check oil CADILLAC CT5 2021 Owner's Manual

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/24/20
86 INSTRUMENTS AND CONTROLS
Instruments and
Controls
Controls
Steering Wheel Adjustment . . . . . . . 87
Steering Wheel Controls . . . . . . . . . . 87
Heated Steering Wheel . . . . . . . . . . . . 87
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Windshield Wiper/Washer . . . . . . . . 88
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Power Outlets . . . . . . . . . . . . . . . . . . . . . . 90
Wireless Charging . . . . . . . . . . . . . . . . . 91
Warning Lights, Gauges, and
Indicators
Warning Lights, Gauges, andIndicators . . . . . . . . . . . . . . . . . . . . . . . . . 93
Instrument Cluster (Base Level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Instrument Cluster (Uplevel) . . . . . 96
Speedometer . . . . . . . . . . . . . . . . . . . . . . . 99
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Trip Odometer . . . . . . . . . . . . . . . . . . . . . 99
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . 99
Fuel Gauge . . . . . . . . . . . . . . . . . . . . . . . . 100
Engine Coolant Temperature
Gauge (Base Level) . . . . . . . . . . . . . 100 Engine Coolant Temperature
Gauge (Uplevel) . . . . . . . . . . . . . . . . . 101
Seat Belt Reminders . . . . . . . . . . . . . . 101
Airbag Readiness Light . . . . . . . . . . 102
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . . . . . 102
Charging System Light . . . . . . . . . . . 103
Malfunction Indicator Lamp (Check Engine Light) . . . . . . . . . . . 103
Brake System Warning Light . . . . 105
Electric Parking Brake Light . . . . . 106
Service Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . . . . 106
Performance Shifting Light . . . . . . 107
Automatic Vehicle Hold (AVH) Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Lane Keep Assist (LKA) Light . . . 107
Automatic Emergency Braking (AEB) Disabled Light . . . . . . . . . . . 107
Vehicle Ahead Indicator . . . . . . . . . 108
Pedestrian Ahead Indicator . . . . . . 108
Traction Off Light . . . . . . . . . . . . . . . . 108
StabiliTrak OFF Light . . . . . . . . . . . . 108
Traction Control System (TCS)/ StabiliTrak Light . . . . . . . . . . . . . . . . 109
Engine Coolant Temperature Warning Light . . . . . . . . . . . . . . . . . . 109
Driver Mode Control Light . . . . . . . 109 Tire Pressure Light . . . . . . . . . . . . . . . 110
Engine Oil Pressure Light . . . . . . . . 110
Low Fuel Warning Light . . . . . . . . . 111
Security Light . . . . . . . . . . . . . . . . . . . . . 111
High-Beam On Light . . . . . . . . . . . . . 111
Lamps On Reminder . . . . . . . . . . . . . 112
Cruise Control Light (Base
Level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Cruise Control Light (Uplevel) . . . 112
Door Ajar Light . . . . . . . . . . . . . . . . . . . 113
Information Displays
Driver Information Center (DIC) (Base Level) . . . . . . . . . . . . . . . . . . . . . 113
Driver Information Center (DIC) (Uplevel) . . . . . . . . . . . . . . . . . . . . . . . . . 116
Head-Up Display (HUD) . . . . . . . . . 118
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . . . . . . 122
Engine Power Messages . . . . . . . . . . 123
Vehicle Speed Messages . . . . . . . . . 123
Vehicle Personalization
Vehicle Personalization . . . . . . . . . . 123
Universal Remote System
Universal Remote System . . . . . . . . 128
Universal Remote System
Programming . . . . . . . . . . . . . . . . . . . 129
Universal Remote System Operation . . . . . . . . . . . . . . . . . . . . . . . . 131

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/24/20
110 INSTRUMENTS AND CONTROLS
This light comes on when Snow/Ice
Mode is selected.
This light comes on when Track Mode
is selected. SeeDriver Mode Control
0 242.
This light comes on when V Mode is
selected. See Driver Mode Control
0 242.
This light comes on when My Mode is
selected. See Driver Mode Control
0 242.
Tire Pressure Light
For vehicles with the Tire Pressure
Monitor System (TPMS), this light
comes on briefly when the engine is
started. It provides information about
tire pressures and the TPMS.
