2007 CHEVROLET AVALANCHE fuel additives

Service........................................................ 432
Accessories and Modications................... 433
California Proposition 65 Warning.............. 433
Doing Your Own Service Work.................. 434
Adding Equipment to the Outside
of Your Vehicle...................................... 435
Fuel............................................................. 435
Gasoline Octane........................................ 436
Gasoline Specications.............................. 436
California Fuel........................................... 436
Additives................................................... 437
Fuel E85 (85% Ethanol)............................ 438
Fuels in Foreign Countries........................ 439
Filling the Tank......................................... 440
Filling a Portable Fuel Container............... 442
Checking Things Under the Hood.............. 442
Hood Release........................................... 443
Engine Compartment Overview.................. 444
Engine Oil................................................. 446
Engine Oil Life System.............................. 449Engine Air Cleaner/Filter............................ 451
Automatic Transmission Fluid.................... 454
Engine Coolant.......................................... 457
Coolant Surge Tank Pressure Cap............ 460
Engine Overheating................................... 460
Overheated Engine Protection
Operating Mode..................................... 463
Cooling System......................................... 464
Engine Fan Noise..................................... 469
Power Steering Fluid ................................. 469
Windshield Washer Fluid........................... 470
Brakes...................................................... 472
Battery...................................................... 475
Jump Starting............................................ 476
Rear Axle.................................................... 482
Four-Wheel Drive........................................ 483
Front Axle................................................... 484
Headlamp Aiming........................................ 485
Section 5 Service and Appearance Care
429

Gasoline Octane
Use regular unleaded gasoline with a posted
octane rating of 87 or higher. If the octane
rating is less than 87, you may notice an audible
knocking noise when you drive, commonly
referred to as spark knock. If this occurs, use
a gasoline rated at 87 octane or higher as soon
as possible. If you are using gasoline rated at
87 octane or higher and you hear heavy knocking,
your engine needs service.
Gasoline Specications
At a minimum, gasoline should meet
ASTM specication D 4814 in the United States
or CAN/CGSB-3.5 in Canada. Some gasolines
may contain an octane-enhancing additive
called methylcyclopentadienyl manganese
tricarbonyl (MMT). General Motors recommends
against the use of gasolines containing MMT.
SeeAdditives on page 437for additional
information.
California Fuel
If your vehicle is certied to meet California
Emissions Standards, it is designed to operate
on fuels that meet California specications.
See the underhood emission control label.
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 and your vehicle may
fail a smog-check test. SeeMalfunction Indicator
Lamp on page 250. 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.
436

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. In most cases,
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.
To help keep fuel injectors and intake valves clean,
or if your vehicle experiences problems due to
dirty injectors or valves, look for gasoline that is
advertised as TOP TIER Detergent Gasoline.
Also, your dealer has additives that will help
correct and prevent most deposit-related problems.
Gasolines containing oxygenates, such as
ethers and ethanol, and reformulated gasolines
may be available in your area. General Motors
recommends that you use these gasolines if they
comply with the specications described earlier.However, E85 (85% ethanol) and other fuels
containing more than 10% ethanol must not
be used in vehicles that were not designed for
those fuels.
Notice:Your vehicle was not designed for
fuel that contains methanol. Do not use
fuel containing methanol. It can corrode metal
parts in the fuel system and also damage
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 recommends against 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 dealer for service.
437

For good starting and heater efficiency below
32°F (0°C), the fuel mix in the fuel tank should
contain no more than 70% ethanol. It is best not
to alternate repeatedly between gasoline and E85.
If you do switch fuels, it is recommended that
you add as much fuel as possible — do not add
less than three gallons (11 L) when refueling.
You should drive the vehicle immediately
after refueling for at least seven miles (11 km)
to allow the vehicle to adapt to the change
in ethanol concentration.
E85 has less energy per gallon than gasoline, so
you will need to rell your fuel tank more often
when using E85 than when you are using gasoline.
SeeFilling the Tank on page 440.
Notice:Some additives are not compatible
with E85 fuel and may harm your vehicle’s fuel
system. Damage caused by additives would
not be covered by your new vehicle warranty.
Notice:Your vehicle was not designed for
fuel that contains methanol. Do not use
fuel containing methanol. It can corrode metal
parts in the fuel system and also damage
plastic and rubber parts. That damage would
not be covered under your warranty.Fuels in Foreign Countries
If you plan on driving in another country outside
the United States or Canada, the proper fuel
might 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.
439

