differential CADILLAC CT5 2023 Owners Manual

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
140 Instruments and Controls
DIC information is broken
down into two main zones:
Left Zone :Displays on the
instrument cluster to the left
of the speedometer.
Right Zone : Displays on the
instrument cluster to the right
of the speedometer.
SorT: Press to move left or
right between the interactive
display zones in the cluster.
Press the thumbwheel to
select.
yorz: Use the thumbwheel
to scroll up or down in a list.
Press the thumbwheel to
select.
DIC Info Tiles Selection
The following is the list of all
possible DIC Info Tiles.
Depending on the vehicle,
some may not be available.
Left Zone
Battery Voltage : Displays the
current battery voltage. The
battery voltage can fluctuate
while viewing this information
on the DIC. This is normal.
Coolant Temperature :
Displays the coolant
temperature in either degrees
Celsius (°C) or degrees
Fahrenheit (°F).
eLSD : Displays the amount of
rear differential coupling when
the Electronic Limited-Slip
Differential (eLSD) is active
and functioning during vehicle
operation. A reading of 1% is
an open differential and 100% is locked. It is normal for the
value to make small or large
changes due to driving
conditions and driver inputs.
For the V-Series Blackwing
models, the eLSD maintains
some coupling even if the
vehicle is stationary or not
accelerating. Coupling values
of 3% and up are typical. See
Limited-Slip Differential
0302.
Engine Boost : If equipped,
displays engine manifold
pressure relative to ambient
air pressure. It will display
boost pressure generated by
the turbocharging system.
Instantaneous Fuel
Economy/Economy Trend :
Displays the current fuel
economy in liters per
100 kilometers (L/100 km) or
miles per gallon (mpg). This
number reflects only the
approximate fuel economy and
changes frequently as driving
conditions change. This display
cannot be reset.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/10/22
240 Driving and Operating
Driving and
Operating
Driving Information
Driving for Better FuelEconomy . . . . . . . . . . . . . . . . . . . . 241
Distracted Driving . . . . . . . . . 242
Defensive Driving . . . . . . . . . . 242
Impaired Driving . . . . . . . . . . . 243
Control of a Vehicle . . . . . . 243
Braking . . . . . . . . . . . . . . . . . . . . . . . 243
Steering . . . . . . . . . . . . . . . . . . . . . . 244
Off-Road Recovery . . . . . . . 245
Loss of Control . . . . . . . . . . . . 245
Track Events and Competitive Driving
(V-Series and V-Series
Blackwing) . . . . . . . . . . . . . . . . . 246
Driving on Wet Roads . . . . 257
Hill and Mountain Roads . . . . . . . . . . . . . . . . . . . . . . . 258
Winter Driving . . . . . . . . . . . . . . 259
If the Vehicle Is Stuck . . . . . 261
Vehicle Load Limits . . . . . . . 261
Starting and Operating
New Vehicle Break-In . . . . 265
Composite Materials . . . . . 266
Ignition Positions . . . . . . . . . . 267 Starting the Engine . . . . . . . 269
Stop/Start System . . . . . . . . 270
Engine Heater . . . . . . . . . . . . . . 272
Retained Accessory
Power (RAP) . . . . . . . . . . . . . . . 273
Shifting Into Park . . . . . . . . . . 273
Shifting out of Park . . . . . . . 274
Parking (Manual Transmission) . . . . . . . . . . . . . 275
Parking over Things That Burn . . . . . . . . . . . . . . . . . . 275
Active Fuel Management . . . . . . . . . . . . . . 275
Extended Parking . . . . . . . . . 275
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . 276
Running the Vehicle While Parked . . . . . . . . . . . . . . 276
Automatic Transmission
AutomaticTransmission . . . . . . . . . . . . . . 277
Manual Mode . . . . . . . . . . . . . . . 282
Manual Transmission
Manual Transmission . . . . . 283
Active Rev Match . . . . . . . . . 286
Drive Systems
All-Wheel Drive . . . . . . . . . . . . . 287
Brakes
Electric Brake Boost . . . . . . 287
Antilock Brake System (ABS) . . . . . . . . . . . . . 287
Electric Parking Brake . . . 288
Brake Assist . . . . . . . . . . . . . . . . 289
Hill Start Assist (HSA) . . . . 289
Automatic Vehicle Hold (AVH) . . . . . . . . . . . . . . . . . 290
Ride Control Systems
Traction Control/Electronic Stability
Control . . . . . . . . . . . . . . . . . . . . . . 291
Driver Mode Control . . . . . . 293
Competitive Driving Mode . . . . . . . . . . . . . . 299
Limited-Slip
Differential . . . . . . . . . . . . . . . . . 302
Cruise Control
Cruise Control . . . . . . . . . . . . . 302
Adaptive Cruise Control(Advanced) . . . . . . . . . . . . . . . . 305
Super Cruise . . . . . . . . . . . . . . . . 317
Driver Assistance
Systems
Driver Assistance Systems . . . . . . . . . . . . . . . . . . . . 334

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/10/22
248 Driving and Operating
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.