When the Light Is On Steady
This indicates that one or more of the
tires are significantly underinflated.
A Driver Information Center (DIC) tire
pressure message may also display.
Stop as soon as possible, and inflate the tires to the pressure value shown
on the Tire and Loading Information
label. See
Tire Pressure 0349.
When the Light Flashes First and
Then Is On Steady
If the light flashes for about a minute
and then stays on, there may be a
problem with the TPMS. If the
problem is not corrected, the light will
come on at every ignition cycle. See
Tire Pressure Monitor Operation 0352.
Engine Oil Pressure Light
Caution
Lack of proper engine oil
maintenance can damage the
engine. Driving with the engine oil
low can also damage the engine.
The repairs would not be covered
by the vehicle warranty. Check the
oil level as soon as possible. Add oil
if required, but if the oil level is
within the operating range and the
oil pressure is still low, have the
vehicle serviced. Always follow the
maintenance schedule for changing
engine oil.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/24/20
INSTRUMENTS AND CONTROLS 111
This light should come on briefly as
the engine is started. If it does not
come on, have the vehicle serviced by
your dealer.
If the light comes on and stays on, it
means that oil is not flowing through
the engine properly. The vehicle could
be low on oil and might have some
other system problem. See your dealer.
Low Fuel Warning Light
A Low Fuel Warning Light near the
fuel gauge comes on briefly when the
ignition is turned on as a check to
show it is working.It also comes on when the fuel gauge
indicator nears empty. The light turns
off when fuel is added. If it does not,
have the vehicle serviced.
Security Light
The security light should come on
briefly as the engine is started. If it
does not come on, have the vehicle
serviced by your dealer. If the system
is working normally, the indicator
light turns off.
If the light stays on and the engine
does not start, there could be a
problem with the theft-deterrent
system. See
Immobilizer Operation
0 25.
High-Beam On Light
This light comes on when the
high-beam headlamps are in use. See
Headlamp High/Low-Beam Changer
0134.
IntelliBeam Light
This light comes on when the
IntelliBeam system, if equipped, is
enabled. See Exterior Lamp Controls
0 132.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
DRIVING AND OPERATING 213
.Slow down and adjust your driving
according to weather conditions.
Stopping distance can be longer and
vehicle control can be affected when
traction is reduced by water, snow,
ice, gravel, or other material on the
road. Learn to recognize warning
clues—such as enough water, ice,
or packed snow on the road to
make a mirrored surface —and
slow down when you have any
doubt.
.Try to avoid sudden steering,
acceleration, or braking, including
reducing vehicle speed by shifting
to a lower gear. Any sudden changes
could cause the tires to slide.
Remember: Antilock brakes help avoid
only the braking skid.
Track Events and
Competitive Driving
(V-Series Only)
{Danger
High-performance features are
intended for use only on closed
tracks by experienced and qualified
drivers and should not be used on
public roads. High-speed driving,
aggressive cornering, hard braking,
and other high-performance driving
can be dangerous. Improper driver
inputs for the conditions may result
in loss of control of the vehicle,
which could injure or kill you or
others. Always drive safely.
Track events and competitive driving
may affect the vehicle warranty. See
the warranty manual before using the
vehicle for competitive driving.
{Warning
Prior to each track event and again
before returning to public roads,
tighten the wheel nuts with a
torque wrench to the proper torque
specification. Wheel nuts that are
improperly or incorrectly tightened
can cause the wheels to become
loose or come off, resulting in a
crash. See Capacities and
Specifications 0397 for wheel nut
torque specifications.
Caution
If the vehicle is used for track
events and competitive driving, the
engine may use more oil than it
would with normal use. Low oil
levels can damage the engine.
Check the oil level often and
maintain the proper level. See
Engine Oil 0316.
Axle Fluid
Axles must have 2400 km (1500 mi)
before being used in track driving.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
214 DRIVING AND OPERATING
The front, if equipped with AWD, and
rear axle fluid temperatures may be
higher than when driving in severe
conditions. Drain and refill with new
fluid after the first racing or
competitive driving event, and then
after every 24 hours of racing or
competitive driving. SeeRecommended
Fluids and Lubricants 0392.
