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, anti-lock 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 383and
Accessories and Modi cations on page 308for
additional information.
385
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 (NHTSA), 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 (UTQG)
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.
Treadwear
The treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a speci ed
government test course. For example, a tire
graded 150 would wear one and a half (1.5) times
as well on the government course as a tire
graded 100. The relative performance of tires
depends upon the actual conditions of their use,
however, and may depart signi cantly from
the norm due to variations in driving habits, service
practices, and differences in road characteristics
and climate.
Traction – AA, A, B, C
The traction grades, from highest to lowest, are AA,
A, B, and C. Those grades represent the tire’s
ability to stop on wet pavement as measured under
controlled conditions on speci ed government test
surfaces of asphalt and concrete. A tire marked C
may have poor traction performance.
Warning:The traction grade assigned to this tire
is based on straight-ahead braking traction tests,
and does not include acceleration, cornering,
hydroplaning, or peak traction characteristics.
386
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 or other
CAUTION: (Continued)
CAUTION: (Continued)
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,
re-adjust or remove the device if is
contacting your vehicle, and do not
spin your wheels.
If you do nd traction devices that will t,
install them on the front tires.
389
Instrument Panel
Overview.................................................. 164
Instrument Panel (I/P)
Brightness................................................ 178
Cluster..................................................... 193
J
Jump Starting.............................................. 356
K
Keyless Entry System................................. 100
Keys............................................................. 99
L
Labeling, Tire Sidewall................................. 372
Lamps
Battery Run-Down Protection................... 181
Courtesy.................................................. 178
Dome....................................................... 179
Electric Power Management..................... 180
Fog .......................................................... 178Lamps (cont.)
Overhead Console Reading..................... 180
Trunk....................................................... 180
LATCH System
Child Restraints......................................... 60
Latches, Seatback......................................... 16
License Plate Lamps................................... 368
Lift Seat, Power............................................ 20
Light
Airbag Readiness..................................... 196
Anti-Lock Brake System Warning............. 200
Brake System Warning............................. 199
Charging System..................................... 199
Cruise Control.......................................... 208
Enhanced Traction System (ETS)
Active Light.......................................... 202
Enhanced Traction System (ETS)
Warning Light....................................... 202
Highbeam On.......................................... 208
Low Fuel Warning.................................... 208
Malfunction Indicator................................ 204
Oil Pressure............................................. 207
Passenger Airbag Status Indicator............ 197
Passenger Safety Belt Reminder.............. 195
Safety Belt Reminder............................... 195
478
Light (cont.)
Security................................................... 207
StabiliTrak
®Indicator................................ 203
StabiliTrak®Not Ready............................. 203
TCS Warning Light.................................. 201
Traction Control System Active................. 201
Traction Control System (TCS)
Warning................................................ 201
Lighting
Entry/Exit................................................. 179
Parade Dimming...................................... 179
Loading Your Vehicle................................... 288
Lockout Protection....................................... 112
Locks
Automatic Door Lock................................ 110
Delayed Locking...................................... 110
Door........................................................ 108
Lockout Protection................................... 112
Power Door............................................. 109
Programmable Automatic Door Unlock....... 111
Rear Door Security Locks........................ 111
Loss of Control........................................... 271
Low Fuel Warning Light............................... 208
Lowering the Retractable Hardtop................ 154
Lumbar
Manual Controls......................................... 10
M
Maintenance Schedule
Additional Required Services.................... 434
At Each Fuel Fill...................................... 438
At Least Once a Month............................ 438
At Least Once a Year .............................. 439
Introduction.............................................. 428
Maintenance Footnotes............................ 436
Maintenance Record................................ 446
Maintenance Requirements...................... 428
Normal Maintenance
Replacement Parts............................... 443
Owner Checks and Services.................... 438
Recommended Fluids and Lubricants......... 442
Scheduled Maintenance........................... 431
Using....................................................... 429
Your Vehicle and the Environment............ 428
Malfunction Indicator Light........................... 204
Manual Lumbar Controls............................... 10
Manual Seats.................................................. 9
Manual Transaxle
Fluid........................................................ 338
Operation................................................. 134
Message
DIC Warnings and Messages................... 212
479
Traction
Control System Active Light..................... 201
Control System (TCS).............................. 262
Control System Warning Light.................. 201
Enhanced Traction System (ETS)............. 263
Enhanced Traction System (ETS)
Active Light.......................................... 202
Enhanced Traction System (ETS)
Warning Light....................................... 202
StabiliTrak
®System................................. 265
Transaxle
Fluid, Automatic..............................332, 335
Fluid, Manual........................................... 338
Transaxle Operation, Automatic................... 129
Transaxle Operation, Manual....................... 134
Trip Odometer............................................. 194
Trunk.......................................................... 113
Trunk Lamps............................................... 180
Turn and Lane-Change Signals................... 168
Turn Signal/Multifunction Lever.................... 168
U
Understanding Radio Reception................... 249
Uniform Tire Quality Grading....................... 386
V
Vehicle
Control..................................................... 258
Damage Warnings....................................... 5
Loading.................................................... 288
Parking Your............................................ 138
Symbols...................................................... 5
Vehicle Data Collection and Event Data
Recorders................................................ 461
Vehicle Identi cation
Number (VIN).......................................... 414
Service Parts Identi cation Label.............. 414
Vehicle Personalization
DIC .......................................................... 216
Ventilation Adjustment.................................. 191
Visors.......................................................... 117
W
Warning Lights, Gages and Indicators......... 192
Warnings
DIC Warnings and Messages................... 212
Hazard Warning Flashers......................... 166
Other Warning Devices............................ 166
Safety and Symbols..................................... 4
Vehicle Damage.......................................... 5
485