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VEHICLE CARE 335
Warning (Continued)
and cause a crash. Use only
radial-ply tires with the wheels
on the vehicle.
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.
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.
The Tire and Loading Information
label indicates the original
equipment tires on the vehicle.
See Vehicle Load Limits 0214.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, traction
control, electronic stability control,
or All-Wheel Drive, the performance
of these systems can also be affected.
{Warning
If 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 0334 and
Accessories and Modifications 0286.
Uniform Tire Quality
Grading
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 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
Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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338 VEHICLE CARE
Tire Chains
{Warning
If the vehicle has 235/60R18 or
245/45R20 size tires, 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
vehicle parts. The area damaged by
the tire chains could cause loss of
control and a crash. 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.
Caution
If the vehicle is equipped with a tire
size other than 235/60R18 or
245/45R20, use tire chains only
where legal and only when
necessary. Use low profile chains
that add no more than 12 mm
thickness to the tire tread and inner
sidewall. Use chains that are the
proper size for the tires. Install
them on the tires of the front axle.
Do not use chains on the tires of
the rear axle. Tighten them as
tightly as possible with the ends
securely fastened. Drive slowly and
follow the chain manufacturer's
instructions. If the chains contact
the vehicle, stop and retighten
them. If the contact continues, slow
down until it stops. Driving too fast
or spinning the wheels with chains
on will damage the vehicle.
If a Tire Goes Flat
It is unusual for a tire to blow out
while driving, especially if the tires are
maintained properly. SeeTires0318. If air goes out of a tire, it is much
more likely to leak out slowly. But if
there is ever 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 the
accelerator pedal and grip the steering
wheel firmly. Steer to maintain lane
position, and then gently brake to a
stop, well off the road, if possible.
A rear blowout, particularly on a
curve, acts much like a skid and may
require the same correction as used in
a skid. Stop pressing the accelerator
pedal and steer to straighten the
vehicle. It may be very bumpy and
noisy. Gently brake to a stop, well off
the road, if possible.
{Warning
Driving on a flat tire will cause
permanent damage to the tire.
Re-inflating a tire after it has been
driven on while severely
underinflated or flat may cause a
(Continued)
Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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350 VEHICLE CARE
16. Tighten the wheel nuts firmly withthe wheel wrench.
When reinstalling the wheel cover or
center cap on the full-size tire, tighten
all five plastic caps hand snug with
the aid of the wheel wrench and
tighten them with the wheel wrench
an additional one-quarter of a turn.
Caution
Wheel covers will not fit on the
vehicle's compact spare. If you try
to put a wheel cover on the
compact spare, the cover or the
spare could be damaged.
Storing a Flat or Spare Tire and
Tools
{Warning
Storing a jack, a tire, or other
equipment in the passenger
compartment of the vehicle could
cause injury. In a sudden stop or
collision, loose equipment could
strike someone. Store all these in
the proper place. To store the flat or spare tire and
tools:
1. Open the liftgate. See Liftgate019.
2. Replace the jack and tools in their original storage location.
3. Lower the load floor.
4. Place the tire, lying flat, in the rear storage compartment.
5. Place the loop end of the strap through the liftgate striker.
6. Route the strap through the wheelas shown.
7. Attach the hook to the loop end of the strap.
8. Tighten the strap. 9. Replace the cargo cover,
if equipped.
10. Close the liftgate and make sure it is fully latched.
The compact spare is for temporary
use only. Replace the compact spare
tire with a full-size tire as soon as
you can.
Compact Spare Tire
{Warning
Driving 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.
