2023 CADILLAC XT6 tire pressure

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
Driving and Operating 253
The Tire and Loading
Information label also
shows the size of the
original equipment tires (3)
and the recommended cold
tire inflation pressures (4).
For more information
on tires and inflation see
Tires0400 and
Tire Pressure 0408.
There is also important
loading information on the
vehicle Certification/Tire
label. It may show the
Gross Vehicle Weight
Rating (GVWR) and the
Gross Axle Weight Rating
(GAWR) for the front and
rear axle. See
“Certification/Tire Label”
later in this section.
“Steps for Determining
Correct Load Limit– 1.
Locate the statement
"The combined weight
of occupants and cargo should never exceed
XXX kg or XXX lbs." on
your vehicle’s placard.
2.Determine the combined
weight of the driver and
passengers that will be
riding in your vehicle.
3.Subtract the combined
weight of the driver and
passengers from
XXX kg or XXX lbs.
4.The resulting figure
equals the available
amount of cargo and
luggage load capacity.
For example, if the
"XXX" amount equals
1400 lbs. and there will
be five 150 lb
passengers in your
vehicle, the amount of
available cargo and
luggage load capacity is
650 lbs. (1400-750 (5 x
150) = 650 lbs.)
5.Determine the combined
weight of luggage and
cargo being loaded on
the vehicle. That weight
may not safely exceed
the available cargo and
luggage load capacity
calculated in Step 4.
6.If your vehicle will be
towing a trailer, load
from your trailer will be
transferred to your
vehicle. Consult this
manual to determine
how this reduces the
available cargo and
luggage load capacity of
your vehicle.”
See Trailer Towing 0351
for important information
on towing a trailer, towing
safety rules and
trailering tips.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
Driving and Operating 255
and seating positions. The
combined weight of the
driver, passengers, and
cargo should never exceed
the vehicle's capacity
weight.
Certification/Tire Label
Label Example
A vehicle-specific
Certification/Tire label is
attached to the center
pillar (B-pillar).
The label may show the
size of the vehicle's original
tires and the inflationpressures needed to obtain
the gross weight capacity
of the vehicle. The label
shows the gross weight
capacity of the vehicle. This
is called the Gross Vehicle
Weight Rating (GVWR). The
GVWR includes the weight
of the vehicle, all
occupants, fuel, and cargo.
The Certification/Tire label
may also show the
maximum weights for the
front and rear axles, called
the Gross Axle Weight
Rating (GAWR). To find out
the actual loads on the
front and rear axles, weigh
the vehicle at a weigh
station. Your dealer can
help with this. Be sure to
spread the load equally on
both sides of the
centerline.
Caution
Overloading the vehicle may
cause damage. Repairs
would not be covered by the
vehicle warranty. Do not
overload the vehicle.
{Warning
Things inside the vehicle
can strike and injure
people in a sudden stop
or turn, or in a crash.
.Put things in the cargo
area of the vehicle. In
the cargo area, put
them as far forward as
possible. Try to spread
the weight evenly.
.Never stack heavier
things, like suitcases,
inside the vehicle so
that some of them are
above the tops of the
seats.
(Continued)

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
360 Driving and Operating
Warning (Continued)
improperly or overloaded
trailer, unrestrained cargo,
improper trailer hitch
configuration, or improperly
inflated or incorrect vehicle
or trailer tires. See Towing
Equipment0356 for trailer
ratings and hitch setup
recommendations.
Trailer Tires
Special Trailer (ST) tires differ
from vehicle tires. Trailer tires
are designed with stiff
sidewalls to help prevent sway
and to support heavy loads.
These features can make it
difficult to determine if the
trailer tire pressures are low
only based on a visual
inspection.
Always check all trailer tire
pressures before each trip
when the tires are cool. Low
trailer tire pressure is a
leading cause of trailer tire
blowouts. Trailer tires deteriorate over
time. The trailer tire sidewall
will show the week and year
the tire was manufactured.
Many trailer tire
manufacturers recommend
replacing tires more than six
years old.
Overloading is another leading
cause of trailer tire blowouts.
Never load the trailer with
more weight than the tires are
designed to support. The load
rating is on the trailer tire
sidewall.
Always know the maximum
speed rating for the trailer
tires before driving. This may
be significantly lower than the
vehicle tire speed rating. The
speed rating may be on the
trailer tire sidewall. If the
speed rating is not shown, the
default trailer tire speed rating
is 105 km/h (65 mph).
