials................5-99
Weatherstrips..............................................5-95
Ashtrays........................................................3-18
Audio System(s).............................................3-42
AM-FM Radio.............................................3-43
Care of Your Cassette Tape Player................3-72
Care of Your CD Player...............................3-74
Care of Your CDs........................................3-74
Chime Level Adjustment...............................3-74
Fixed Mast Antenna.....................................3-74
Radio with Cassette and CD.........................3-50
Radio with CD............................................3-46
Radio with Six-Disc CD................................3-61
1

Fluid
Automatic Transmission................................5-19
Power Steering...........................................5-35
Windshield Washer......................................5-36
FM ...............................................................3-72
Following Distance..........................................4-47
Front Axle......................................................5-49
Fuel............................................................... 5-4
Additives...................................................... 5-6
California Fuel.............................................. 5-5
Filling a Portable Fuel Container..................... 5-9
Filling Your Tank........................................... 5-7
Fuels in Foreign Countries.............................. 5-6
Gage.........................................................3-41
Gasoline Octane........................................... 5-4
Gasoline Specications.................................. 5-5
Fuel Regulator................................................2-22
Fuses
Fuses and Circuit Breakers.........................5-102
Windshield Wiper.......................................5-101
G
Gage
Check Gages Warning Light..........................3-41
Engine Coolant Temperature.........................3-34
Fuel..........................................................3-41
Oil Pressure...............................................3-37Gage (cont.)
Speedometer..............................................3-26
Voltmeter Gage...........................................3-31
Gasoline
Octane........................................................ 5-4
Specications............................................... 5-5
GM Mobility Program for Persons with
Disabilities.................................................... 7-5
H
Hazard Warning Flashers................................... 3-6
Headlamp High/Low Beam Changer.................... 3-9
Headlamp Wiring...........................................5-101
Headlamps....................................................5-51
Bulb Replacement.......................................5-51
Front Turn Signal, Sidemarker and
Parking Lamps.........................................5-53
Halogen Bulbs............................................5-51
Highway Hypnosis...........................................4-24
Hill and Mountain Roads..................................4-24
Hitches..........................................................4-45
Hood
Checking Things Under.................................. 5-9
Release.....................................................5-10
Horn............................................................... 3-7
How to Add Coolant to the Coolant
Recovery Tank............................................5-29
6