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416 INDEX
System (cont'd)Rear Cross Traffic Alert . . . . . . . . . . 260
Roof Rack . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Surround Vision . . . . . . . . . . . . . . . . . . 253
Systems Driver Assistance . . . . . . . . . . . . . . . . . 250
T
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . 103
Teen Driver . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Text Telephone (TTY) Users . . . . . . . 387
Theft-Deterrent Systems . . . . . . . . . . . . 27Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . 27
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 318 All-Season . . . . . . . . . . . . . . . . . . . . . . . . . 319
Buying New Tires . . . . . . . . . . . . . . . . . 334
Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 346
Compact Spare . . . . . . . . . . . . . . . . . . . . 350
Designations . . . . . . . . . . . . . . . . . . . . . . 322
Different Size . . . . . . . . . . . . . . . . . . . . . . 335
If a Tire Goes Flat . . . . . . . . . . . . . . . . 338
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . 331
Pressure . . . . . . . . . . . . . . . . . . . . . 325, 326
Pressure Light . . . . . . . . . . . . . . . . . . . . . 113
Pressure Monitor Operation . . . . . . 328
Pressure Monitor System . . . . . . . . 327 Tires (cont'd)
Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . 332
Sealant and Compressor Kit . . . . . 340
Sealant and Compressor Kit,
Storing . . . . . . . . . . . . . . . . . . . . . . . . . . . 345
Sidewall Labeling . . . . . . . . . . . . . . . . . 320
Terminology and Definitions . . . . 323
Uniform Tire Quality Grading . . . . 335
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . . . . . . 337
Wheel Replacement . . . . . . . . . . . . . . 337
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
Top Tier Fuel . . . . . . . . . . . . . . . . . . . . . . . . 271
Towing Driving Characteristics . . . . . . . . . . . 274
Equipment . . . . . . . . . . . . . . . . . . . . . . . . 281
General Information . . . . . . . . . . . . . . 274
Recreational Vehicle . . . . . . . . . . . . . . 355
Trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
Trailer Sway Control (TSC) . . . . . . . 283
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353
Traction Control System(TCS)/StabiliTrak Light . . . . . . . . . 112
Off Light . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 Traction Control/Electronic
Stability Control . . . . . . . . . . . . . . . . . . . 235
Trademarks and License Agreements . . . . . . . . . . . . . . . . . . . . . . . . 186
Trailer Sway Control (TSC) . . . . . . . . . . . . . . . 283
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
Transmission Automatic . . . . . . . . . . . . . . . . . . . . . . . . . 227
Fluid, Automatic . . . . . . . . . . . . . . . . . . 293
Transportation Program,
Courtesy . . . . . . . . . . . . . . . . . . . . . . . . . . . 390
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . 103
Turn and Lane-Change Signals . . . . 132
U
Umbrella Storage . . . . . . . . . . . . . . . . . . . . 88
Uniform Tire Quality Grading . . . . . . 335
Universal Remote System . . . . . . . . . . 126 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Programming . . . . . . . . . . . . . . . . . . . . . . 126
Updates Map Data . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Software . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
USB Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Using the Navigation System . . . . . . 151
Using the System . . . . . . . . . . . . . . . . . . . 139
Using This Manual . . . . . . . . . . . . . . . . . . . . 2
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INDEX 417
V
VehicleAlarm System . . . . . . . . . . . . . . . . . . . . . . 26
Canadian Owners . . . . . . . . . . . . . . . . . . . . 2
Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Identification Number (VIN) . . . . . 380
Load Limits . . . . . . . . . . . . . . . . . . . . . . . 214
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Personalization . . . . . . . . . . . . . . . . . . . 121
Remote Start . . . . . . . . . . . . . . . . . . . . . . . 14
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Speed Messages . . . . . . . . . . . . . . . . . . . 121
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353
Vehicle Ahead Indicator . . . . . . . . . . . . 111
Vehicle Care Storing the Tire Sealant andCompressor Kit . . . . . . . . . . . . . . . . . . 345
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 325
Vehicle Data Recording and Privacy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 395
Vehicle Positioning . . . . . . . . . . . . . . . . . 162
Ventilation, Air . . . . . . . . . . . . . . . . . . . . . 200
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Voice Recognition . . . . . . . . . . . . . . . . . . 163
W
Warning Brake System Light . . . . . . . . . . . . . . . 108
Caution and Danger . . . . . . . . . . . . . . . . . 2
Warning Lights, Gauges, and
Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Warnings Hazard Flashers . . . . . . . . . . . . . . . . . . . 132
Washer Fluid . . . . . . . . . . . . . . . . . . . . . . . . 299
Wheels Alignment and Tire Balance . . . . . 337
Different Size . . . . . . . . . . . . . . . . . . . . . . 335
Replacement . . . . . . . . . . . . . . . . . . . . . . 337
When It Is Time for New Tires . . . . 333
Where to Put the Restraint . . . . . . . . . 71
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Windshield Replacement . . . . . . . . . . . . . . . . . . . . . . 304
Wiper/Washer . . . . . . . . . . . . . . . . . . . . . . 93
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
Winter Cover . . . . . . . . . . . . . . . . . . . . . . . . 222
Winter Tires . . . . . . . . . . . . . . . . . . . . . . . . . 319
Wiper Blade Replacement . . . . . . . . . . 303
Wipers Rear Washer . . . . . . . . . . . . . . . . . . . . . . . 95
Wireless Charging . . . . . . . . . . . . . . . . . . . 97