Conversions and
Add-Ons
Add-On Electrical
Equipment
{Warning
The Data Link Connector
(DLC) is used for vehicle
service and Emission
Inspection/Maintenance
testing. See Malfunction
Indicator Lamp (Check
Engine Light)
0134. A device
connected to the DLC —
such as an aftermarket fleet
or driver-behavior tracking
device —may interfere with
vehicle systems. This could
affect vehicle operation and
cause a crash. Such devices
may also access information
stored in the vehicle’s
systems.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
362 Vehicle Care
Vehicle Care
General Information
General Information . . . . . . 363
California PerchlorateMaterials
Requirements . . . . . . . . . . . . . 363
Accessories and Modifications . . . . . . . . . . . . . 363
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . 364
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . 365
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . 367
Engine Oil . . . . . . . . . . . . . . . . . . . . 370
Engine Oil Life System . . . 373
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 374
Engine Air Filter Life System . . . . . . . . . . . . . . . . . . . . . . 374
Engine Air Cleaner/ Filter . . . . . . . . . . . . . . . . . . . . . . . . . 375
Cooling System . . . . . . . . . . . . 376
Engine Overheating . . . . . . . 381
Washer Fluid . . . . . . . . . . . . . . . . 382
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 383
Brake Fluid . . . . . . . . . . . . . . . . . . 384 Battery - North
America . . . . . . . . . . . . . . . . . . . . . 385
Park Brake and P (Park) Mechanism Check . . . . . . . 386
Wiper Blade
Replacement . . . . . . . . . . . . . . 386
Windshield Replacement . . . . . . . . . . . . . . 388
Gas Strut(s) . . . . . . . . . . . . . . . . . 388
Headlamp Aiming
Front Headlamp Aiming . . . . . . . . . . . . . . . . . . . . . . . 389
Bulb Replacement
LED Lighting . . . . . . . . . . . . . . . . 390
Electrical System
Electrical SystemOverload . . . . . . . . . . . . . . . . . . . 390
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . . . 391
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . 392
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . 396
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . 398
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 400
All-Season Tires . . . . . . . . . . . . 401 Winter Tires . . . . . . . . . . . . . . . . 402
Tire Sidewall Labeling . . . 402
Tire Designations . . . . . . . . . 405
Tire Terminology and
Definitions . . . . . . . . . . . . . . . . . 405
Tire Pressure . . . . . . . . . . . . . . . 408
Tire Pressure for High-Speed
Operation . . . . . . . . . . . . . . . . . . . 410
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . . . 411
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . 412
Tire Inspection . . . . . . . . . . . . . . 416
Tire Rotation . . . . . . . . . . . . . . . . 417
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 418
Buying New Tires . . . . . . . . . . 419
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . 421
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . . 421
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 423
Wheel Replacement . . . . . . 423
Tire Chains . . . . . . . . . . . . . . . . . . 424
If a Tire Goes Flat . . . . . . . . . 425
Tire Changing . . . . . . . . . . . . . . 426
Compact Spare Tire . . . . . . 433

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
Vehicle Care 401
the tire warranty and
where to get service. For
additional information refer
to the tire manufacturer.
{Warning
.Poorly maintained and
improperly used tires
are dangerous.
.Overloading the tires
can cause overheating
as a result of too much
flexing. There could be
a blowout and a serious
crash. See Vehicle Load
Limits0252.
.Underinflated tires
pose the same danger
as overloaded tires. The
resulting crash could
cause serious injury.
Check all tires
frequently to maintain
the recommended
(Continued)
Warning (Continued)
pressure. Tire pressure
should be checked
when the tires are cold.
.Overinflated tires are
more likely to be cut,
punctured, or broken by
a sudden impact —such
as when hitting a
pothole. Keep tires at
the recommended
pressure.
.Worn or old tires can
cause a crash. If the
tread is badly worn,
replace them.
.Replace any tires that
have been damaged by
impacts with potholes,
curbs, etc.
.Improperly repaired
tires can cause a crash.
Only your dealer or an
authorized tire service
(Continued)
Warning (Continued)
center should repair,
replace, dismount, and
mount the tires.
.Do not spin the tires in
excess of 56 km/h
(35 mph) on slippery
surfaces such as snow,
mud, ice, etc. Excessive
spinning may cause the
tires to explode.
See Tire Pressure for
High-Speed Operation
0 410 for inflation pressure
adjustment for high-speed
driving.
All-Season Tires
This vehicle may come with
all-season tires. These tires
are designed to provide good
overall performance on most
road surfaces and weather
conditions. Original equipment
tires designed to GM's specific
tire performance criteria have

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
Vehicle Care 403
service description. See the
“Tire Size”illustration in
this section.