Caution
During a first time track or racing
event, high axle temperatures can
occur. Damage could be caused to
the axle and would not be covered
by the vehicle warranty. Do not
drive as long or as fast the first
time the vehicle is driven on the
track or raced.
Engine Oil
Check the oil level often during track
events and competitive driving and
keep the oil level at or near the
upper mark.
Fuel
Use premium unleaded gasoline with
a posted octane rating of 93 at a track
event. Unleaded gasoline with a
posted octane rating of 91 may be
used, but performance will be
degraded. See Prohibited Fuels 0298.
Automatic Transmission Fluid
Have the transmission fluid set to the
track specific oil level prior to track
usage. Transmission fluid should be
changed after every 15 hours of track
usage. Any transmission level set or
change should be performed at your
dealer.
Brakes
Brake cooling can be improved if the
front brake disc splash shield and
front tire deflector are removed.
Removing the shield will require that
the suspension bushings and wheel
speed sensor wires visible to the brake
disc be protected with insulated
thermal wrapping.
Caution
Removing the splash shield can
degrade wet braking performance,
as well as introduce brake pedal
pulsation, due to brake disc
exposure to road debris. Only
remove the front brake disc splash
shield and front tire deflector when
driving in track events.
Brake Pad Wear Sensors
(V-Series Only)
If equipped, the brake pad wear
sensors need to be removed from the
brake calipers prior to any track or
racing event. The original sensors can
be reinstalled if significant brake pad
wear is not observed. The sensor
should not extend beyond the brake
pad surface at the rotor contact.
If this condition is observed, the brake
pad life system needs to be disabled
until a new set of brake pads and
sensors are installed and the system
reset.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
DRIVING AND OPERATING 215
Brake Fluid
For track events and competitive
driving, it is recommended that the
brake fluid be replaced with a high
performance brake fluid that has a dry
boiling point greater than 279 °C
(534 °F). After conversion to the high
performance brake fluid, follow the
brake fluid service recommendations
outlined by the fluid manufacturer. Do
not use silicone or DOT-5 brake fluids.
Check the fluid level before each
competitive driving event.
Brake Fade Warning Assist
The Brake Fade Warning Assist
system monitors the performance of
the brake system. If the system
detects brake fade, or if the brake
fluid is near the boiling point, the
driver will be alerted.
Stage 1 :The Driver Information
Center (DIC) displays a “Reduce
Braking to Avoid Overheating”
message and brake pedal effort and
travel is increased. When the message
displays, the driver should decrease
brake pedal pressure. Stage 2 :
The Driver Information
Center (DIC) displays a “Brakes
Overheated Service Now ”message that
the brake fluid temperature is
excessive and is about to boil. The
system increases brake pedal effort
and travel, and will also limit vehicle
speed. The driver should immediately
start a cool down lap if on the track.
If this message displays, take the
vehicle to be serviced at your dealer.
Brake Burnishing
To prepare the brake system for track
events and racing, complete the
appropriate high performance brake
burnishing procedure described below.
New brake pads must be burnished
before racing or other competitive
driving.
Caution
These procedures are specific to the
V-Series with performance brake
linings package. This procedure
should not be run on other models
as damage may result.
Caution
The new vehicle break-in period
should be completed before
performing the brake burnishing
procedure or damage may occur to
the powertrain/engine. See New
Vehicle Break-In 0223.
When performed as instructed, this
procedure will not damage the brakes.
During the burnishing procedure, the
brake pads will smoke and produce an
odor. The braking force and pedal
travel may increase. After the
procedure is complete, the brake pads
may appear white at the rotor contact.
Run this procedure in a safe manner
and in compliance with all local and
state ordinances/laws regarding motor
vehicle operation. Run this procedure
only on dry pavement.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
DRIVING AND OPERATING 223
Starting and Operating
New Vehicle Break-In
Follow these recommended guidelines
during the first 2 400 km (1,500 mi) of
driving this vehicle. Parts have a
break-in period and performance will
be better in the long run.
For the first 2 400 km (1,500 mi):
.Avoid full throttle starts and abrupt
stops.
.Do not exceed 4000 engine rpm.
.Avoid driving at any one constant
speed, fast or slow.
.Avoid downshifting to brake or slow
the vehicle when the engine speed
will exceed 4000 rpm.
