2021 CADILLAC XT5 check engine

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14590481) - 2021 - CRC - 10/22/20
SERVICE AND MAINTENANCE 377
Maintenance Schedule
Additional Required Services -
Normal12 000 km/7,500 mi
24 000 km/15,000 mi
36 000 km/22,500 mi
48 000 km/30,000 mi
60 000 km/37,500 mi
72 000 km/45,000 mi
84 000 km/52,500 mi
96 000 km/60,000 mi
108 000 km/67,500 mi
120 000 km/75,000 mi
132 000 km/82,500 mi
144 000 km/90,000 mi
156 000 km/97,500 mi
168 000 km/105,000 mi
180 000 km/112,500 mi
192 000 km/120,000 mi
204 000 km/127,500 mi
216 000 km/135,000 mi
228 000 km/142,500 mi
240 000 km/150,000 mi
Rotate tires and perform Required Services. Check
engine oil level and oil life percentage. Change
engine oil and filter, if needed.
Check engine air filter life percentage and status.
Change engine air filter, if needed.
@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @
Replace passenger compartment air filter. (1)@ @@@@@
Replace spark plugs, if equipped with 2.0L turbo
engine. Inspect spark plug wires and/or boots.@ @
Replace spark plugs, if equipped with 3.6L engine.
Inspect spark plug wires and/or boots.@
Change rear axle fluid, if equipped with AWD. (2)@
Drain and fill engine cooling system. (3)@
Visually inspect accessory drive belts. (4)@
Replace brake fluid. (5)
Replace front and rear wiper blades. (6)
@ @ @ @ @ @ @ @ @ @
Replace hood and/or body lift support gas struts. (7)@ @
Replace air conditioning desiccant. (8)

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14590481) - 2021 - CRC - 10/22/20
SERVICE AND MAINTENANCE 379
Maintenance Schedule
Additional Required Services -
Severe12 000 km/7,500 mi
24 000 km/15,000 mi
36 000 km/22,500 mi
48 000 km/30,000 mi
60 000 km/37,500 mi
72 000 km/45,000 mi
84 000 km/52,500 mi
96 000 km/60,000 mi
108 000 km/67,500 mi
120 000 km/75,000 mi
132 000 km/82,500 mi
144 000 km/90,000 mi
156 000 km/97,500 mi
168 000 km/105,000 mi
180 000 km/112,500 mi
192 000 km/120,000 mi
204 000 km/127,500 mi
216 000 km/135,000 mi
228 000 km/142,500 mi
240 000 km/150,000 mi
Rotate tires and perform Required Services. Check
engine oil level and oil life percentage. Change
engine oil and filter, if needed.
Check engine air filter life percentage and status.
Change engine air filter, if needed.
@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @
Replace passenger compartment air filter. (1)@ @@@@@
Change automatic transmission fluid.@ @@
Replace spark plugs, if equipped with 2.0L turbo
engine. Inspect spark plug wires and/or boots.@ @
Replace spark plugs, if equipped with 3.6L engine.
Inspect spark plug wires and/or boots.@
Change rear axle fluid, if equipped with AWD. (2)@ @
Drain and fill engine cooling system. (3)@
Visually inspect accessory drive belts. (4)@
Replace brake fluid. (5)
Replace front and rear wiper blades. (6)
@ @ @ @ @ @ @ @ @ @
Replace hood and/or body lift support gas struts. (7)@@
Replace air conditioning desiccant. (8)

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14590481) - 2021 - CRC - 10/22/20
SERVICE AND MAINTENANCE 381
Battery
The 12-volt battery supplies power to
start the engine and operate any
additional electrical accessories.
.To avoid break-down or failure to
start the vehicle, maintain a battery
with full cranking power.
.Trained dealer technicians have the
diagnostic equipment to test the
battery and ensure that the
connections and cables are
corrosion-free.
Belts
.Belts may need replacing if they
squeak or show signs of cracking or
splitting.
.Trained dealer technicians have
access to tools and equipment to
inspect the belts and recommend
adjustment or replacement when
necessary. Brakes
Brakes stop the vehicle and are crucial
to safe driving.
.Signs of brake wear may include
chirping, grinding, or squealing
noises, or difficulty stopping.
.Trained dealer technicians have
access to tools and equipment to
inspect the brakes and recommend
quality parts engineered for the
vehicle.
Fluids
Proper fluid levels and approved fluids
protect the vehicle’s systems and
components. See Recommended Fluids
and Lubricants 0383 for GM approved
fluids.
.Engine oil and windshield washer
fluid levels should be checked at
every fuel fill.
.Instrument cluster lights may come
on to indicate that fluids may be
low and need to be filled. Hoses
Hoses transport fluids and should be
regularly inspected to ensure that
there are no cracks or leaks. With a
multi-point inspection, your dealer
can inspect the hoses and advise if
replacement is needed.
Lamps
Properly working headlamps,
taillamps, and brake lamps are
important to see and be seen on
the road.
.Signs that the headlamps need
attention include dimming, failure
to light, cracking, or damage. The
brake lamps need to be checked
periodically to ensure that they light
when braking.
.With a multi-point inspection, your
dealer can check the lamps and
note any concerns.

