Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-13183937) -
2020 - crc - 4/28/20
VEHICLE CARE 299
2. Remove excess moisture bygently 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
after cleaning and allow them to
dry naturally. Never use heat,
steam, or spot removers. Do not use
cleaners that contain silicone or
wax-based products. Cleaners
containing these solvents can
permanently change the appearance
and feel of leather or soft trim, and
are not recommended.
Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-13183937) -
2020 - crc - 4/28/20
SERVICE AND MAINTENANCE 307
Footnotes—Maintenance Schedule
Additional Required Services -
Normal
(1) Vehicles with different size front
and rear tires do not have tire
rotation. See Tire Rotation0281.
(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) Visually check all fuel and vapor
lines and hoses for proper attachment,
connection, routing, and condition.
(4) 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 0245. (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 System0246.
(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 0253.
(9) Or every 12 months, whichever
comes first. See Wiper Blade
Replacement 0256.
(10) Or every 10 years, whichever
comes first. See Gas Strut(s)0257.
(11) Replace air conditioning
desiccant every seven years.
Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-13183937) -
2020 - crc - 4/28/20
SERVICE AND MAINTENANCE 309
Footnotes—Maintenance Schedule
Additional Required Services -
Severe
(1) Vehicles with different size front
and rear tires do not have tire
rotation. See Tire Rotation0281.
(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) Visually check all fuel and vapor
lines and hoses for proper attachment,
connection, routing, and condition.
(4) 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 0245. (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 System0246.
(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 0253.
(9) Or every 12 months, whichever
comes first. See Wiper Blade
Replacement 0256.
(10) Or every 10 years, whichever
comes first. See Gas Strut(s)0257.
(11) 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 Care
0 293.
Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-13183937) -
2020 - crc - 4/28/20
INDEX 351
Power (cont'd)Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Pregnancy, Using Seat Belts . . . . . . . . . 50
Privacy Vehicle Data Recording . . . . . . . . . . 332
Program Courtesy Transportation . . . . . . . . . 327
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . 222
Proposition 65 Warning,
California . . . . . . . . . . . . . . .234, 254, 288, Back Cover
Publication Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . 330
R
Radio Frequency Statement . . . . . . . . 330
Reading Lamps . . . . . . . . . . . . . . . . . . . . . 130
Rear Pedestrian Alert . . . . . . . . . . . . . . . 209
Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Rear Vision Camera (RVC) . . . . . . . . . 204
Rearview Mirrors . . . . . . . . . . . . . . . . . . . . 28Automatic Dimming . . . . . . . . . . . . . . . . 28
Reclining Seatbacks . . . . . . . . . . . . . . . . . 36
Recommended Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
Recommended Fluids and Lubricants . . . . . . . . . . . . . . . . . . . . . . . . . 313 Records
Maintenance . . . . . . . . . . . . . . . . . . . . . . 316
Recreational Vehicle Towing . . . . . . . 292
Reimbursement Program, GM Mobility . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
Remote Keyless Entry (RKE) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Remote Vehicle Start . . . . . . . . . . . . . . . . 14
Replacement Parts Airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Maintenance . . . . . . . . . . . . . . . . . . . . . . 314
Replacing Airbag System . . . . . . . . . . . . 63
Replacing LATCH System Parts after a Crash . . . . . . . . . . . . . . . . . . . . . . . . 76
Replacing Seat Belt System Parts after a Crash . . . . . . . . . . . . . . . . . 51
Reporting Safety Defects Canadian Government . . . . . . . . . . . . 331
General Motors . . . . . . . . . . . . . . . . . . . 332
U.S. Government . . . . . . . . . . . . . . . . . . 331
Restraints
Where to Put . . . . . . . . . . . . . . . . . . . . . . . . 69
Retained Accessory Power (RAP) . . . . . . . . . . . . . . . . . . . . . . . 163
Reverse Tilt Mirrors . . . . . . . . . . . . . . . . . 27
Ride Control Systems
Enhanced TractionSystem (ETS) . . . . . . . . . . . . . . . . . . . . 191 Roads
Driving, Wet . . . . . . . . . . . . . . . . . . . . . . . 151
Roadside Service . . . . . . . . . . . . . . . . . . . . 325
Roof Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Rotation, Tires . . . . . . . . . . . . . . . . . . . . . . 281
Routing, Engine Drive Belt . . . . . . . . . 320
Run-Flat Tires . . . . . . . . . . . . . . . . . . . . . . . 269
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
S
Safety Defects ReportingCanadian Government . . . . . . . . . . . . 331
General Motors . . . . . . . . . . . . . . . . . . . 332
U.S. Government . . . . . . . . . . . . . . . . . . 331
Safety Locks . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Safety System Check . . . . . . . . . . . . . . . . 50
Scheduling Appointments . . . . . . . . . . 326
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Extender . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
How to Wear Seat Belts
Properly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . 47
Reminders . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Replacing after a Crash . . . . . . . . . . . . . 51
Use During Pregnancy . . . . . . . . . . . . . . 50
Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-13183937) -
2020 - crc - 4/28/20
354 INDEX
Warning (cont'd)Caution and Danger . . . . . . . . . . . . . . . . . 3
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Warnings Hazard Flashers . . . . . . . . . . . . . . . . . . . 128
Washer Fluid . . . . . . . . . . . . . . . . . . . . . . . . 252
Wheels
Alignment and Tire Balance . . . . . 285
Different Size . . . . . . . . . . . . . . . . . . . . . . 284
Replacement . . . . . . . . . . . . . . . . . . . . . . 286
When It Is Time for New Tires . . . . 282
Where to Put the Restraint . . . . . . . . . 69
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Windshield
Replacement . . . . . . . . . . . . . . . . . . . . . . 257
Wiper/Washer . . . . . . . . . . . . . . . . . . . . . . . 86
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Winter Tires . . . . . . . . . . . . . . . . . . . . . . . . . 268
Wiper Blade Replacement . . . . . . . . . . 256
Wireless Charging . . . . . . . . . . . . . . . . . . . 90