.The axle lubricant should be
replaced with new lubricant.
.On vehicles without a
differential cooler, additional
cooling capacity is required
for continuous competitive
driving. The V-Series
Blackwing has a differential
cooler, so no additional
cooling capacity is
necessary.
Engine OilCaution
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 0383.
Check the oil level often during
track events and competitive
driving, and keep the oil level
at or near the upper mark. See
“Checking the Engine Oil" in
Engine Oil 0383.
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
0361.
Automatic or Manual
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 the dealer.
Brakes
Battery Disconnect
Disconnect the battery before
servicing the hydraulic brake
system. It is critical to
disconnect the battery before
bleeding the system, replacing
the pads, or any other work.
The battery must be
disconnected to prevent the
brake master cylinder from
pressurizing the hydraulic
system during its automated

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/10/22
Driving and Operating 299
Engine/Shift
Engine/Shift adjusts the
throttle response, gear
shifting and engine
performance. Throttle
response increases in the
Sport, Track, and Snow/Ice
settings, and gear shifting is
more aggressive.
–Snow/Ice, Tour, Sport, Track
Engine Sound
Engine sound adjusts the
volume of engine noise. The
settings range from quietest
to loudest volume from
Stealth through Track.
–Stealth, Tour, Sport, Track
PTM (If Equipped)
PTM controls vehicle
performance systems for
professional handling on race
tracks. Traction Control and
Stability Control are reduced
when moving through each of
the settings. Changing PTM
settings may also
automatically change theother subsystem settings.
While driving on a track, turn
off all active safety features.
While driving on a track, turn
off applicable driver
assistance features. For more
information, see Assistance
Systems for Driving
0346. For
more information on PTM, see
Competitive Driving Mode
0 299.
–Off, Wet, Dry, Sport, Race 1,
Race 2
Competitive
Driving Mode
To select this optional
handling mode, place the
vehicle in Sport Mode and
press
gtwo times and the
Driver Information Center
(DIC) will display
COMPETITIVE MODE ON.
While in the Competitive
Driving Mode, the traction off
light
iand StabiliTrak/ESC
OFF light
gwill come on in the
instrument cluster. Traction
Control System (TCS) does not limit wheel spin, the
Electronic Limited-Slip
Differential (eLSD) allows
increased vehicle agility, and
more effort is required to turn
the steering wheel. See
“Limited-Slip Differential
(V–Series Only)”
later in this
section. Adjust your driving
accordingly.
Press
gagain, or turn the
vehicle to accessory mode and
restart the vehicle, to turn
TCS back on. The traction off
light
iand StabiliTrak/ESC
OFF light
gwill go out.
Caution
When traction control is
turned off, or Competitive
Driving Mode is active, it is
possible to lose traction.
Performance Traction
Management (PTM)
If equipped, PTM can be
activated through V-Mode
customization or by pressing

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/10/22
302 Driving and Operating
Launch Control will initially
limit engine speed as you
rapidly apply the accelerator
pedal to wide open throttle.
Allow the engine rpm to
stabilize. A smooth, quick
release of the brake pedal,
while maintaining the fully
pressed accelerator pedal, will
manage wheel slip.
After the vehicle is launched,
the system continues in
Competitive Driving Mode
or PTM.
Competitive Driving Mode,
PTM, and Launch Control are
systems designed for a closed
course race track and not
intended for public roads. The
systems are not intended to
compensate for lack of driver
experience or familiarity with
the race track.Limited-Slip
Differential
If equipped, the Electronic
Limited-Slip Differential (eLSD)
is automatically activated.
eLSD actively monitors vehicle
sensors and driver inputs to
determine the amount of
change for the conditions.
With eLSD, the vehicle has:
.Enhanced high-speed
control.
.Improved traction through
corners, allowing more
acceleration.
.More precise steering.
.Increased vehicle agility.
.Integration with StabiliTrak/
Electronic Stability
Control (ESC).
For vehicles with eLSD, driven
under severe conditions, the
rear axle fluid should be
changed. See Competitive
Driving Mode 0299 and
Maintenance Schedule 0471.
Cruise Control
{
Warning
Cruise control can be
dangerous where you
cannot drive safely at a
steady speed. Do not use
cruise control on winding
roads or in heavy traffic.
Cruise control can be
dangerous on slippery roads.
On such roads, fast changes
in tire traction can cause
excessive wheel slip, and
you could lose control. Do
not use cruise control on
slippery roads.
With cruise control, a speed of
about 40 km/h (25 mph) or
more can be maintained
without keeping your foot on
the accelerator. Cruise control
does not work at speeds
below about 40 km/h (25 mph).