A
Accessories and Modications..................... 433
Accessory Power Outlet(s).......................... 226
Adding Equipment to Your
Airbag-Equipped Vehicle............................ 87
Additives, Fuel............................................ 437
Add-On Electrical Equipment....................... 547
Adjustable Throttle and Brake Pedal............ 126
Air Cleaner/Filter, Engine............................. 451
Air Conditioning..................................227, 230
Airbag
Passenger Status Indicator....................... 243
Readiness Light....................................... 242
Airbag Sensing and Diagnostic
Module (SDM).......................................... 594
Airbag System............................................... 72
Adding Equipment to Your
Airbag-Equipped Vehicle......................... 87
How Does an Airbag Restrain?.................. 79
Passenger Sensing System....................... 81
Servicing Your Airbag-Equipped Vehicle..... 86
What Makes an Airbag Inate?.................. 79
What Will You See After an
Airbag Inates?...................................... 80
When Should an Airbag Inate?................. 77
Where Are the Airbags?............................. 75Antenna, Fixed Mast................................... 349
Antenna, XM™ Satellite Radio
Antenna System....................................... 349
Anti-Lock Brake System (ABS).................... 357
Anti-Lock Brake, System Warning Light....... 248
Appearance Care
Aluminum or Chrome-Plated Wheels........ 542
Care of Safety Belts................................ 540
Chemical Paint Spotting........................... 544
Cleaning Exterior Lamps/Lenses.............. 541
Cleaning the Inside of Your Vehicle.......... 537
Fabric/Carpet........................................... 538
Finish Care.............................................. 541
Finish Damage......................................... 544
Instrument Panel, Vinyl, and
Other Plastic Surfaces.......................... 540
Leather.................................................... 539
Sheet Metal Damage............................... 544
Tires........................................................ 543
Underbody Maintenance........................... 544
Vehicle Care/Appearance Materials.......... 545
Washing Your Vehicle .............................. 541
Weatherstrips........................................... 540
Windshield and Wiper Blades................... 542
Ashtray(s).................................................... 226
603

F
Filter
Engine Air Cleaner................................... 451
Finish Damage............................................ 544
Fixed Mast Antenna.................................... 349
Flashers, Hazard Warning........................... 206
Flash-to-Pass.............................................. 209
Flat Tire...................................................... 515
Flat Tire, Changing...................................... 516
Flat Tire, Storing......................................... 533
Fluid
Automatic Transmission............................ 454
Power Steering........................................ 469
Windshield Washer.................................. 470
Fog Lamp Light........................................... 255
Fog Lamps.................................................. 218
Four-Wheel Drive...............................132, 483
Front Armrest Storage Area......................... 171
Front Axle................................................... 484
Fuel............................................................ 435
Additives.................................................. 437
California Fuel.......................................... 436
E85 (85% Ethanol)................................... 438
Filling a Portable Fuel Container.............. 442
Filling Your Tank...................................... 440
Fuels in Foreign Countries....................... 439Fuel (cont.)
Gage....................................................... 256
Gasoline Octane...................................... 436
Gasoline Specications............................ 436
Fuses
Center Instrument Panel Fuse Block........ 550
Fuses and Circuit Breakers...................... 548
Instrument Panel Fuse Block................... 548
Underhood Fuse Block............................. 551
Windshield Wiper..................................... 547
G
Gage
Engine Coolant Temperature.................... 249
Fuel......................................................... 256
Oil Pressure............................................. 253
Speedometer........................................... 241
Tachometer.............................................. 241
Voltmeter Gage........................................ 246
Garage Door Opener..........................159, 160
Gasoline
Octane..................................................... 436
Specications........................................... 436
Glove Box................................................... 170
GM Mobility Reimbursement Program.......... 588
608