.Do not let the engine labor. Never
lug the engine in high gear at low
speeds.
.Do not participate in track events,
sport driving schools, or similar
activities during this break-in
period.
.Check engine oil with every
refueling and add if necessary. Oil
and fuel consumption may be
higher than normal during the first
2 400 km (1,500 mi).
.To break in new tires, drive at
moderate speeds and avoid hard
cornering for the first
300 km (200 mi). New tires do not
have maximum traction and may
tend to slip.
.New brake linings also need a
break-in period. Avoid making hard
stops during the first
300 km (200 mi). This is
recommended every time brake
linings are replaced.
Composite Materials
This vehicle may be equipped with
parts containing carbon fiber,
sheet-molding compound, or other
composite materials. Dealer-installed
accessories may also contain
composite materials.
{Warning
Exposed edges of parts containing
carbon fiber and other composite
materials can be sharp. Contact
with these parts could result in
injury. Use caution to avoid
contacting these parts, including
when washing the vehicle. If the
parts are damaged, replace the
parts promptly with replacements
from your dealer.
{Warning
Rocker extensions may break under
pressure, resulting in property
damage or injury. Do not stand on
the rocker extension or use it as
a step.
{Warning
Rear end spoilers may break under
pressure, resulting in property
damage or injury. Do not push the
vehicle by the spoiler or use the
spoiler as a handle.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
304 DRIVING AND OPERATING
.Shift into a gear.
.Release the parking brake.
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store the chocks.
Maintenance when Trailer
Towing
The vehicle needs service more often
when used to tow trailers. See
Maintenance Schedule 0383. It is
especially important to check the
automatic transmission fluid, engine
oil, axle lubricant, belts, cooling
system, and brake system before and
during each trip.
Check periodically that all nuts and
bolts on the trailer hitch are tight.
Engine Cooling when Trailer
Towing
The cooling system may temporarily
overheat during severe operating
conditions. See Engine Overheating
0 326.
Trailer Towing (LSY 2.0L
L4 and LGY 3.0L
V6 Engines Only)
Caution
Towing a trailer improperly can
damage the vehicle and result in
costly repairs not covered by the
vehicle warranty. To tow a trailer
correctly, follow the directions in
this section and see your dealer for
important information about
towing a trailer with the vehicle.
Trailer Weight
{Warning
Never exceed the towing capacity
for your vehicle.
Safe trailering requires monitoring the
weight, speed, altitude, road grades,
outside temperature, dimensions of
the front of the trailer, and how
frequently the vehicle is used to tow a
trailer.
Before towing a trailer, always
separately weigh:
.the total weight on the vehicle's
tires.
.the trailer.
.the trailer tongue.
{Warning
You and others could be seriously
injured or killed if the trailer is too
heavy or the trailer brakes are
inadequate for the load. The vehicle
may be damaged, and the repairs
would not be covered by the vehicle
warranty.
Only tow a trailer if all the steps in
this section have been followed. Ask
your dealer for advice and
information about towing a trailer.
Gross Vehicle Weight
Rating (GVWR)
For information about the vehicle's
maximum load capacity, see Vehicle
Load Limits 0219. When calculating
the GVWR with a trailer attached, the
trailer tongue weight must be
included as part of the weight the
vehicle is carrying.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
308 VEHICLE CARE
Vehicle Care
General Information
General Information . . . . . . . . . . . . . 309
California Proposition65 Warning . . . . . . . . . . . . . . . . . . . . . 309
California Perchlorate Materials Requirements . . . . . . . . . . . . . . . . . . . 309
Accessories and Modifications . . . . . . . . . . . . . . . . . . . 310
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . . . . . . 310
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . . . . . . 313
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . 316
Engine Oil Life System . . . . . . . . . . . 318
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
Engine Air Filter Life System . . . . 319
Engine Air Cleaner/Filter . . . . . . . . . 320
Cooling System . . . . . . . . . . . . . . . . . . . 322
Engine Overheating . . . . . . . . . . . . . . 326
Washer Fluid . . . . . . . . . . . . . . . . . . . . . 327