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14590481) - 2021 - CRC - 10/22/20
TECHNICAL DATA 389
ApplicationCapacities
Metric English
Engine Oil with Filter
I2.0L L4 Engine 5.0 L
5.3 qt
I3.6L V6 Engine 5.7 L
6.0 qt
Fuel Tank IFront-Wheel Drive 73.4 L
19.4 gal
IAll-Wheel Drive 82.1 L
21.7 gal
Wheel Nut Torque 190Y 140 lb ft
All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this manual.
Recheck fluid level after filling.
*Engine cooling system capacity values are based on the entire cooling system and its components.

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14590481) - 2021 - CRC - 10/22/20
CUSTOMER INFORMATION 401
If another party's insurance company
is paying for the repairs, you are not
obligated to accept a repair valuation
based on that insurance company's
collision policy repair limits, as you
have no contractual limits with that
company. In such cases, you can have
control of the repair and parts choices
as long as the cost stays within
reasonable limits.
Publication Ordering
Information
Service Manuals
Service manuals have the diagnosis
and repair information on the engine,
transmission, axle, suspension, brakes,
electrical system, steering system,
body, etc.
Customer Literature
Owner’s manuals are written
specifically for owners and are
intended to provide basic operational
information about the vehicle. The
owner’s manual includes the
Maintenance Schedule for all models.Customer literature publications
available for purchase include owner’s
manuals, warranty manuals, and
portfolios. Portfolios include an
owner’s manual, warranty manual,
if applicable, and zip lock bag or
pouch.
Current and Past Models
Service manuals and customer
literature are available for many
current and past model year GM
vehicles.
To order, call 1-800-551-4123
Monday–Friday, 8:00 a.m.–6:00 p.m.
eastern time
For credit card orders only (VISA,
MasterCard, or Discover), see Helm,
Inc. at: www.helminc.com.
To order by mail, write to:
Helm, Incorporated
Attention: Customer Service
47911 Halyard Drive
Plymouth, MI 48170
Make checks payable in U.S. funds.
Radio Frequency
Statement
This vehicle uses license-exempt
transmitters / receivers / systems that
operate on a radio frequency that
complies with Part 15/Part 18 of the
Federal Communications Commission
(FCC) rules and with Innovation,
Science and Economic Development
(ISED) Canada's license-exempt RSS(s)
/ RSP-100 / ICES-GEN.
Operation is subject to the following
two conditions:
1. The device may not cause harmful interference.
2. The device must accept any interference received, including
interference that may cause
undesired operation of the device.
Changes or modifications to any of
these systems by other than an
authorized service facility could void
authorization to use this equipment.

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14590481) - 2021 - CRC - 10/22/20
406 ONSTAR
.Obtain and customize the Wi-Fi
hotspot name or SSID and
password, if equipped.
Press
Qto connect to an Advisor to:
.Verify account information or
update contact information.
.Get driving directions.
.Receive a Diagnostic check of the
vehicle's key operating systems.
.Receive Roadside Service.
.Manage Wi-Fi Settings, if equipped.
Press
>to get a priority connection
to an OnStar Advisor available 24/7 to:
.Get help for an emergency.
.Be a Good Samaritan or respond to
an AMBER Alert.
.Get assistance in severe weather or
other crisis situations and find
evacuation routes.
OnStar Services
Emergency
Emergency Services require an active
safety and security plan. With
Automatic Crash Response, built-in
sensors can automatically alert a specially trained OnStar Advisor who
is immediately connected in to the
vehicle to help.
Press
>for a priority connection to
an OnStar Advisor who can contact
emergency service providers, direct
them to your exact location, and relay
important information.
With OnStar Crisis Assist, specially
trained Advisors are available
24 hours a day, 7 days a week, to
provide a central point of contact,
assistance, and information during a
crisis.
With Roadside Service, Advisors can
locate a nearby service provider to
help with a flat tire, a battery jump,
or an empty gas tank.
Security
If equipped, OnStar provides these
services:
.With Stolen Vehicle Assistance,
OnStar Advisors can use GPS to
pinpoint the vehicle and help
authorities quickly recover it.
.With Remote Ignition Block,
if equipped, OnStar can block the
engine from being restarted.
.With Stolen Vehicle Slowdown,
if equipped, OnStar can work with
law enforcement to gradually slow
the vehicle down.
Theft Alarm Notification
If equipped, if the doors are locked
and the vehicle alarm sounds, a
notification by text, e-mail, or phone
call will be sent. If the vehicle is
stolen, an OnStar Advisor can work
with authorities to recover the vehicle.
OnStar Additional
Information
In-Vehicle Audio Messages
Audio messages may play important
information at the following times:
.Prior to vehicle purchase. PressQ
to set up an account.
.After change in ownership and at
90 days.

