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Vehicle Care 223of grease, gasoline, or other
substances that can deteriorate
rubber.
Parking for an extended period can
cause flat spots on the tires that
may result in vibrations while
driving. When storing a vehicle for
at least a month, remove the tires or
raise the vehicle to reduce the
weight from the tires.
Buying New Tires GM has developed and matched
specific tires for the vehicle. The
original equipment tires installed
were designed to meet General
Motors Tire Performance Criteria
Specification (TPC Spec)
system rating. When
replacement tires are needed,
GM strongly recommends
buying tires with the same TPC
Spec rating.
GM's exclusive TPC Spec
system considers over a dozen
critical specifications that impact
the overall performance of the vehicle, including brake system
performance, ride and handling,
traction control, and tire
pressure monitoring
performance. GM's TPC Spec
number is molded onto the tire's
sidewall near the tire size. If the
tires have an all-season tread
design, the TPC Spec number
will be followed by MS for mud
and snow. See Tire Sidewall
Labeling 0 210 .
GM recommends replacing worn
tires in complete sets of four.
Uniform tread depth on all tires
will help to maintain the
performance of the vehicle.
Braking and handling
performance may be adversely
affected if all the tires are not
replaced at the same time.
If proper rotation and
maintenance have been done,
all four tires should wear out at
about the same time. See Tire
Rotation 0 221 . However, if it is necessary to replace only one
axle set of worn tires, place the
new tires on the rear axle.
Winter tires with the same speed
rating as the original equipment
tires may not be available for H,
V, W, Y and ZR speed rated
tires. Never exceed the winter
tires ’ maximum speed capability
when using winter tires with a
lower speed rating.
{ Warning
Tires could explode during
improper service. Attempting
to mount or dismount a tire
could cause injury or death.
Only your dealer or authorized
tire service center should
mount or dismount the tires.
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224 Vehicle Care
{ Warning
Mixing tires of different sizes,
brands, or types may cause
loss of control of the vehicle,
resulting in a crash or other
vehicle damage. Use the
correct size, brand, and type
of tires on all wheels.
{ Warning
Using bias-ply tires on the
vehicle may cause the wheel
rim flanges to develop cracks
after many miles of driving.
A tire and/or wheel could fail
suddenly and cause a crash.
Use only radial-ply tires with
the wheels on the vehicle.
If the vehicle tires must be
replaced with a tire that does not
have a TPC Spec number, make
sure they are the same size, load range, speed rating, and
construction (radial) as the
original tires.
Vehicles that have a tire
pressure monitoring system
could give an inaccurate
low-pressure warning if non-TPC
Spec rated tires are installed.
See Tire Pressure Monitor
System 0 217 .
The Tire and Loading
Information label indicates the
original equipment tires on the
vehicle. See Vehicle Load Limits
0 141 .
Different Size Tires and
Wheels If wheels or tires are installed that
are a different size than the original
equipment wheels and tires, vehicle
performance, including its braking,
ride and handling characteristics,
stability, and resistance to rollover
may be affected. If the vehicle has
electronic systems such as antilock
brakes, rollover airbags, roll bars, traction control, electronic stability
control, or All-Wheel Drive, the
performance of these systems can
also be affected.
{ WarningIf different sized wheels are used,
there may not be an acceptable
level of performance and safety if
tires not recommended for those
wheels are selected. This
increases the chance of a crash
and serious injury. Only use GM
specific wheel and tire systems
developed for the vehicle, and
have them properly installed by a
GM certified technician.
See Buying New Tires 0 223 and
Accessories and Modifications
0 175 .
Uniform Tire Quality
Grading The following information relates
to the system developed by the
United States National Highway
Buick Cascada Owner Manual (GMNA-Localizing-U.S-11373983) - 2018 -
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Vehicle Care 225Traffic 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 tires,
compact 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. 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
All Passenger Car Tires Must
Conform to Federal Safety
Requirements In Addition To
These Grades.
Treadwear
The treadwear grade is a
comparative rating based on the
wear rate of the tire when tested
under controlled conditions on a
specified government test
course. For example, a tire
graded 150 would wear one and
one-half (1½) 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 significantly from the norm due to variations in driving
habits, service practices and
differences in road
characteristics and climate.
Traction
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
specified 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.
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Vehicle Care 227
{ WarningUsing the wrong replacement
wheels, wheel bolts, or wheel
nuts can be dangerous. It could
affect the braking and handling of
the vehicle. Tires can lose air,
and cause loss of control, causing
a crash. Always use the correct
wheel, wheel bolts, and wheel
nuts for replacement.
