2023 CADILLAC XT5 check engine light

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16406251) - 2023 - CRC - 3/25/22
Driving and Operating 243
Caution
Do not drive through
standing water if it is deep
enough to cover the wheel
hubs, axles, or exhaust pipe.
Deep water can damage the
axle and other vehicle parts.
If the standing water is not
too deep, drive slowly through
it. At faster speeds, water
splashes on the ignition
system and the vehicle can
stall. Stalling can also occur if
you get the exhaust pipe
under water. While the
exhaust pipe is under water,
you will not be able to start
the engine. When going
through water, the brakes get
wet, and it might take longer
to stop. See Driving on Wet
Roads 0243.
After Off-Road Driving
Remove any brush or debris
that has collected on the
underbody or chassis, or under the hood. These
accumulations can be a fire
hazard.
After operation in mud or
sand, have the brake linings
cleaned and checked. These
substances can cause glazing
and uneven braking. Check the
body structure, steering,
suspension, wheels, tires, and
exhaust system for damage
and check the fuel lines and
cooling system for any
leakage.
More frequent maintenance
service is required. See
Maintenance Schedule
0429.
Driving on Wet Roads
Rain and wet roads can
reduce vehicle traction and
affect your ability to stop and
accelerate. Always drive
slower in these types of
driving conditions and avoid
driving through large puddles
and deep-standing or flowing
water.
{Warning
Wet brakes can cause
crashes. They might not
work as well in a quick stop
and could cause pulling to
one side. You could lose
control of the vehicle.
After driving through a large
puddle of water or a car/
vehicle wash, lightly apply
the brake pedal until the
brakes work normally.
Flowing or rushing water
creates strong forces.
Driving through flowing
water could cause the
vehicle to be carried away.
If this happens, you and
other vehicle occupants
could drown. Do not ignore
police warnings and be very
cautious about trying to
drive through flowing water.

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16406251) - 2023 - CRC - 3/25/22
256 Driving and Operating
.The driver door has been
opened or the driver seat
belt has been unbuckled.
.The hood has been opened.
.The Auto Stop has reached
the maximum allowed time.
Auto Stop Disable Switch
The automatic engine Stop/
Start feature can be disabled
and enabled by touching the
hsymbol on the center stack.
Auto Stop is enabled each
time you start the vehicle. When the light next to the
h
is illuminated, the system is
enabled.
Engine Heater
The engine heater can provide
easier starting and better fuel
economy during engine
warm-up in cold weather
conditions at or below
−18 °C (0 °F). Vehicles with an
engine heater should be
plugged in at least four hours
before starting. An internal
thermostat in the plug-end of
the cord may exist, which will
prevent engine heater
operation at temperatures
above
−18 °C (0 °F).
{Warning
Do not plug in the engine
block heater while the
vehicle is parked in a garage
or under a carport. Property
damage or personal injury
may result. Always park the
(Continued)
Warning (Continued)
vehicle in a clear open area
away from buildings or
structures.
To Use the Engine Heater
1. Turn off the engine.
2. Check the heater cord fordamage. If it is damaged,
do not use it. See your
dealer for a replacement.
Inspect the cord for
damage yearly.

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16406251) - 2023 - CRC - 3/25/22
272 Driving and Operating
spinning wheels and reduces
engine power to limit
wheel spin.
StabiliTrak/ESC activates
when the system senses a
discrepancy between the
intended path and the
direction the vehicle is actually
traveling. StabiliTrak/ESC
selectively applies braking
pressure at any one of the
vehicle's brakes to help steer
the vehicle in the direction
which you are steering.
If cruise control is being used
and traction control or
StabiliTrak/ESC begins to limit
wheel spin, cruise control will
disengage. Cruise control may
be turned back on when road
conditions allow. TCS and
StabiliTrak/ESC will
automatically turn on when
cruise control is set.
Both systems come on
automatically when the vehicle
is started and begins to move.
The systems may be heard or
felt while they are operatingor while performing diagnostic
checks. This is normal and
does not mean there is a
problem with the vehicle.
It is recommended to leave
both systems on for normal
driving conditions, but it may
be necessary to turn TCS off
if the vehicle gets stuck in
sand, mud, ice, or snow. See If
the Vehicle Is Stuck
0246 and
“Turning the Systems Off and
On” later in this section.
The indicator light for both
systems is in the instrument
cluster. This light will:
.Flash when TCS is limiting
wheel spin
.Flash when StabiliTrak/ESC
is activated
.Turn on and stay on when
either system is not working If either system fails to turn on
or to activate, a message may
display in the Driver
Information Center (DIC), and
dcomes on and stays on to
indicate that the system is
inactive and is not assisting
the driver in maintaining
control. The vehicle is safe to
drive, but driving should be
adjusted accordingly.
If
dcomes on and stays on:
1. Stop the vehicle.
2. Turn the engine off and wait 15 seconds.
3. Start the engine.
Drive the vehicle. If
dcomes
on and stays on, the vehicle
may need more time to
diagnose the problem. If the
condition persists, see your
dealer.

