window CADILLAC CT4 2021 Workshop Manual

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
376 VEHICLE CARE
Fabric/Carpet/Suede
Start by vacuuming the surface using
a soft brush attachment. If a rotating
vacuum brush attachment is being
used, only use it on the floor carpet.
Before cleaning, gently remove as
much of the soil as possible:
.Gently blot liquids with a paper
towel. Continue blotting until no
more soil can be removed.
.For solid soils, remove as much as
possible prior to vacuuming.
To clean: 1. Saturate a clean, lint-free colorfast cloth with water. Microfiber cloth is
recommended to prevent lint
transfer to the fabric or carpet.
2. Remove excess moisture by gently wringing until water does not drip
from the cleaning cloth.
3. Start on the outside edge of the soil and gently rub toward the
center. Fold the cleaning cloth to a
clean area frequently to prevent
forcing the soil in to the fabric. 4. Continue gently rubbing the soiled
area until there is no longer any
color transfer from the soil to the
cleaning cloth.
5. If the soil is not completely removed, use a mild soap solution
followed only by plain water.
If the soil is not completely removed,
it may be necessary to use a
commercial upholstery cleaner or spot
lifter. Test a small hidden area for
colorfastness before using a
commercial upholstery cleaner or spot
lifter. If ring formation occurs, clean
the entire fabric or carpet.
After cleaning, use a paper towel to
blot excess moisture.
Cleaning High Gloss Surfaces
and Vehicle Information and
Radio Displays
Use a microfiber cloth on high gloss
surfaces or vehicle displays. First, use
a soft bristle brush to remove dirt that
can scratch the surface. Then gently
clean by rubbing with a microfiber
cloth. Never use window cleaners or
solvents. Periodically hand wash the
microfiber cloth separately, using mild soap. Do not use bleach or fabric
softener. Rinse thoroughly and air dry
before next use.
Caution
Do not attach a device with a
suction cup to the display. This may
cause damage and would not be
covered by the vehicle warranty.
Instrument Panel, Leather, Vinyl,
Other Plastic Surfaces, Low
Gloss Paint Surfaces, and
Natural Open Pore Wood
Surfaces
Use a soft microfiber cloth dampened
with water to remove dust and loose
dirt. For a more thorough cleaning,
use a soft microfiber cloth dampened
with a mild soap solution.
Caution
Soaking or saturating leather,
especially perforated leather, as well
as other interior surfaces, may
cause permanent damage. Wipe
excess moisture from these surfaces
(Continued)