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 328
Brake Pad Life System (If Equipped) . . . . . . . . . . . . . . . . . . . . . . . 328
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . 329 Battery - North America . . . . . . . . . 330
All-Wheel Drive . . . . . . . . . . . . . . . . . . 331
Park Brake and P (Park)
Mechanism Check . . . . . . . . . . . . . . 331
Wiper Blade Replacement . . . . . . . 331
Windshield Replacement . . . . . . . . 332
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . 332
Headlamp Aiming
Front Headlamp Aiming . . . . . . . . . 333
Bulb Replacement
LED Lighting . . . . . . . . . . . . . . . . . . . . . 334
Electrical System
Electrical System Overload . . . . . . 334
Fuses and Circuit Breakers . . . . . . 334
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335
Instrument Panel Fuse Block . . . . 337
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342
All-Season Tires . . . . . . . . . . . . . . . . . . 342
Winter Tires . . . . . . . . . . . . . . . . . . . . . . 343
Run-Flat Tires . . . . . . . . . . . . . . . . . . . . 343
Self-Sealing Tires . . . . . . . . . . . . . . . . . 344
Low-Profile Tires . . . . . . . . . . . . . . . . . 344
Summer Tires . . . . . . . . . . . . . . . . . . . . 344
Tire Sidewall Labeling . . . . . . . . . . . 345 Tire Designations . . . . . . . . . . . . . . . . . 346
Tire Terminology and
Definitions . . . . . . . . . . . . . . . . . . . . . . 347
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 349
Tire Pressure for High-Speed Operation . . . . . . . . . . . . . . . . . . . . . . . . 350
Tire Pressure Monitor System . . . 351
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . . . . . . 352
Tire Inspection . . . . . . . . . . . . . . . . . . . 355
Tire Rotation . . . . . . . . . . . . . . . . . . . . . 355
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
Buying New Tires . . . . . . . . . . . . . . . . 357
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . 358
Uniform Tire Quality Grading . . . 359
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . . . . . . 360
Wheel Replacement . . . . . . . . . . . . . . 360
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . 361
If a Tire Goes Flat . . . . . . . . . . . . . . . . 361
Tire Sealant and Compressor Kit . . . . . . . . . . . . . . . . . 362
Storing the Tire Sealant and Compressor Kit . . . . . . . . . . . . . . . . . 368
Jump Starting
Jump Starting - NorthAmerica . . . . . . . . . . . . . . . . . . . . . . . . . 368

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
316 VEHICLE CARE
8. Brake Fluid Reservoir. SeeBrake
Fluid 0329.
9. Remote Negative (-) Battery Terminal. See Jump Starting - North
America 0368.
10. Engine Compartment Fuse Block
0335.
Engine Oil
To ensure proper engine performance
and long life, careful attention must
be paid to engine oil. Following these
simple, but important steps will help
protect your investment:
.Use engine oil approved to the
proper specification and of the
proper viscosity grade. See
“Selecting the Right Engine Oil” in
this section.
.Check the engine oil level regularly
and maintain the proper oil level.
See “Checking Engine Oil” and
“When to Add Engine Oil” in this
section.
.Change the engine oil at the
appropriate time. See Engine Oil Life
System 0318.
.Always dispose of engine oil
properly. See “What to Do with Used
Oil” in this section.
Checking Engine Oil
Check the engine oil level regularly,
every 650 km (400 mi), especially prior
to a long trip. The engine oil dipstick
handle is a loop. See Engine
Compartment Overview 0313 for the
location.
{Warning
The engine oil dipstick handle may
be hot; it could burn you. Use a
towel or glove to touch the dipstick
handle.
If a low oil Driver Information Center
(DIC) message displays, check the oil
level.
Follow these guidelines:
.To get an accurate reading, park the
vehicle on level ground. Check the
engine oil level after the engine has
been off for at least two hours.
Checking the engine oil level on
steep grades or too soon after
engine shutoff can result in incorrect readings. Accuracy
improves when checking a cold
engine prior to starting. Remove the
dipstick and check the level.
.If unable to wait two hours, the
engine must be off for at least
15 minutes if the engine is warm,
or at least 30 minutes if the engine
is not warm. Pull out the dipstick,
wipe it with a clean paper towel or
cloth, then push it back in all the
way. Remove it again, keeping the
tip down, and check the level.
When to Add Engine Oil
2.0L L4 Turbo (LSY) Engine
3.0L V6 Twin Turbo (LGY) Engine