CautionThe wrong wheel can also cause
problems with bearing life, brake
cooling, speedometer or
odometer calibration, headlamp
aim, bumper height, vehicle
ground clearance, and tire or tire
chain clearance to the body and
chassis. Used Replacement Wheels
{ WarningReplacing a wheel with a used
one is dangerous. How it has
been used or how far it has been
driven may be unknown. It could
fail suddenly and cause a crash.
When replacing wheels, use a
new GM original equipment
wheel.
Tire Chains
{ WarningDo 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 vehicle
parts. The area damaged by the
tire chains could cause loss of
control and a crash.
(Continued) Warning (Continued) Use another type of traction
device only if its manufacturer
recommends it for the vehicle's
tire size combination and road
conditions. Follow that
manufacturer's instructions. To
avoid vehicle damage, drive slow
and readjust or remove the
traction device if it contacts the
vehicle. Do not spin the wheels.
If traction devices are used, install
them on the front tires.
If a Tire Goes Flat It is unusual for a tire to blow out
while driving, especially if the tires
are maintained properly. See Tires
0 208 . If air goes out of a tire, it is
much more likely to leak out slowly.
But if there ever is a blowout, here
are a few tips about what to expect
and what to do:
If a front tire fails, the flat tire
creates a drag that pulls the vehicle
toward that side. Take your foot off
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234 Vehicle Care
5. Insert the strap through the
wheel, as shown.
6. Attach the hook to the right
rear cargo tie-down.
7. Tighten the strap and secure it
using the buckle.
8. Replace the load floor.
The compact spare is for temporary
use only. Replace the compact
spare tire with a full-size tire as
soon as possible. Storing the Compact Spare Tire
and Tools
Reverse the instructions for
removing the spare tire and tools to
store the compact spare tire.
Compact Spare Tire
{ WarningDriving with more than one
compact spare tire at a time could
result in loss of braking and
handling. This could lead to a
crash and you or others could be
injured. Use only one compact
spare tire at a time.
If this vehicle has a compact spare
tire, it was fully inflated when new;
however, it can lose air over time.
Check the inflation pressure
regularly. It should be 420 kPa
(60 psi).
Stop as soon as possible and check
that the spare tire is correctly
inflated after being installed on the
vehicle. The compact spare tire is designed for temporary use only.
The vehicle will perform differently
with the spare tire installed and it is
recommended that the vehicle
speed be limited to 80 km/h
(50 mph). To conserve the tread of
the spare tire, have the standard tire
repaired or replaced as soon as
convenient and return the spare tire
to the storage area.
When using a compact spare tire,
the AWD (if equipped), ABS, and
Traction Control systems may
engage until the spare tire is
recognized by the vehicle,
especially on slippery roads. Adjust
driving to reduce possible
wheel slip.
Caution
When the compact spare is
installed, do not take the vehicle
through an automatic car wash
with guide rails. The compact
spare can get caught on the rails
which can damage the tire, wheel,
and other parts of the vehicle.
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294 Index Compartments
Storage . . . . . . . . . . . . . . . . . . . . . . . . . 90
Compass . . . . . . . . . . . . . . . . . . . . . . . . 96
Connections
OnStar . . . . . . . . . . . . . . . . . . . . . . . 283
Control
Traction and Electronic
Stability . . . . . . . . . . . . . . . . . . . . . 157
Control of a Vehicle . . . . . . . . . . . . . 136
Convertible Top . . . . . . . . . . . . . . . . . . 37
Roll Bars . . . . . . . . . . . . . . . . . . . . . . . 64
Convex Mirrors . . . . . . . . . . . . . . . . . . 33
Coolant
Engine Temperature Gauge . . 100
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . 129
Cooling System . . . . . . . . . . . . . . . . . 183
Courtesy Lamps . . . . . . . . . . . . . . . . 125
Courtesy Transportation
Program . . . . . . . . . . . . . . . . . . . . . . . 272
Cruise Control . . . . . . . . . . . . . . . . . . 159
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Customer Assistance . . . . . . . . . . . 269
Offices . . . . . . . . . . . . . . . . . . . . . . . . 268
Text Telephone (TTY)