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
SERVICE AND MAINTENANCE 385
Footnotes—Maintenance Schedule
Additional Required Services -
Normal
(1) Vehicles with different size front
and rear tires do not have tire
rotation. See Tire Rotation0352.
(2) 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.
(3) Or every four years, whichever
comes first. If driving in dusty
conditions, inspect the filter at each
oil change or more often as needed.
See Engine Air Cleaner/Filter 0316.
(4) Visually check all fuel and vapor
lines and hoses for proper attachment,
connection, routing, and condition. (5)
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.
(6) Or every five years, whichever
comes first. See Cooling System0317.
(7) Or every 10 years, whichever
comes first. Inspect for fraying,
excessive cracking, or damage; replace,
if needed.
(8) Replace brake fluid every five
years. See Brake Fluid 0325.
(9) Or every 12 months, whichever
comes first. See Wiper Blade
Replacement 0327.
(10) Or every 10 years, whichever
comes first. See Gas Strut(s)0328.
(11) Replace air conditioning
desiccant every seven years.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
388 SERVICE AND MAINTENANCE
Footnotes—Maintenance Schedule
Additional Required Services -
Severe
(1) Vehicles with different size front
and rear tires do not have tire
rotation. See Tire Rotation0352.
(2) 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.
(3) Or every four years, whichever
comes first. If driving in dusty
conditions, inspect the filter at each
oil change or more often as needed.
See Engine Air Cleaner/Filter 0316.
(4) Visually check all fuel and vapor
lines and hoses for proper attachment,
connection, routing, and condition. (5)
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.
(6) Or every five years, whichever
comes first. See Cooling System0317.
(7) Or every 10 years, whichever
comes first. Inspect for fraying,
excessive cracking, or damage; replace,
if needed.
(8) Replace brake fluid every five
years. See Brake Fluid 0325.
(9) Or every 10 years, whichever
comes first. See Gas Strut(s)0328.
(10) 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.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
428 INDEX
N
NavigationConnected Services . . . . . . . . . . . . . . . 418
Destination . . . . . . . . . . . . . . . . . . . . . . . . 155
Using the System . . . . . . . . . . . . . . . . . 150
Navigation Symbols . . . . . . . . . . . . . . . . 154
New Vehicle Break-In . . . . . . . . . . . . . . . 218
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312
Engine Oil Life System . . . . . . . . . . . 314
Pressure Light . . . . . . . . . . . . . . . . . . . . . 104
Older Children, Restraints . . . . . . . . . . . 59
Online Owner Center . . . . . . . . . . . . . . . 402
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 412
OnStar Additional Information . . . . 414
OnStar Emergency . . . . . . . . . . . . . . . . . . 414
OnStar Overview . . . . . . . . . . . . . . . . . . . . 413
OnStar Security . . . . . . . . . . . . . . . . . . . . . 414
OnStar System . . . . . . . . . . . . . . . . .149, 160
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 Overheating, Engine . . . . . . . . . . . . . . . . 322
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Instrument Panel . . . . . . . . . . . . . . . . . . . . 4
P
ParkShifting Into . . . . . . . . . . . . . . . . 223, 224
Shifting Out of . . . . . . . . . . . . . . . . . . . . 225
Park Assist . . . . . . . . . . . . . . . . . . . . . . . . . . 277
Parking Brake and P (Park)Mechanism Check . . . . . . . . . . . . . . . 327
Extended . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Over Things That Burn . . . . . . . . . . . 226
Parking or Backing Assistance Systems . . . . . . . . . . . . . . . 277
Passenger Airbag Status
Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Passenger Compartment Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Passenger Sensing System . . . . . . . . . . 53
Pedestrian Ahead Indicator . . . . . . . . 102
Perchlorate Materials
Requirements, California . . . . . . . . . 306
Performance Shifting Light . . . . . . . . 101
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 Phone
Apple CarPlay and
Android Auto . . . . . . . . . . . . . . . . . . . . 174
Bluetooth . . . . . . . . . . . . . . . . . . . . 169, 170
Port USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Positioning
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Power Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . 17
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Protection, Battery . . . . . . . . . . . . . . . . 133
Retained Accessory (RAP) . . . . . . . . 223
Seat Adjustment . . . . . . . . . . . . . . . . . . . 32
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Pregnancy, Using Seat Belts . . . . . . . . . 46
Privacy Vehicle Data Recording . . . . . . . . . . 410
Problems with Route Guidance . . . . 162
Program Courtesy Transportation . . . . . . . . . 405
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . 294
Proposition 65 Warning,
California . . . . . . . . . . . . . . .305, 326, 366,
Back Cover

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
432 INDEX
V
VehicleAlarm System . . . . . . . . . . . . . . . . . . . . . . 20
Automatic Hold Light . . . . . . . . . . . . 101
Canadian Owners . . . . . . . . . . . . . . . . . . . . 1
Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Identification Number (VIN) . . . . . 395
Load Limits . . . . . . . . . . . . . . . . . . . . . . . 214
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Personalization . . . . . . . . . . . . . . . . . . . 117
Remote Start . . . . . . . . . . . . . . . . . . . . . . . 13
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Speed Messages . . . . . . . . . . . . . . . . . . . 117
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 369
Vehicle Ahead Indicator . . . . . . . . . . . . 102
Vehicle Care Storing the Tire Sealant andCompressor Kit . . . . . . . . . . . . . . . . . . 366
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 346
Vehicle Data Recording and Privacy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 410
Vehicle Hold Automatic . . . . . . . . . . . . . . . . . . . . . . . . . 239
Vehicle Hold (AVH)
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . 239
Vehicle Positioning . . . . . . . . . . . . . . . . . 162
Ventilation, Air . . . . . . . . . . . . . . . . . . . . . 200 Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Voice Recognition . . . . . . . . . . . . . . . . . . 163
W
Warning
Brake System Light . . . . . . . . . . . . . . . . 99
Caution and Danger . . . . . . . . . . . . . . . . . 2
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Warnings Hazard Flashers . . . . . . . . . . . . . . . . . . . 129
Washer Fluid . . . . . . . . . . . . . . . . . . . . . . . . 323
Wheels
Alignment and Tire Balance . . . . . 357
Different Size . . . . . . . . . . . . . . . . . . . . . . 356
Replacement . . . . . . . . . . . . . . . . . . . . . . 357
When It Is Time for New Tires . . . . 353
Where to Put the Restraint . . . . . . . . . 64
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Windshield
Replacement . . . . . . . . . . . . . . . . . . . . . . 328
Wiper/Washer . . . . . . . . . . . . . . . . . . . . . . 82
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Winter Tires . . . . . . . . . . . . . . . . . . . . . . . . . 340
Wiper Blade Replacement . . . . . . . . . . 327
Wireless Charging . . . . . . . . . . . . . . . . . . . 85