If equipped with a manual
transmission, the cruise
control will remain active when

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
472 Service and Maintenance
may also be needed if you
notice reduced airflow,
windows fogging up,
or odors. Your local GM
Service location can help you
determine when it is the
right time to replace your
filter.
Every 72 000 km (45,000 mi)
.Change rear axle fluid,
if equipped with limited slip
differential. 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.
Every 96 000 km (60,000 mi)
.Replace spark plugs. Inspect
spark plug wires and/or
boots. Every 156 000 km
(97,500 mi)
.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.
Every 161 000 km
(100,000 mi)
.Replace hood and/or body
lift support gas struts. Or
every 10 years, whichever
comes first. See Gas Strut(s)
0 408. Every 240 000 km
(150,000 mi)
.Change rear axle fluid,
without limited slip
differential. 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 front axle 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.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
474 Service and Maintenance
.Change rear axle fluid, with
limited slip differential. 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 front axle 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.Every 120 000 km
(75,000 mi)
.Change rear axle fluid,
without limited slip
differential. 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.
Owner Checks and
Services
Every Five Years
.Replace brake fluid every
five years. See Brake Fluid
0
404.
Every Seven Years
.Replace Air Conditioning
Desiccant every seven years.
The air conditioning system
requires maintenance every
seven years. This service
requires replacement of the desiccant to help the
longevity and efficient
operation of the air
conditioning system. This
service can be complex. See
your dealer.
Multi-Point Vehicle
Inspection (MPVI)
A Multi Point Vehicle
Inspection (MPVI) completed
by a GM dealer technician is a
maintenance assessment of
your vehicle. The benefit of
the MPVI is to identify and
inform the customer of service
items that require immediate
attention and those that may
require attention in the future.
The technician will perform the
following checks on your
vehicle. For a complete list of
checks, inspections, and
services, see your dealer.
Some items may not apply to
your vehicle and/or region.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
Technical Data 483
ApplicationCapacities
Metric English
Front Axle 0.40 L 0.42 qt
Rear Axle
IOpen Differential - Small 0.75 L 0.79 qt
IOpen Differential - Large 1.0 L 1.0 qt
IMechanical Limited Slip 1.0 L 1.0 qt
IElectronic Limited Slip 1.5 L 1.5 qt
Fuel Tank 66.0 L 17.5 gal
Transfer Case (AWD) 0.80 L 0.85 qt
Wheel Nut Torque 190Y 140 lb ft
All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this manual.
Recheck fluid level after filling.
*Engine cooling system capacity values are based on the entire cooling system and its components.
Engine Specifications
Engine VIN CodeTransmission Spark Plug Gap
2.0L L4 Engine (LSY) KAutomatic0.65–0.75 mm (0.026–0.030 in)
3.0L V6 Engine (LGY) WAutomatic0.65–0.75 mm (0.026–0.030 in)
6.2L V8 Engine (LT4) 6Automatic
Manual 0.725–0.875 mm (0.028–
0.034 in)
Spark plug gaps are preset by the manufacturer. Re-gapping the spark plug is not recommended and can damage the
spark plug.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/11/22
514 INDEX
Coverage Explanations . . . . . 193
Cruise Control . . . . . . . . . . . . . . . . 302Adaptive . . . . . . . . . . . . . . . . . . . . . 305
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Super . . . . . . . . . . . . . . . . . . . . . . . . . . 317
Cupholders . . . . . . . . . . . . . . . . . . . . .100
Customer Assistance Offices . . . . . . . . . . . . . . . . . . . . . . . . 487
Text Telephone (TTY)Users . . . . . . . . . . . . . . . . . . . . . . . . 488
Customer Information
Publications OrderingInformation . . . . . . . . . . . . . . . . 496
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . 485
Cybersecurity . . . . . . . . . . . . . . . . 499
D
Damage Repair,
Collision . . . . . . . . . . . . . . . . . . . . . . . 493
Danger, Warning, and
Caution . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Dashboard . . . . . . . . . . . . . . . . . . . . . . . . . 5
Data Collection Infotainment System . . . . . 500
OnStar . . . . . . . . . . . . . . . . . . . . . . . . 500
Data Recorder Performance . . . . . . . . . . . . . . . . 200 Data Recorders, Event . . . . 499
Database Coverage
Explanations . . . . . . . . . . . . . . . . . 193
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . 154
Defensive Driving . . . . . . . . . . . . 242
