2021 CADILLAC XT6 check oil

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/8/21
SERVICE AND MAINTENANCE 385
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)@ @@@@@
Inspect evaporative control system. (2)@ @@
Change automatic transmission fluid.@@@
Replace spark plugs. Inspect spark plug wires and/or
boots. 2.0L Engine.@ @
Replace spark plugs. Inspect spark plug wires and/or
boots. 3.6L Engine.@
Change rear axle fluid, if equipped with AWD. (3)@ @
Drain and fill engine cooling system. (4)@
Visually inspect accessory drive belts. (5)@
Replace brake fluid. (6)
Replace front and rear wiper blades. (7)
@ @ @ @ @ @ @ @ @ @
Replace hood and/or body lift support gas struts. (8)@@
Replace air conditioning desiccant. (9)

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/8/21
386 SERVICE AND MAINTENANCE
Footnotes—Maintenance Schedule
Additional Required Services -
Severe
(1) Or every two years, whichever
comes first. More frequent passenger
compartment air filter replacement
may be needed if driving in areas with
heavy traffic, poor air quality, high
dust levels, or environmental
allergens. Passenger compartment air
filter replacement may also be needed
if there is reduced airf low, window
fogging, or odors. Your GM dealer can
help determine when to replace the
filter.
(2) Visually check all fuel and vapor
lines and hoses for proper attachment,
connection, routing, and condition.
(3) Do not directly power wash the
transfer case and/or front/rear axle
output seals. High pressure water can
overcome the seals and contaminate
the transfer case fluid. Contaminated
fluid will decrease the life of the
transfer case and/or axles and should
be replaced.
(4) Or every five years, whichever
comes first. See Cooling System0316. (5)
Or every 10 years, whichever
comes first. Inspect for fraying,
excessive cracking, or damage; replace,
if needed.
(6) Replace brake fluid every five
years. See Brake Fluid 0322.
(7) Or every 12 months, whichever
comes first. See Wiper Blade
Replacement 0325.
(8) Or every 10 years, whichever
comes first. See Gas Strut(s)0326.
(9) Replace air conditioning desiccant
every seven years.
Special Application
Services
.Severe Commercial Use Vehicles
Only: Lubricate chassis components
every oil change.
.Have underbody flushing service
performed. See "Underbody
Maintenance" in Exterior Care0370.
Additional Maintenance
and Care
Your vehicle is an important
investment and caring for it properly
may help to avoid future costly
repairs. To maintain vehicle
performance, additional maintenance
services may be required.
It is recommended that your dealer
perform these services —their trained
dealer technicians know your vehicle
best. Your dealer can also perform a
thorough assessment with a
multi-point inspection to recommend
when your vehicle may need
attention.
The following list is intended to
explain the services and conditions to
look for that may indicate services are
required.
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.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/8/21
SERVICE AND MAINTENANCE 387
.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 0389 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.
Shocks and Struts
Shocks and struts help aid in control
for a smoother ride.
.Signs of wear may include steering
wheel vibration, bounce/sway while
braking, longer stopping distance,
or uneven tire wear.
.As part of the multi-point
inspection, trained dealer
technicians can visually inspect the
shocks and struts for signs of
leaking, blown seals, or damage, and
can advise when service is needed.
Tires
Tires need to be properly inflated,
rotated, and balanced. Maintaining
the tires can save money and fuel, and
can reduce the risk of tire failure.
.Signs that the tires need to be
replaced include three or more
visible treadwear indicators; cord or
fabric showing through the rubber;

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/8/21
CONNECTED SERVICES 417
MyCadillac Mobile App (If Available)
Download the myCadillac mobile app
to compatible Apple and Android
smartphones. Cadillac users can
access the following services from a
smartphone:
.Remotely start/stop the vehicle,
if factory-equipped.
.Lock/unlock doors, if equipped with
automatic locks.
.Activate the horn and lamps.
