2007 CHEVROLET UPLANDER octane

If the Light Is On Steady
You may be able to correct the emission system
malfunction by considering the following:
Did you recently put fuel into your vehicle?
If so, reinstall the fuel cap, making sure to fully
install the cap. SeeFilling the Tank on page 433.
The diagnostic system can determine if the
fuel cap has been left off or improperly installed. A
loose or missing fuel cap will allow fuel to
evaporate into the atmosphere. A few driving trips
with the cap properly installed should turn the
light off.
Did you just drive through a deep puddle of
water?
If so, your electrical system may be wet. The
condition will usually be corrected when the
electrical system dries out. A few driving trips
should turn the light off.Have you recently changed brands of fuel?
If so, be sure to fuel your vehicle with quality fuel.
SeeGasoline Octane on page 429. Poor fuel
quality will cause your engine not to run as
efficiently as designed. You may notice this as
stalling after start-up, stalling when you put
the vehicle into gear, misring, hesitation on
acceleration, or stumbling on acceleration. (These
conditions may go away once the engine is
warmed up.) This will be detected by the system
and cause the light to turn on.
If you experience one or more of these conditions,
change the fuel brand you use. It will require at
least one full tank of the proper fuel to turn the
light off.
If none of the above steps have made the light
turn off, your dealer can check the vehicle.
Your dealer has the proper test equipment and
diagnostic tools to x any mechanical or electrical
problems that may have developed.
244

Service........................................................ 426
Accessories and Modications................... 426
California Proposition 65 Warning.............. 427
Doing Your Own Service Work.................. 427
Adding Equipment to the Outside of
Your Vehicle.......................................... 428
Fuel............................................................. 428
Gasoline Octane........................................ 429
Gasoline Specications.............................. 429
California Fuel........................................... 429
Additives................................................... 430
Fuel E85 (85% Ethanol)............................ 431
Fuels in Foreign Countries........................ 432
Filling the Tank......................................... 433
Filling a Portable Fuel Container............... 435
Checking Things Under the Hood.............. 436
Hood Release........................................... 437
Engine Compartment Overview.................. 438
Engine Oil................................................. 439
Engine Oil Life System.............................. 442
Engine Air Cleaner/Filter............................ 444Automatic Transaxle Fluid......................... 445
Engine Coolant.......................................... 448
Radiator Pressure Cap.............................. 451
Engine Overheating................................... 451
Overheated Engine Protection
Operating Mode..................................... 453
Cooling System......................................... 454
Power Steering Fluid ................................. 459
Windshield Washer Fluid........................... 460
Brakes...................................................... 462
Battery...................................................... 465
Jump Starting............................................ 466
Bulb Replacement....................................... 471
Halogen Bulbs........................................... 471
Headlamps and Sidemarker Lamps........... 471
Front Turn Signal, Parking and Daytime
Running Lamps (DRL)........................... 473
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps...................................... 473
License Plate Lamp................................... 475
Replacement Bulbs................................... 475
Section 5 Service and Appearance Care
423

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 430for 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 242. 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.
429

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 GM 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 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 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 authorized GM dealer
for service.
430

Using the Maintenance Schedule
We at General Motors want to help you keep your
vehicle in good working condition. But we do
not know exactly how you will drive it. You may
drive very short distances only a few times a week.
Or you may drive long distances all the time in
very hot, dusty weather. You may use your vehicle
in making deliveries. Or you may drive it to
work, to do errands, or in many other ways.
Because of all the different ways people use their
vehicles, maintenance needs vary. You may
need more frequent checks and replacements. So
please read the following and note how you
drive. If you have any questions on how to keep
your vehicle in good condition, see your GM
Goodwrench
®dealer.This schedule is for vehicles that:
carry passengers and cargo within
recommended limits. You will nd these limits
on the Tire and Loading Information label.
SeeLoading Your Vehicle on page 404.
are driven on reasonable road surfaces within
legal driving limits.
use the recommended fuel. SeeGasoline
Octane on page 429.
The services inScheduled Maintenance on
page 539should be performed when indicated.
SeeAdditional Required Services on page 542and
Maintenance Footnotes on page 543for further
information.
537

Entry Lighting.............................................. 208
Event Data Recorders (EDR)...................... 567
Exit Lighting................................................ 209
Extender, Safety Belt..................................... 55
Exterior Lamps............................................ 204
F
Filter
Engine Air Cleaner................................... 444
Finish Damage............................................ 524
Fixed Mast Antenna.................................... 370
Flashers, Hazard Warning........................... 194
Flash-to-Pass.............................................. 197
Flat Tire...................................................... 499
Flat Tire, Changing...................................... 500
Flat Tire, Storing......................................... 513
Fluid
Automatic Transaxle................................. 445
Power Steering........................................ 459
Windshield Washer.................................. 460Folding Tray................................................ 183
Front Console Storage Area........................ 183
Front Reading Lamps.................................. 209
Front Turn Signal, Parking and
Daytime Running Lamps.......................... 473
Fuel............................................................ 428
Additives.................................................. 430
California Fuel.......................................... 429
E85 (85% Ethanol)................................... 431
Filling a Portable Fuel Container.............. 435
Filling Your Tank...................................... 433
Fuels in Foreign Countries....................... 432
Gage....................................................... 248
Gasoline Octane...................................... 429
Gasoline Specications............................ 429
Low Warning Light................................... 248
Fuses
Fuses and Circuit Breakers...................... 527
Instrument Panel Fuse Block................... 528
Underhood Fuse Block............................. 530
Windshield Wiper..................................... 527
582

G
Gage
Engine Coolant Temperature.................... 241
Fuel......................................................... 248
Speedometer........................................... 232
Tachometer.............................................. 232
Garage Door Opener..........................169, 170
Gasoline
Octane..................................................... 429
Specications........................................... 429
Glove Box................................................... 180
GM Mobility Reimbursement Program.......... 561
H
Hazard Warning Flashers............................ 194
Head Restraints............................................ 13
Headlamp Wiring......................................... 527
Headlamps
Bulb Replacement.................................... 471
Daytime Running Lamps/Automatic
Headlamp System................................ 205Headlamps (cont.)
Flash-to-Pass........................................... 197
Halogen Bulbs......................................... 471
Headlamps and Sidemarker Lamps.......... 471
High/Low Beam Changer......................... 197
On Reminder........................................... 205
Wiper Activated........................................ 205
Headlamps and Sidemarker Lamps............. 471
Heated Seats................................................ 10
Heater................................................217, 220
Highbeam On Light..................................... 247
High-Speed Operation, Tires........................ 486
Highway Hypnosis....................................... 396
Hill and Mountain Roads............................. 397
Hood
Checking Things Under............................ 436
Release................................................... 437
Horn............................................................ 194
How to Use This Manual ................................ 4
How to Wear Safety Belts Properly............... 37
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