2004 CHEVROLET COLORADO fuel additives

Service............................................................5-3
Doing Your Own Service Work.........................5-4
Adding Equipment to the Outside of
Your Vehicle..............................................5-4
Fuel................................................................5-5
Gasoline Octane............................................5-5
Gasoline Specications....................................5-5
California Fuel...............................................5-6
Additives.......................................................5-6
Fuels in Foreign Countries...............................5-7
Filling Your Tank............................................5-7
Filling a Portable Fuel Container.....................5-10
Checking Things Under the Hood....................5-10
Hood Release..............................................5-11
Engine Compartment Overview.......................5-12
Engine Oil...................................................5-13
Engine Air Cleaner/Filter................................5-18
Automatic Transmission Fluid.........................5-19
Manual Transmission Fluid.............................5-22
Hydraulic Clutch (Manual Transmission)...........5-24
Engine Coolant.............................................5-25
Radiator Pressure Cap..................................5-28Engine Overheating.......................................5-28
Cooling System............................................5-30
Engine Fan Noise.........................................5-36
Power Steering Fluid.....................................5-36
Windshield Washer Fluid................................5-37
Brakes........................................................5-39
Battery........................................................5-42
Jump Starting...............................................5-43
Rear Axle.......................................................5-48
Four-Wheel Drive............................................5-48
Front Axle......................................................5-49
Bulb Replacement..........................................5-50
Halogen Bulbs..............................................5-50
Headlamps..................................................5-50
Front Turn Signal, Sidemarker and Daytime
Running Lamps.........................................5-52
Center High-Mounted Stoplamp (CHMSL).........5-53
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps.........................................5-53
Replacement Bulbs.......................................5-54
Windshield Wiper Blade Replacement..............5-55
Section 5 Service and Appearance Care
5-1

California Fuel
If your vehicle is certied to meet California Emission
Standards (see the underhood emission control label), it
is designed to operate on fuels that meet California
specications. If this fuel is not available in states
adopting California emissions standards, your vehicle will
operate satisfactorily on fuels meeting federal
specications, but emission control system performance
may be affected. The malfunction indicator lamp may turn
on (seeMalfunction Indicator Lamp on page 3-24) and
your vehicle may fail a smog-check test. If this occurs,
return to your authorized GM dealer for diagnosis. If it is
determined that the condition is caused by the type of fuel
used, repairs may not be covered by your warranty.
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.
5-6

You should look for this information on the oil container,
and useonlythose oils that are identied as meeting
GM Standard GM6094M and have the starburst symbol
on the front of the oil container.
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 OIL message 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 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
ABS (Anti-Lock Brake System)..........................3-33
AC (Air Conditioning) OFF...............................3-33
Accessory Power Outlets.................................3-10
Adding Washer Fluid.......................................5-38
Additional Program Information.........................7-10
Additives, Fuel................................................. 5-6
Add-On Electrical Equipment...........................5-103
Add-On Equipment..........................................4-56
Adjusting the Speakers
(Balance/Fade)............................3-38, 3-41, 3-50
After Off-Road Driving.....................................4-27
Air Bag
Off Light.....................................................3-20
Readiness Light..........................................3-19
Air Bag Systems.............................................1-62
Adding Equipment to Your Air Bag-Equipped
Vehicle...................................................1-75
Air Bag Off Switch.......................................1-71
How Does an Air Bag Restrain?....................1-68
Servicing Your Air Bag-Equipped Vehicle.........1-74
What Makes an Air Bag Inate?....................1-68
What Will You See After an Air
Bag Inates?...........................................1-69
When Should an Air Bag Inate?...................1-67
Where Are the Air Bags?..............................1-65
Air Cleaner/Filter, Engine.................................5-18
Airbag Sensing and Diagnostic Module (SDM).......7-10AM ...............................................................3-59
AM-FM Radio.................................................3-37
Antenna, Fixed Mast.......................................3-59
Anti-lock Brake System..................................... 4-6
Anti-Lock Brake, System Warning Light..............3-23
Appearance Care............................................5-94
Care of Safety Belts....................................5-97
Chemical Paint Spotting..............................5-101
Cleaning the Inside of Your Vehicle................5-95
Cleaning the Outside of Your Vehicle..............5-98
Finish Damage..........................................5-100
Sheet Metal Damage..................................5-100
Underbody Maintenance.............................5-101
Vehicle Care/Appearance Materials...............5-101
Weatherstrips..............................................5-97
Approaching a Hill..........................................4-19
Ashtrays........................................................3-11
Assist Handles...............................................2-45
Audio System(s).............................................3-36
AM-FM Radio.............................................3-37
Care of Your CD Player...............................3-59
Care of Your CDs........................................3-59
Chime Level Adjustment...............................3-59
Fixed Mast Antenna.....................................3-59
Radio with CD............................................3-39
Radio with Six-Disc CD................................3-47
Setting the Time for Radios with Radio Data
Systems (RDS)........................................3-36
1

F
Fan Knob......................................................3-12
Filter
Engine Air Cleaner......................................5-18
Finding a Program Type (PTY) Station.......3-42, 3-51
Finding a Station............................3-37, 3-40, 3-48
Finish Care....................................................5-98
Finish Damage.............................................5-100
Five-Speed....................................................2-25
Fixed Mast Antenna........................................3-59
Flat Tire........................................................5-73
Flat Tire, Changing.........................................5-74
FLUID...........................................................3-34
Fluid
Automatic Transmission................................5-19
Manual Transmission....................................5-22
Power Steering...........................................5-36
Windshield Washer......................................5-37
FM ...............................................................3-59
Fog Lamps...................................................... 3-9
Following Distance..........................................4-66
Four-Wheel Drive....................................2-27, 5-48
Front Armrest Storage Area..............................2-44
Front Axle......................................................5-49
Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-6Fuel (cont.)
Filling a Portable Fuel Container....................5-10
Filling Your Tank........................................... 5-7
Fuels in Foreign Countries.............................. 5-7
Gage.........................................................3-29
Gasoline Octane........................................... 5-5
Gasoline Specications.................................. 5-5
FUEL CAP.....................................................3-34
Fuses
Fuses and Circuit Breakers.........................5-104
Windshield Wiper.......................................5-103
G
Gage
Engine Coolant Temperature.........................3-24
Fuel..........................................................3-29
Speedometer..............................................3-17
Tachometer.................................................3-18
Gasoline
Octane........................................................ 5-5
Specications............................................... 5-5
Getting Familiar with Off-Road Driving................4-16
Glove Box.....................................................2-44
GM Mobility Program for Persons with
Disabilities.................................................... 7-6
GM Oil Life System™......................................3-30
6