.Check the vehicle’s fuel level, oil
life, or tire pressure,
if factory-equipped with the Tire
Pressure Monitor System.
.Send destinations to the vehicle.
.Locate the vehicle on a map (U.S.
market only).
.Turn the vehicle's Wi-Fi hotspot on/
off, manage settings, and monitor
data consumption, if equipped.
.Locate a dealer and schedule
service.
.Request Roadside Service.
.Set a parking reminder with pin
drop, take a photo, make a note,
and set a timer.
.Connect with Cadillac on social
media.
Features are subject to change. For
myCadillac mobile app information
and compatibility, see my.cadillac.com.
An active OnStar or connected service
plan may be required. A compatible
device, factory-installed remote start,
and power locks are required. Data
rates apply. See www.onstar.com for
details and system limitations.
Remote Services
Contact an OnStar Advisor to unlock
the doors or sound the horn and flash
the lamps.
Marketplace
OnStar Advisors can provide offers
from restaurants and retailers on your
route, help locate hotels, or book a
room. These services vary by market.
Diagnostics
By monitoring and reporting on the
vehicle’s key systems, OnStar
Advanced Diagnostics, if equipped,
provides a way to keep up on
maintenance. Capabilities vary by
model. See www.onstar.com for details
and system limitations. Features are
subject to change. For updates on
feature capabilities, see
my.cadillac.com. Message and data
rates may apply.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/9/21
INDEX 421
Door (cont'd)Power Locks . . . . . . . . . . . . . . . . . . . . . . . . 18
Drive Belt Routing, Engine . . . . . . . . . 396
Drive Systems All-Wheel Drive . . . . . . . . . . . . . 245, 324
Driver Teen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Driver Assistance Systems . . . . . . . . . 263
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . . . . . . . 124
Driver Mode Control . . . . . . . . . . . . . . . . 250
Driver Mode Control Light . . . . . . . . . 121
Driving Assistance Systems . . . . . . . . . . . . . . . 272
Better Fuel Economy . . . . . . . . . . . . . 218
Characteristics andTowing Tips . . . . . . . . . . . . . . . . . . . . . 290
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . 219
Hill and Mountain Roads . . . . . . . . 226
If the Vehicle is Stuck . . . . . . . . . . . . 228
Impaired . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
Loss of Control . . . . . . . . . . . . . . . . . . . . 221
Off-Road . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
Off-Road Recovery . . . . . . . . . . . . . . . . 221
Vehicle Load Limits . . . . . . . . . . . . . . 228
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . 225
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226 Dual Automatic Climate
Control System . . . . . . . . . . . . . . . . . . . . 208
E
Electric Brake Boost . . . . . . . . . . . . . . . . 246
Electric Parking Brake . . . . . . . . . . . . . . 246
Electric Parking Brake Light . . . . . . . 117
Electrical Equipment, Add-On . . . . . 301
Electrical System
Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329
Fuses and Circuit Breakers . . . . . . . 328
Instrument Panel Fuse Block . . . . 332
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . 327
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335
Emergency
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 411
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . 315
Check Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . . . . . 115
Compartment Overview . . . . . . . . . . 308
Coolant Temperature Gauge . . . . . 113
Coolant Temperature Warning Light . . . . . . . . . . . . . . . . . . . 121
Cooling System . . . . . . . . . . . . . . . . . . . 316
Drive Belt Routing . . . . . . . . . . . . . . . . 396 Engine (cont'd)
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
Oil Life System . . . . . . . . . . . . . . . . . . . . 313
Oil Pressure Light . . . . . . . . . . . . . . . . . 122
Overheating . . . . . . . . . . . . . . . . . . . . . . . 320
Power Messages . . . . . . . . . . . . . . . . . . 130
Running While Parked . . . . . . . . . . . 239
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Engine Air Filter Life System . . . . . . 314
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . 144
Equipment, Towing . . . . . . . . . . . . . . . . . 297