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14590481) - 2021 - CRC - 10/22/20
INDEX 413
IndexA
Accessories and Modifications . . . . . 294
Accessory Power . . . . . . . . . . . . . . . . . . . . 229
Active Fuel Management . . . . . . . . . . . 230
Adaptive Cruise Control . . . . . . . . . . . . 245
Add-On Electrical Equipment . . . . . . 290
Additional InformationOnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 406
Additional Maintenance and Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 380
Adjustments Lumbar, Front Seats . . . . . . . . . . . . . . . 40
Agreements Trademarks and License . . . . . . . . . 191
Air Cleaner/Filter, Engine . . . . . . . . . . 303
Air Conditioning . . . . . . . . . . . . . . .201, 206
Air Filter Life System . . . . . . . . . . . . . . . . . . . . . . . . 302
Air Filter, Passenger
Compartment . . . . . . . . . . . . . . . . . . . . . 208
Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
How Does an Airbag Restrain? . . . . 59
Passenger Sensing System . . . . . . . . 61
What Makes an AirbagInflate? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Airbag System (cont'd)
What Will You See after an
Airbag Inflates? . . . . . . . . . . . . . . . . . . 60
When Should an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Where Are the Airbags? . . . . . . . . . . . 57
Airbags
Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Passenger Status Indicator . . . . . . . 107
Readiness Light . . . . . . . . . . . . . . . . . . . 107
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
System Check . . . . . . . . . . . . . . . . . . . . . . 56
Alarm Vehicle Security . . . . . . . . . . . . . . . . . . . . 25
Alert Lane Change . . . . . . . . . . . . . . . . . . . . . . 272
Rear Pedestrian . . . . . . . . . . . . . . . . . . . 263
Side Blind Zone (SBZA) . . . . . . . . . . 272
All-Season Tires . . . . . . . . . . . . . . . . . . . . . 325
All-Wheel Drive . . . . . . . . . . . . . . . .237, 312
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
AM-FM Radio . . . . . . . . . . . . . . . . . . . . . . . 146
Antenna Multi-band . . . . . . . . . . . . . . . . . . . . . . . . 150
Antilock Brake System (ABS) . . . . . . 238 Warning Light . . . . . . . . . . . . . . . . . . . . 111

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14590481) - 2021 - CRC - 10/22/20
414 INDEX
Appearance CareExterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 364
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 368
Apple CarPlay and Android Auto . . . . . . . . . . . . . . . . . . . . . . 179
Armrest Rear Seat . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Armrest Storage . . . . . . . . . . . . . . . . . . . . . . 87
Assistance Systems for Driving . . . . 264
Assistance Systems for Parking and Backing . . . . . . . . . . . . . . . . . . . . . . . 256
Audio Bluetooth . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Auto Stop Stop/Start System . . . . . . . . . . . . . . . . 226
Automatic
Dimming Mirrors . . . . . . . . . . . . . . . . . . 30
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . 18
Emergency Braking (AEB) . . . . . . . . 266
Headlamp System . . . . . . . . . . . . . . . . 134
Transmission . . . . . . . . . . . . . . . . . . . . . . 232
Transmission Fluid . . . . . . . . . . . . . . . 302
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . . . . . 236
Avoiding Untrusted Media
Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150B
BatteryExterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Power Protection . . . . . . . . . . . . . . . . . . 138
Battery - North America . . . . . .312, 359
Blade Replacement, Wiper . . . . . . . . . 313
Bluetooth Overview . . . . . . . . . . . . . . . . . . . . 174, 175
Bluetooth Audio . . . . . . . . . . . . . . . . . . . . 153
Brake
Electric Boost . . . . . . . . . . . . . . . . . . . . . 237
Parking, Electric . . . . . . . . . . . . . . . . . . 238
System Warning Light . . . . . . . . . . . . 110
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310 Antilock . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Automatic Emergency (AEB) . . . . . 266
Braking System Front Pedestrian (FPB) . . . . . . . . . . . 268
Break-In, New Vehicle . . . . . . . . . . . . . . 224
Bulb Replacement Headlamp Aiming . . . . . . . . . . . . . . . . 315
Headlamps . . . . . . . . . . . . . . . . . . . . . . . . 315
Buying New Tires . . . . . . . . . . . . . . . . . . . 341
C
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . 293
California Proposition 65 Warning . . . . . . . . . . . . .293, 312, 359, Back Cover
Canadian Vehicle Owners . . . . . . . . . . . . . 1
Capacities and Specifications . . . . . . 388
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . . . . . 231
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Winter Driving . . . . . . . . . . . . . . . . . . . . 218
Cargo Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Management System . . . . . . . . . . . . . . 90
Tie-Downs . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Caution, Danger, and Warning . . . . . . . . 2
Center Console Storage . . . . . . . . . . . . . . 88
Chains, Tire . . . . . . . . . . . . . . . . . . . . . . . . . 344
Charging
Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Charging System Light . . . . . . . . . . . . . 108
Check
Engine Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . . . . . 108