trailer CADILLAC CT4 2023 Owner's Guide

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
468 Service and Maintenance
Caution (Continued)
on the vehicle. The use of
flushes, solvents, cleaners,
or lubricants that are not
approved by GM could
damage the vehicle,
requiring expensive repairs
that are not covered by the
vehicle warranty.
The Tire Rotation and
Required Services are the
responsibility of the vehicle
owner. It is recommended to
have your dealer perform
these services every
12 000 km/7,500 mi. Proper
vehicle maintenance helps to
keep the vehicle in good
working condition, improves
fuel economy, and reduces
vehicle emissions.
Because of the way people
use vehicles, maintenance
needs vary. There may need to
be more frequent checks and
services. The Additional
Required Services - Normal
are for vehicles that:
.Carry passengers and cargo
within recommended limits
on the Tire and Loading
Information label. See
Vehicle Load Limits 0255.
.Are driven on reasonable
road surfaces within legal
driving limits.
.Use the recommended fuel.
See Recommended Fuel
(LSY 2.0L L4 Turbo Engine)
0354 or
Recommended Fuel (L3B
2.7L L4 Turbo and LF4 3.6L
V6 Twin Turbo Engines)
0 355.
Refer to the information in the
Maintenance Schedule
Additional Required Services -
Normal Service.
The Additional Required
Services - Severe are for
vehicles that are:
.Mainly driven in heavy city
traffic in hot weather.
.Mainly driven in hilly or
mountainous terrain.
.Frequently towing a trailer.
.Used for high speed or
competitive driving.
.Used for taxi, police,
or delivery service.
Refer to the information in the
Maintenance Schedule
Additional Required Services -
Severe Service.
{Warning
Performing maintenance
work can be dangerous and
can cause serious injury.
Perform maintenance work
only if the required
information, proper tools,
and equipment are available.
If they are not, see your
dealer to have a trained
technician do the work. See
Doing Your Own Service
Work 0370.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
Service and Maintenance 471
Severe Conditions
Requiring More Frequent
Maintenance*
.Public service, military,
or commercial use vehicles
to include the following:
‐Ambulances, police cars,
and emergency rescue
vehicles.
‐ Civilian vehicles such as
light duty pick-up trucks,
SUVs, and passenger cars
that are used in military
applications.
‐ Recovery vehicles such as
tow trucks and flatbed
single vehicle carriers or
any vehicle that is
consistently used in towing
trailers or other loads.
‐ High use commercial
vehicles such as courier
delivery vehicles, private
security patrol vehicles,
or any vehicles that
operate on a 24–hour
basis. ‐
Any vehicle consistently
operated in a high sand or
dust environment such as
those used on oil pipelines
and similar applications.
.Vehicles that are regularly
used for short trips of 6 km
(4 mi) or less.
The oil life indicator will show
you when to change the oil
and filter. Under severe
conditions the indicator may
come on before 12 000 km
(7,500 mi).
* Footnote: Under extreme
driving conditions listed
above, it may be necessary
to replace your spark plugs
at more frequent intervals.
For further assistance in
determining the most
suitable service maintenance
intervals for your vehicle,
please contact your
authorized GM Dealer. Extreme service is for
vehicles mainly driven
off-road in four-wheel drive
or used in farming, mining,
forestry, or snow plowing.Additional Required
Services
—Severe Service
Every 72 000 km (45,000 mi)
.Change automatic
transmission fluid and filter.
.Change transfer case fluid,
if equipped with AWD. 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.
.Change rear axle fluid, with
limited slip differential. Do
not directly power wash the
transfer case and/or front/
rear axle output seals. High

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
INDEX 521
Tires (cont'd)Pressure Monitor
Operation . . . . . . . . . . . . . . . . . . 425
Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . . 424
Rotation . . . . . . . . . . . . . . . . . . . . . . 429
Run-Flat . . . . . . . . . . . . . . . . . . . . . . . 415
Sealant and Compressor Kit . . . . . . . . . . . 439
Sealant and Compressor Kit,
Storing . . . . . . . . . . . . . . . . . . . . . . 446
Self-Sealing . . . . . . . . . . . . . . . . . . 415
Sidewall Labeling . . . . . . . . . . . 417
Terminology and Definitions . . . . . . . . . . . . . . . . . . 419
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . 434
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . 435
Wheel Replacement . . . . . . 436
When It Is Time for
New Tires . . . . . . . . . . . . . . . . . . . 431
Winter . . . . . . . . . . . . . . . . . . . . . . . . . 414
Top Tier Fuel . . . . . . . . . . . . . . . . . 354
Towing DrivingCharacteristics . . . . . . . . . . . 358 Towing (cont'd)
Equipment . . . . . . . . . . . . . . . . . . . 365
General Information . . . . . . 358
Recreational Vehicle . . . . . 454
Trailer . . . . . . . . . . . . . . . . . . . . . . . . . 363
Track Events and Competitive Driving . . . . . . . 238
Traction Control System(TCS)/StabiliTrak
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Control/Electronic
Stability Control . . . . . . . . . . 290
Limited-Slip Differential . . . . . . . . . . . . . . . . . . 301
Off Light . . . . . . . . . . . . . . . . . . . . . . 123
Trademarks and License Agreements . . . . . . . 215
Trailer Towing . . . . . . . . . . . . . . . . . . . . . . . . 363
Transmission
Automatic . . . . . . . . . . . . . . 272, 275
Fluid, Automatic . . . . . . . . . . . . 382
Fluid, Manual . . . . . . . . . . . . . . . . 382
Manual . . . . . . . . . . . . . . . . . . . . . . . . 283
Transportation
Program, Courtesy . . . . . . . . 490 Transporting
a Disabled
Vehicle . . . . . . . . . . . . . . . 450, 452
Trip Odometer . . . . . . . . . . . . . . . . .112
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
TTY Users Customer Assistance . . . . 486
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . . . . 149
U
Umbrella Storage . . . . . . . . . . . . . . 95
Uniform Tire QualityGrading . . . . . . . . . . . . . . . . . . . . . . . 434
Universal Remote System . . . . . . . . . . . . . . . . . . . . . . . . . .141
Operation . . . . . . . . . . . . . . . . . . . . . 144
Programming . . . . . . . . . . . . . . . . 141
Updates Map Data . . . . . . . . . . . . . . . . . . . . . 184
Software . . . . . . . . . . . . . . . . . . . . . . 162
USB Port . . . . . . . . . . . . . . . . . . . . . . . . 166
Using Infotainment System . . . . . . 158
Navigation System . . . . . . . . . 170
This Manual . . . . . . . . . . . . . . . . . . . . . 2