Delayed Locking . . . . . . . . . . . . . . . . 21
Destination . . . . . . . . . . . . . . . . . . . . . 184
Diagnostics Connected Services . . . . . . . 510
Differential,
Limited-Slip . . . . . . . . . . . . . . . . . . 302
Disabled Vehicle Transporting . . . . . . . . . . . . . . . . 455
Distracted Driving . . . . . . . . . . . 242
Dome Lamps . . . . . . . . . . . . . . . . . . . 157
Door Ajar Light . . . . . . . . . . . . . . . . . . . . . 136
Delayed Locking . . . . . . . . . . . . . . 21
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Power Locks . . . . . . . . . . . . . . . . . . . 21
Drive Belt Routing, Engine . . . . . . . . . . . . . . . . . . . . . . . . . 484
Drive Systems All-Wheel Drive . . . . . . 287, 406
Driver Assistance Systems . . . . . . 334 Driver (cont'd)
Information
Center (DIC) . . . . . . . . . . 136, 139
Mode Control . . . . . . . . . . . . . . . 293
Mode Control Light . . . . . . . . 132
Teen . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
Driving
Assistance Systems . . . . . . 346
Better Fuel Economy . . . . . . 241
Characteristics andTowing Tips . . . . . . . . . . . . . . . 365
Competitive . . . . . . . . . . . . . . . . . 299
Defensive . . . . . . . . . . . . . . . . . . . . 242
Distracted . . . . . . . . . . . . . . . . . . . 242
Hill and Mountain Roads . . . . . . . . . . . . . . . . . . . . . . . 258
If the Vehicle is Stuck . . . . . 261
Impaired . . . . . . . . . . . . . . . . . . . . . . 243
Loss of Control . . . . . . . . . . . . 245
Off-Road Recovery . . . . . . . 245
Track Events and Competitive . . . . . . . . . . . . . . . 246
Vehicle Load Limits . . . . . . . . 261
Wet Roads . . . . . . . . . . . . . . . . . . . 257
Winter . . . . . . . . . . . . . . . . . . . . . . . . 259
Dual
Automatic ClimateControl System . . . . . . . . . . . 233

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/11/22
518 INDEX
Lights (cont'd)Antilock Brake System
(ABS) Warning . . . . . . . . . . . . . 128
Automatic Emergency Braking (AEB)
Disabled . . . . . . . . . . . . . . . . . . . . . 130
Automatic
Vehicle Hold . . . . . . . . . . . . . . . . 129
Brake System Warning . . . 127
Charging System . . . . . . . . . . . 124
Check Engine (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 125
Cruise Control Light . . . . . . . 135
Door Ajar . . . . . . . . . . . . . . . . . . . . . . 136
Driver Mode Control . . . . . . . 132
Electric Parking Brake . . . . 128
Engine Coolant Temperature
Warning . . . . . . . . . . . . . . . . . . . . . 131
Engine Oil Pressure . . . . . . . . 134
Gauges and Indicators . . . . . 112
High-Beam On . . . . . . . . . . . . . . . 135
Lane Keep Assist . . . . . . . . . . . 129
Low Fuel Warning . . . . . . . . . . 134
Performance Shifting . . . . . 129
Seat Belt Reminders . . . . . . 122
Security . . . . . . . . . . . . . . . . . . . . . . . 135 Lights (cont'd)
Service Electric
Parking Brake . . . . . . . . . . . . . . 128
StabiliTrak OFF . . . . . . . . . . . . . 131
Tire Pressure . . . . . . . . . . . . . . . . 133
Traction Control System
(TCS)/StabiliTrak . . . . . . . . . . 131
Traction Off . . . . . . . . . . . . . . . . . . 130
Limited-Slip Differential . . . 302
Lock Steering Column . . . . . . . . . . . . . . 31
Locks Automatic Door . . . . . . . . . . . . . . . 21
Delayed Locking . . . . . . . . . . . . . . 21
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Lockout Protection . . . . . . . . . 22
Power Door . . . . . . . . . . . . . . . . . . . . 21
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Loss of Control . . . . . . . . . . . . . . 245
Low Fuel Warning Light . . . . 134
Low-Profile Tires . . . . . . . . . . . . . 421
Lower Anchors and Tethers for Children
(LATCH System) . . . . . . . . . . . . . 87
Lumbar Adjustment . . . . . . . . . . 46
Front Seats . . . . . . . . . . . . . . . . . . . 46M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . . . 479
Maintenance Schedule . . . . . 471 Recommended Fluids
and Lubricants . . . . . . . . . . . 476
Malfunction Indicator Lamp . . . . . . . . . . . . . . 125
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . . 282
Transmission . . . . . . . . . . . . . . . 283
Transmission Fluid . . . . . . . . 388
Map Data Updates . . . . . . . . . . . 192
Maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Massage Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Matching Active Rev . . . . . . . . . . . . . . . . . . . 286
Media
Avoiding UntrustedDevices . . . . . . . . . . . . . . . . . . . . . . 174
Memory Seats . . . . . . . . . . . . . . . . . . 48
Messages Engine Power . . . . . . . . . . . . . . . 148
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 147
Vehicle Speed . . . . . . . . . . . . . . . 148