Page 390 of 478

Different Size Tires and Wheels
If you add wheels or tires that are a different size than
your original equipment wheels and tires, this may
affect the way your vehicle performs, including its
braking, ride and handling characteristics, stability and
resistance to rollover. Additionally, if your vehicle
has electronic systems such as, antilock brakes; traction
control; and electronic stability control, the performance
of these systems can be affected.
{CAUTION:
If you add different sized wheels, your
vehicle may not provide an acceptable level
of performance and safety if tires not
recommended for those wheels are selected.
You may increase the chance that you will
crash and suffer serious injury. Only use
GM speci c wheel and tire systems developed
for your vehicle, and have them properly
installed by a GM certi ed technician.
SeeBuying New Tires on page 5-62andAccessories
and Modi cations on page 5-3for additional information.
Uniform Tire Quality Grading
Quality grades can be found where applicable on the
tire sidewall between tread shoulder and maximum
section width. For example:
Treadwear 200 Traction AA Temperature A
The following information relates to the system
developed by the United States National Highway
Traffic Safety Administration, which grades tires by
treadwear, traction and temperature performance.
(This applies only to vehicles sold in the United States.)
The grades are molded on the sidewalls of most
passenger car tires. The Uniform Tire Quality Grading
system does not apply to deep tread, winter-type
snow tires, space-saver or temporary use spare tires,
tires with nominal rim diameters of 10 to 12 inches
(25 to 30 cm), or to some limited-production tires.
While the tires available on General Motors passenger
cars and light trucks may vary with respect to these
grades, they must also conform to federal safety
requirements and additional General Motors Tire
Performance Criteria (TPC) standards.
5-64
Page 393 of 478

Used Replacement Wheels
{CAUTION:
Putting a used wheel on your vehicle is
dangerous. You cannot know how it has been
used or how far it has been driven. It could fail
suddenly and cause a crash. If you have to
replace a wheel, use a new GM original
equipment wheel.
Tire Chains
{CAUTION:
Do not use tire chains. There is not enough
clearance. Tire chains used on a vehicle
without the proper amount of clearance can
cause damage to the brakes, suspension,
CAUTION: (Continued)
CAUTION: (Continued)
or other vehicle parts. The area damaged by
the tire chains could cause you to lose control
of your vehicle and you or others may be
injured in a crash.
Use another type of traction device only if
its manufacturer recommends it for use on
your vehicle and tire size combination and
road conditions. Follow that manufacturer’s
instructions. To help avoid damage to your
vehicle, drive slowly, readjust or remove the
device if it is contacting your vehicle, and
do not spin the wheels. If you do nd traction
devices that will t, install them on the
front tires for front-wheel-drive vehicles.
If your vehicle has all-wheel drive, install
traction devices on either the front tires or
all four tires, but never on the rear tires only.
5-67
Page 462 of 478

Reporting Safety Defects to the
Canadian Government
If you live in Canada, and you believe that your vehicle
has a safety defect, you should immediately notify
Transport Canada, in addition to notifying General
Motors of Canada Limited. You may call them at
1-800-333-0510 or write to:
Transport Canada
Place de Ville Tower C
330 Sparks Street
Ottawa, Ontario K1A 0N5
Reporting Safety Defects to
General Motors
In addition to notifying NHTSA (or Transport Canada)
in a situation like this, we certainly hope you will notify us.
Please call us at 1-800-521-7300, or write:
Buick Customer Assistance Center
P.O. Box 33136
Detroit, MI 48232-5136
In Canada, please call us at 1-800-263-3777 (English)
or 1-800-263-7854 (French). Or, write:
General Motors of Canada Limited
Customer Communication Centre, 163-005
1908 Colonel Sam Drive
Oshawa, Ontario L1H 8P7
Service Publications Ordering
Information
Service Manuals
Service Manuals have the diagnosis and repair
information on engines, transmission, axle suspension,
brakes, electrical, steering, body, etc.
Transmission, Transaxle, Transfer
Case Unit Repair Manual
This manual provides information on unit repair service
procedures, adjustments, and speci cations for GM
transmissions, transaxles, and transfer cases.
Service Bulletins
Service Bulletins give technical service information
needed to knowledgeably service General Motors cars
and trucks. Each bulletin contains instructions to
assist in the diagnosis and service of your vehicle.
In Canada, information pertaining to Product Service
Bulletins can be obtained by contacting your General
Motors dealer or by calling 1-800-GM-DRIVE
(1-800-463-7483).
7-14
Page 466 of 478

Audio System(s) (cont.)
Navigation/Radio System, see Navigation
Manual.................................................3-114
Radio with Cassette and CD.........................3-87
Radio with CD............................................3-76
Radio with Six-Disc CD..............................3-100
Rear Seat Audio (RSA)...............................3-129
Setting the Time..........................................3-75
Theft-Deterrent Feature...............................3-132
Understanding Radio Reception...................3-133
XM™ Satellite Radio Antenna System...........3-135
Automatic Headlamp System............................3-15
Automatic Transaxle
Fluid..........................................................5-19
Operation...................................................2-23
B
Battery..........................................................5-37
Run-Down Protection...................................3-20
Before Leaving on a Long Trip.........................4-23
Bench Seat, Split............................................. 1-8
Brake
Anti-Lock Brake System (ABS)........................ 4-8
Emergencies...............................................4-10
Low Fluid Warning Message.........................3-58
Parking......................................................2-26
System Warning Light..................................3-44
Brakes..........................................................5-34Braking........................................................... 4-7
Braking in Emergencies...................................4-10
Break-In, New Vehicle.....................................2-19
Bulb Replacement...........................................5-44
Halogen Bulbs............................................5-44
Headlamps, Front Turn Signal, Sidemarker,
and Parking Lamps..................................5-45
Replacement Bulbs......................................5-49
Taillamps and Back-Up Lamps.......................5-48
Taillamps, Turn Signal, and Stoplamps............5-47
Buying New Tires...........................................5-62
C
California Fuel.................................................. 5-5
California Proposition 65 Warning....................... 5-3
Canadian Owners................................................ ii
Capacities and Speci cations..........................5-106
Captain Chairs, Rear.......................................1-14
Carbon Monoxide...................2-11, 2-29, 4-26, 4-38
Care of
Safety Belts................................................5-94
Your Cassette Tape Player..........................3-134
Your CD and DVD Player...........................3-135
Your CDs and DVDs..................................3-135
Cargo Cover..................................................2-43
Cargo Lamp...................................................3-19
Cell Phone Storage Area.................................2-39
Center Rear Passenger Position, Safety Belts.....1-40
2