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16406251) - 2023 - CRC - 3/25/22
334 Driving and Operating
trailer wiring package. The
harness contains the following
circuits:Electric
Trailer Brakes Blue
Battery Feed Red/Green or
Red/Blue
Brake Apply
Signal White/Blue
Ground Black or
White
Refer to the aftermarket
electric trailer brake controller
owner's manual to determine
wire color coding of the
electric trailer brake controller.
The wire colors on the brake
controller may be different
from the vehicle. The electric
trailer brake controller should
be installed by your dealer or a
qualified service center.
If equipped, there are four
blunt cut wires inside the front
driver side instrument panel.
It will be necessary to have a technician connect the 12-volt
power to the engine
compartment fuse block.
Trailer Lamps
Always check that all trailer
lamps are working at the
beginning of each trip, and
periodically on longer trips.
Turn Signals When
Towing a Trailer
When properly connected, the
trailer turn signals will
illuminate to indicate the
vehicle is turning, changing
lanes, or stopping. When
towing a trailer, the arrows on
the instrument cluster will
illuminate even if the trailer is
not properly connected or the
bulbs are burned out.
Trailer Sway
Control (TSC)
Vehicles with StabiliTrak/
Electronic Stability Control
(ESC) have a Trailer Sway
Control (TSC) feature. Trailersway is unintended
side-to-side motion of a trailer
while towing. If the vehicle is
towing a trailer and the TSC
detects that sway is
increasing, the vehicle brakes
are selectively applied at each
wheel, to help reduce
excessive trailer sway.
If equipped with the
Integrated Trailer Brake
Control (ITBC) system, and the
trailer has an electric brake
system, StabiliTrak/ESC may
also apply the trailer brakes.
If TSC is enabled, the Traction
Control System (TCS)/
StabiliTrak/ESC warning light
will flash on the instrument
cluster. Reduce vehicle speed
by gradually removing your
foot from the accelerator.
If trailer sway continues,

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16406251) - 2023 - CRC - 3/25/22
336 Driving and Operating
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)0129. 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.
Caution
Some electrical equipment
can damage the vehicle or
cause components to not
work and would not be
covered by the vehicle
warranty. Always check with
your dealer before adding
electrical equipment.
Add-on equipment can drain
the vehicle's 12-volt battery,
even if the vehicle is not
operating.
The vehicle has an airbag
system. Before attempting to
add anything electrical to the
vehicle, see Servicing the
Airbag-Equipped Vehicle 079
and Adding Equipment to the
Airbag-Equipped Vehicle 080.

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16406251) - 2023 - CRC - 3/28/22
Vehicle Care 337
Vehicle Care
General Information
General Information . . . . . . 338
California PerchlorateMaterials
Requirements . . . . . . . . . . . . . 338
Accessories and Modifications . . . . . . . . . . . . . 338
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . 339
Doing Your Own Service Work . . . . . . . . . . . . . 340
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . 340
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . 342
Engine Oil . . . . . . . . . . . . . . . . . . . . 345
Engine Oil Life System . . . 348
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . . 349
Engine Air Filter Life System . . . . . . . . . . . . . . . . . . . . . . 349
Engine Air Cleaner/ Filter . . . . . . . . . . . . . . . . . . . . . . . . . 350
Cooling System . . . . . . . . . . . . 352
Engine Overheating . . . . . . 356
Washer Fluid . . . . . . . . . . . . . . . . 357
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 358 Brake Fluid . . . . . . . . . . . . . . . . . . 359
Battery - North
America . . . . . . . . . . . . . . . . . . . . . 360
All-Wheel Drive . . . . . . . . . . . . . 361
Park Brake and P (Park) Mechanism Check . . . . . . . . 361
Wiper Blade Replacement . . . . . . . . . . . . . . 362
Windshield Replacement . . . . . . . . . . . . . . 363
Gas Strut(s) . . . . . . . . . . . . . . . . . 363Headlamp Aiming
Front Headlamp Aiming . . . . . . . . . . . . . . . . . . . . . . . 365
Bulb Replacement
Bulb Replacement . . . . . . . . . 365
LED Lighting . . . . . . . . . . . . . . . . 365
Electrical System
Electrical SystemOverload . . . . . . . . . . . . . . . . . . . 365
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . . . 367
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . 368
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . 371
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . 374
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 376
All-Season Tires . . . . . . . . . . . . 377
Winter Tires . . . . . . . . . . . . . . . . . 377
Summer Tires . . . . . . . . . . . . . . . 378
Tire Sidewall Labeling . . . . 378
Tire Designations . . . . . . . . . . 381
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . . 382
Tire Pressure . . . . . . . . . . . . . . . 384
Tire Pressure for High-Speed
Operation . . . . . . . . . . . . . . . . . . 386
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . . 387
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . 388
Tire Inspection . . . . . . . . . . . . . 392
Tire Rotation . . . . . . . . . . . . . . . 393
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . 394
Buying New Tires . . . . . . . . . 395
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . 397
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . 397
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . 399
Wheel Replacement . . . . . . 399
Tire Chains . . . . . . . . . . . . . . . . . . 400