Users . . . . . . . . . . . . . . . . . . . . . . . 269
Customer Information
Service Publications
Ordering Information . . . . . . . . 275 Customer Satisfaction
Procedure . . . . . . . . . . . . . . . . . . . . . 266
D Damage Repair, Collision . . . . . . . 273
Danger, Warning, and Caution . . . . 3
Data Collection
Infotainment System . . . . . . . . . . 279
OnStar . . . . . . . . . . . . . . . . . . . . . . . 279
Data Recorders, Event . . . . . . . . . 278
Daytime Running
Lamps (DRL) . . . . . . . . . . . . . . . . . . 121
Defensive Driving . . . . . . . . . . . . . . . 135
Delayed Locking . . . . . . . . . . . . . . . . . 28
Diagnostics
OnStar . . . . . . . . . . . . . . . . . . . . . . . 285
Distracted Driving . . . . . . . . . . . . . . . 135
Dome Lamps . . . . . . . . . . . . . . . . . . . 125
Door
Ajar Light . . . . . . . . . . . . . . . . . . . . . .110
Delayed Locking . . . . . . . . . . . . . . . . 28
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Power Locks . . . . . . . . . . . . . . . . . . . . 28
Drive Belt Routing, Engine . . . . . . 265
Driver Information
Center (DIC) . . . . . . . . . . . . . . . . . . 110
Driving
Defensive . . . . . . . . . . . . . . . . . . . . . 135 Driving (cont'd)
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 136
For Better Fuel Economy . . . . . . . 20
Hill and Mountain Roads . . . . . . 139
If the Vehicle is Stuck . . . . . . . . . 141
Loss of Control . . . . . . . . . . . . . . . 137
Off-Road Recovery . . . . . . . . . . . 137
Vehicle Load Limits . . . . . . . . . . . 141
Wet Roads . . . . . . . . . . . . . . . . . . . 138
Winter . . . . . . . . . . . . . . . . . . . . . . . . 139
Dual Automatic Climate
Control System . . . . . . . . . . . . . . . . 129
E Electric Parking Brake . . . . . . . . . . 155
Electric Parking Brake Light . . . . 105
Electrical Equipment,
Add-On . . . . . . . . . . . . . . . . . . . . . . . 172
Electrical System
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 202
Fuses and Circuit Breakers . . . 202
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 205
Overload . . . . . . . . . . . . . . . . . . . . . 201
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 207
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Index 297Lamps (cont'd)
On Reminder . . . . . . . . . . . . . . . . . 109
Reading . . . . . . . . . . . . . . . . . . . . . . 125
Side Turn Signal . . . . . . . . . . . . . . 198
Sidemarker . . . . . . . . . . . . . . . . . . . 197
Lane Departure
Warning (LDW) . . . . . . . . . . . . . . . . 166
Lane Departure Warning
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Lap-Shoulder Belt . . . . . . . . . . . . . . . 55
LATCH System
Replacing Parts after a
Crash . . . . . . . . . . . . . . . . . . . . . . . . . 84
LATCH, Lower Anchors and
Tethers for Children . . . . . . . . . . . . 77
Latches, Seatback . . . . . . . . . . . . . . . 50
LED Lighting . . . . . . . . . . . . . . . . . . . . 195
Leveling Control
Headlamp . . . . . . . . . . . . . . . . . . . . 123
Lighting
Adaptive Forward . . . . . . . . . . . . . 122
Entry . . . . . . . . . . . . . . . . . . . . . . . . . 125
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Illumination Control . . . . . . . . . . . 124
LED . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Lights
Adaptive Forward Lighting
(AFL) Light . . . . . . . . . . . . . . . . . . 109 Lights (cont'd)
Airbag Readiness . . . . . . . . . . . . . 101
Antilock Brake System
(ABS) Warning . . . . . . . . . . . . . . 105
Brake System Warning . . . . . . . 104
Charging System . . . . . . . . . . . . . 102
Check Engine (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 102
Cruise Control . . . . . . . . . . . . . . . . 109
Door Ajar . . . . . . . . . . . . . . . . . . . . . .110
Electric Parking Brake . . . . . . . . 105
Engine Oil Pressure . . . . . . . . . . 107
Flash-to-Pass . . . . . . . . . . . . . . . . . 121
Front Fog Lamp . . . . . . . . . . . . . . 109
High-Beam On . . . . . . . . . . . . . . . . 109
High/Low Beam Changer . . . . . 121
Lane Departure Warning . . . . . . 106
Low Fuel Warning . . . . . . . . . . . . 108
Operate Pedal . . . . . . . . . . . . . . . . 105
Seat Belt Reminders . . . . . . . . . . 100
Security . . . . . . . . . . . . . . . . . . . . . . 108
Service Electric Parking
Brake . . . . . . . . . . . . . . . . . . . . . . . 105
StabiliTrak OFF . . . . . . . . . . . . . . . 106
Tire Pressure . . . . . . . . . . . . . . . . . 107