(2) TPC Spec (Tire
Performance Criteria
Specification)
:Original
equipment tires designed
to GM's specific tire
performance criteria have a
TPC specification code
molded onto the sidewall.
GM's TPC specifications
meet or exceed all federal
safety guidelines.
(3) DOT (Department of
Transportation)
:The
Department of
Transportation (DOT) code
indicates that the tire is in
compliance with the U.S.
Department of
Transportation Motor
Vehicle Safety Standards. DOT Tire Date of
Manufacture
:The last
four digits of the TIN
indicate the tire
manufactured date. The
first two digits represent
the week and the last two
digits, the year. For
example, the third week of
the year 2020 would have
a 4-digit DOT date of 0320.
Week 01 is the first full
week (Sunday through
Saturday) of each year.
(4) Tire Identification
Number (TIN)
:The letters
and numbers following the
DOT (Department of
Transportation) code are
the Tire Identification
Number (TIN). The TIN
shows the manufacturer
and plant code, tire size,
and date the tire was
manufactured. The TIN is
molded onto both sides of the tire, although only one
side may have the date of
manufacture.
(5) Tire Ply Material
:The
type of cord and number of
plies in the sidewall and
under the tread.
(6) Uniform Tire Quality
Grading (UTQG)
:Tire
manufacturers are required
to grade tires based on
three performance factors:
tread wear, traction, and
temperature resistance.
For more information see
Uniform Tire Quality
Grading 0421.
(7) Maximum Cold
Inflation Load Limit
:
Maximum load that can be
carried and the maximum
pressure needed to
support that load.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
404 Vehicle Care
Compact Spare Tire Example
(1) Tire Ply Material:The
type of cord and number of
plies in the sidewall and
under the tread.
(2) Temporary Use Only
:
The compact spare tire or
temporary use tire should
not be driven at speeds
over 80 km/h (50 mph). The
compact spare tire is for
emergency use when a
regular road tire has lost
air and gone flat. If the
vehicle has a compact spare tire, see Compact
Spare Tire
0433 and
If a Tire Goes Flat 0425.
(3) Tire Identification
Number (TIN)
:The letters
and numbers following the
DOT (Department of
Transportation) code are
the Tire Identification
Number (TIN). The TIN
shows the manufacturer
and plant code, tire size,
and date the tire was
manufactured. The TIN is
molded onto both sides of
the tire, although only one
side may have the date of
manufacture.
(4) Maximum Cold
Inflation Load Limit
:
Maximum load that can be
carried and the maximum
pressure needed to
support that load. (5) Tire Inflation
:The
temporary use tire or
compact spare tire should
be inflated to 420 kPa
(60 psi). For more
information on tire
pressure and inflation see
Tire Pressure 0408.
(6) Tire Size
:A
combination of letters and
numbers define a tire's
width, height, aspect ratio,
construction type, and
service description. The
letter “T”as the first
character in the tire size
means the tire is for
temporary use only.
(7) TPC Spec (Tire
Performance Criteria
Specification)
:Original
equipment tires designed
to GM's specific tire
performance criteria have a
TPC specification code
molded onto the sidewall.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
Vehicle Care 405
GM's TPC specifications
meet or exceed all federal
safety guidelines.
Tire Designations
Tire Size
The example shows a
typical passenger vehicle
tire size.
Passenger (P-Metric) Tire
(1) Passenger (P-Metric)
Tire
:The United States
version of a metric tire
sizing system. The letter
"P" as the first character in
the tire size means a
passenger vehicle tire
engineered to standards
set by the U.S. Tire and Rim
Association. (2) Tire Width
:The 3-digit
number indicates the tire
section width in millimeters
from sidewall to sidewall.
(3) Aspect Ratio
:A 2-digit
number that indicates the
tire height-to-width
measurements. For
example, if the tire size
aspect ratio is 75, as
shown in item (3) of the
illustration, it would mean
that the tire's sidewall is
75 percent as high as it
is wide.
(4) Construction Code
:A
letter code is used to
indicate the type of ply
construction in the tire. The
letter "R" means radial ply
construction; the letter "D"
means diagonal or bias ply
construction.
(5) Rim Diameter
:
Diameter of the wheel in
inches. (6) Service Description
:
These characters
represent the load index
and speed rating of the
tire. The load index
represents the load
carrying capacity a tire is
certified to carry. The
speed rating is the
maximum speed a tire is
certified to carry a load.
Tire Terminology and
Definitions
Air Pressure:The amount
of air inside the tire
pressing outward on each
square inch of the tire. Air
pressure is expressed
in kPa (kilopascal) or psi
(pounds per square inch).
Aspect Ratio
:The
relationship of a tire's
height to its width.