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16406251) - 2023 - CRC - 3/28/22
Vehicle Care 357
If No Steam Is Coming
from the Engine
Compartment
If an engine overheat warning
is displayed but no steam can
be seen or heard, the problem
may not be too serious.
Sometimes the engine can get
a little too hot when the
vehicle:
.Climbs a long hill on a
hot day.
.Stops after high-speed
driving.
.Idles for long periods in
traffic.
If the overheat warning is
displayed with no sign of
steam: 1. Turn the air conditioning off.
2. Turn the heater on to the highest temperature and
to the highest fan speed.
Open the windows as
necessary. 3. When it is safe to do so,
pull off the road, shift to
P (Park) or N (Neutral), and
let the engine idle.
If the engine coolant
temperature gauge is no
longer in the overheated area
or the engine coolant
temperature warning light no
longer displays, the vehicle
can be driven. Continue to
drive the vehicle slowly for
about 10 minutes. Keep a safe
distance from the vehicle in
front. If the warning does not
come back on, continue to
drive normally and have the
cooling system checked for
proper fill and function.
If the warning continues, pull
over, stop, and park the
vehicle right away.
If there is no sign of steam,
idle the engine for
three minutes while parked.
If the warning is still displayed,
turn off the engine until it
cools down.
Washer Fluid
What to Use
When windshield washer fluid
is needed, be sure to read the
manufacturer's instructions
before use. If operating the
vehicle in an area where the
temperature may fall below
freezing, use a fluid that has
sufficient protection against
freezing.
Adding Washer Fluid
The appropriate message will
appear in the Driver
Information Center (DIC) when
the fluid level is low.
Open the cap with the washer
symbol on it. Add washer fluid

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16406251) - 2023 - CRC - 3/28/22
Vehicle Care 419
Caution (Continued)
non-uniform finish. Clean low
gloss stripes with soap and
water only.
Air Intakes
Clear debris from the air
intakes, between the hood and
windshield, when washing the
vehicle.
Shutter System
The vehicle may have a
shutter system designed to
help improve fuel economy.
Keep the shutter system clearof debris, snow and ice. If the
check engine light is activated,
please check to see if the
shutter system is clear of
debris, snow or ice.
Windshield and Wiper
Blades
Clean the outside of the
windshield with glass cleaner.
Clean rubber blades using a
lint-free cloth or paper towel
soaked with windshield
washer fluid or a mild
detergent. Wash the
windshield thoroughly when
cleaning the blades. Bugs,
road grime, sap, and a buildup
of vehicle wash/wax
treatments may cause wiper
streaking.
Replace the wiper blades if
they are worn or damaged.
Damage can be caused by
extreme dusty conditions,
sand, salt, heat, sun, snow,
and ice.
Weatherstrips
Apply weatherstrip lubricant
on weatherstrips to make
them last longer, seal better,
and not stick or squeak.
Lubricate weatherstrips at
least once a year. Hot, dry
climates may require more
frequent application. Black
marks from rubber material on
painted surfaces can be
removed by rubbing with a
clean cloth. See
Recommended Fluids and
Lubricants
0433.
Tires
Use a stiff brush with tire
cleaner to clean the tires.
Caution
Using petroleum-based tire
dressing products on the
vehicle may damage the
paint finish and/or tires.
When applying a tire
dressing, always wipe off
(Continued)