Traction Control System
(TCS)/StabiliTrak . . . . . . . . . . . . 107
Warning, Power Steering . . . . . 106 Locks
Automatic Door . . . . . . . . . . . . . . . . . 29
Delayed Locking . . . . . . . . . . . . . . . . 28
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Lockout Protection . . . . . . . . . . . . . . 29
Power Door . . . . . . . . . . . . . . . . . . . . . 28
Loss of Control . . . . . . . . . . . . . . . . . 137
Low Fuel Warning Light . . . . . . . . . 108
Low-Profile Tires . . . . . . . . . . . . . . . . 210
Lower Anchors and Tethers
for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . . . 77
Lumbar Adjustment . . . . . . . . . . . . . . 49
Front Seats . . . . . . . . . . . . . . . . . . . . . 49
M Maintenance
Records . . . . . . . . . . . . . . . . . . . . . . 262
Maintenance and Care
Additional . . . . . . . . . . . . . . . . . . . . . 257
Maintenance Schedule . . . . . . . . . 252
Recommended Fluids and
Lubricants . . . . . . . . . . . . . . . . . . . 260
Malfunction Indicator Lamp . . . . . 102
Manual Mode . . . . . . . . . . . . . . . . . . . 153
Messages
Engine Power . . . . . . . . . . . . . . . . .113
Vehicle . . . . . . . . . . . . . . . . . . . . . . . .113
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Index 301Tires (cont'd)
Terminology and Definitions . . 213
Uniform Tire Quality
Grading . . . . . . . . . . . . . . . . . . . . . 224
Wheel Alignment and Tire
Balance . . . . . . . . . . . . . . . . . . . . . 226
Wheel Replacement . . . . . . . . . . 226
When It Is Time for New
Tires . . . . . . . . . . . . . . . . . . . . . . . . 222
Winter . . . . . . . . . . . . . . . . . . . . . . . . 209
Towing
General Information . . . . . . . . . . 171
Recreational Vehicle . . . . . . . . . . 239
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 238
Traction
Control System (TCS)/
StabiliTrak Light . . . . . . . . . . . . . 107
Traction Control/Electronic
Stability Control . . . . . . . . . . . . . . . 157
Transmission
Automatic . . . . . . . . . . . . . . . . . . . . . 151
Fluid, Automatic . . . . . . . . . . . . . . 182
Transportation Program,
Courtesy . . . . . . . . . . . . . . . . . . . . . . 272
Trip Odometer . . . . . . . . . . . . . . . . . . . 99
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Turn and Lane-Change
Signals . . . . . . . . . . . . . . . . . . . . . . . . 123 U Uniform Tire Quality Grading . . . 224
Using This Manual . . . . . . . . . . . . . . . . 2
V Vehicle
Alarm System . . . . . . . . . . . . . . . . . . 31
Canadian Owners . . . . . . . . . . . . . . . 2
Control . . . . . . . . . . . . . . . . . . . . . . . 136
Identification Number (VIN) . . . 263
Load Limits . . . . . . . . . . . . . . . . . . . 141
Messages . . . . . . . . . . . . . . . . . . . . .113
Personalization . . . . . . . . . . . . . . . .114
Remote Start . . . . . . . . . . . . . . . . . . . 26
Security . . . . . . . . . . . . . . . . . . . . . . . . 31
Speed Messages . . . . . . . . . . . . . .114
Towing . . . . . . . . . . . . . . . . . . . . . . . . 238
Vehicle Ahead Indicator . . . . . . . . 106
Vehicle Care
Tire Pressure . . . . . . . . . . . . . . . . . 216
Vehicle Data Recording and
Privacy . . . . . . . . . . . . . . . . . . . . . . . . 278
Ventilation, Air . . . . . . . . . . . . . . . . . . 132
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
W
Warning
Brake System Light . . . . . . . . . . . 104
Caution and Danger . . . . . . . . . . . . . 3 Warning (cont'd)
Lane Departure (LDW) . . . . . . . 166
Warning Lights, Gauges, and
Indicators . . . . . . . . . . . . . . . . . . . . . . 97
Warnings
Hazard Flashers . . . . . . . . . . . . . . 123
Washer Fluid . . . . . . . . . . . . . . . . . . . 188
Wheels
Alignment and Tire Balance . . 226
Different Size . . . . . . . . . . . . . . . . . 224
Replacement . . . . . . . . . . . . . . . . . 226
When It Is Time for New
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 222
Where to Put the Restraint . . . . . . 76
Wi-Fi . . . . . . . . . . . . . . . . . . . . . . . . . . . 283
Windows . . . . . . . . . . . . . . . . . . . . . . . . 34
Power . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Windshield
Replacement . . . . . . . . . . . . . . . . . 193
Wiper/Washer . . . . . . . . . . . . . . . . . . 94
Winter
Driving . . . . . . . . . . . . . . . . . . . . . . . . 139
Winter Tires . . . . . . . . . . . . . . . . . . . . 209
Wiper Blade Replacement . . . . . . 193