octane BUICK RANDEZVOUS 2007 Owner's Manual

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 356. 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.
Emissions Inspection and Maintenance
Programs
Some state/provincial and local governments have
or may begin programs to inspect the emission
control equipment on your vehicle. Failure to pass
this inspection could prevent you from getting a
vehicle registration.
Here are some things you need to know in order
to help your vehicle pass an inspection:
Your vehicle will not pass this inspection if the
SERVICE ENGINE SOON or check engine light is
on or not working properly.
Your vehicle will not pass this inspection if the OBD
(on-board diagnostic) system determines that
critical emission control systems have not been
completely diagnosed by the system. The vehicle
would be considered not ready for inspection.
224

Service........................................................ 354
Accessories and Modications................... 354
California Proposition 65 Warning.............. 355
Doing Your Own Service Work.................. 355
Adding Equipment to the Outside of Your
Vehicle................................................... 356
Fuel............................................................. 356
Gasoline Octane........................................ 356
Gasoline Specications.............................. 356
California Fuel........................................... 357
Additives................................................... 357
Fuels in Foreign Countries........................ 358
Filling the Tank......................................... 359
Filling a Portable Fuel Container............... 361
Checking Things Under the Hood.............. 362
Hood Release........................................... 363
Engine Compartment Overview.................. 364
Engine Oil................................................. 365
Engine Oil Life System.............................. 368
Engine Air Cleaner/Filter............................ 370Automatic Transaxle Fluid......................... 372
Engine Coolant.......................................... 375
Radiator Pressure Cap.............................. 378
Engine Overheating................................... 378
Overheated Engine Protection
Operating Mode..................................... 380
Cooling System......................................... 381
Power Steering Fluid ................................. 387
Windshield Washer Fluid........................... 388
Brakes...................................................... 389
Battery...................................................... 393
Jump Starting............................................ 394
Bulb Replacement....................................... 399
Halogen Bulbs........................................... 399
Headlamps, Front Turn Signal,
Sidemarker, and Parking Lamps............. 399
Taillamps, Turn Signal, and Stoplamps...... 401
Taillamps and Back-Up Lamps.................. 402
Replacement Bulbs................................... 404
Windshield Replacement............................ 404
Section 5 Service and Appearance Care
351

Adding Equipment to the Outside of
Your Vehicle
Things you might add to the outside of your
vehicle can affect the airow around it. This may
cause wind noise and affect windshield washer
performance. Check with your dealer before
adding equipment to the outside of your vehicle.
Fuel
Use of the recommended fuel is an important part
of the proper maintenance of your vehicle. To
help keep your engine clean and maintain optimum
vehicle performance, GM recommends the use
of gasoline advertised as TOP TIER Detergent
Gasoline.
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 357for additional information.
356

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.
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.
358

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 332.
are driven on reasonable road surfaces within
legal driving limits.
use the recommended fuel. SeeGasoline
Octane on page 356.
The services inScheduled Maintenance on
page 475should be performed when indicated.
SeeAdditional Required Services on page 478and
Maintenance Footnotes on page 479for further
information.
{CAUTION:
Performing maintenance work on a
vehicle can be dangerous. In trying to do
some jobs, you can be seriously injured.
Do your own maintenance work only if
you have the required know-how and the
proper tools and equipment for the job. If
you have any doubt, see your GM
Goodwrench
®dealer to have a qualied
technician do the work. SeeDoing Your
Own Service Work on page 355.
Some maintenance services can be complex. So,
unless you are technically qualied and have
the necessary equipment, you should have your
GM Goodwrench
®dealer do these jobs.
When you go to your GM Goodwrench
®dealer for
your service needs, you will know that GM-trained
and supported service technicians will perform
the work using genuine GM parts.
474

F
Filter
Engine Air Cleaner................................... 370
Finish Damage............................................ 459
Fixed Mast Antenna.................................... 299
Flashers, Hazard Warning........................... 176
Flash-to-Pass.............................................. 179
Flat Tire...................................................... 427
Flat Tire, Changing...................................... 428
Flat Tire, Storing......................................... 444
Fluid
Automatic Transaxle................................. 372
Power Steering........................................ 387
Windshield Washer.................................. 388
Fog Lamps.................................................. 187
Front Armrest Storage Area......................... 160
Front Console Storage Area........................ 160
Front Reading Lamps.................................. 191
Fuel............................................................ 356
Additives.................................................. 357
California Fuel.......................................... 357
Filling a Portable Fuel Container.............. 361
Filling Your Tank...................................... 359
Fuels in Foreign Countries....................... 358Fuel (cont.)
Gage....................................................... 225
Gasoline Octane...................................... 356
Gasoline Specications............................ 356
Low Warning Message............................. 232
Fuses
Floor Console Fuse Block........................ 463
Fuses and Circuit Breakers...................... 463
Underhood Fuse Block............................. 466
Windshield Wiper..................................... 462
G
Gage
Engine Coolant Temperature.................... 221
Fuel......................................................... 225
Speedometer........................................... 213
Tachometer.............................................. 214
Garage Door Opener..........................147, 148
Gas, Check Cap Message........................... 231
Gasoline
Octane..................................................... 356
Specications........................................... 356
Glove Box................................................... 158
GM Mobility Reimbursement Program.......... 497
518