Event Data Recorders . . . . . . . . . . . . . . 408
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . 145
Extended Parking . . . . . . . . . . . . . . . . . . . 239
Extender, Seat Belt . . . . . . . . . . . . . . . . . . 59
Exterior Lamp Controls . . . . . . . . . . . . 139
Exterior Lamps Off Reminder . . . . . . 141
Exterior Lighting Battery Saver . . . . 145
F
Filter, Engine Air Cleaner . . . . . . . . . . . . . . . . 315
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . 141
Flashers, Hazard Warning . . . . . . . . . . 142
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 357 Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 358
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . 377

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/9/21
INDEX 423
High-Beam On Light . . . . . . . . . . . . . . . . 123
High-Speed Operation . . . . . . . . . . . . . . 345
Hill and Mountain Roads . . . . . . . . . . 226
Hill Start Assist (HSA) . . . . . . . . . . . . . 248
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 306
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
How to Wear Seat Belts Properly . . . 54
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . .208, 213
I
If the System Needs Service . . . . . . . 175
Ignition Positions . . . . . . . . . . . . . . . . . . . 232
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . 29
IndicatorPedestrian Ahead . . . . . . . . . . . . . . . . . 120
Vehicle Ahead . . . . . . . . . . . . . . . . . . . . . 119
Infants and Young Children,
Restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Information Publication Ordering . . . . . . . . . . . . . 406
Infotainment System . . . . . . . . . . . . . . . 409
Instrument Cluster . . . . . . . . . . . . . . . . . 109
Instrument Panel Overview . . . . . . . . . . . 4
Interior Rearview Mirrors . . . . . . . . . . . 32
Introduction . . . . . . . . . . . . . . . . . . . . . . 1, 146
J
Jump Starting - North America . . . . 364
K
Keyless Entry
Remote (RKE) System . . . . . . . . . . . . . . . 7
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
L
Labeling, Tire Sidewall . . . . . . . . . . . . . 339
Lamps Cornering . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Courtesy . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Daytime Running (DRL) . . . . . . . . . . 141
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Exterior Controls . . . . . . . . . . . . . . . . . . 139
Exterior Lamps Off Reminder . . . . 141
Exterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Malfunction Indicator (Check Engine) . . . . . . . . . . . . . . . . . . . . . . . . . . 115
On Reminder . . . . . . . . . . . . . . . . . . . . . . 123
Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Lane Change Alert (LCA) . . . . . . . . . . . 281
Lane Keep Assist (LKA) . . . . . . . . . . . . 282
Lane Keep Assist Light . . . . . . . . . . . . . 119
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . . 56
LATCH System Replacing Parts after a Crash . . . . . 87
LATCH, Lower Anchors and Tethers for Children . . . . . . . . . . . . . . . 79 LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . 327
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Light
Performance Shifting . . . . . . . . . . . . . 119
Lighting Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Illumination Control . . . . . . . . . . . . . . 143
LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327
Lights Airbag Readiness . . . . . . . . . . . . . . . . . 114
All-Wheel Drive . . . . . . . . . . . . . . . . . . . 119
Antilock Brake System (ABS)
Warning . . . . . . . . . . . . . . . . . . . . . . . . . 118
Brake System Warning . . . . . . . . . . . 117
Charging System . . . . . . . . . . . . . . . . . . 115
Check Engine (Malfunction Indicator) . . . . . . . . . . . . . . . . . . . . . . . . 115
Cruise Control . . . . . . . . . . . . . . . . . . . . . 123
Door Ajar . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Driver Mode Control . . . . . . . . . . . . . . 121
Electric Parking Brake . . . . . . . . . . . . 117
Engine Coolant Temperature Warning . . . . . . . . . . . . . . . . . . . . . . . . . 121
Engine Oil Pressure . . . . . . . . . . . . . . . 122
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . 141
High-Beam On . . . . . . . . . . . . . . . . . . . . 123
High/Low Beam Changer . . . . . . . . . 141