check engine light CADILLAC CT6 2020 Owner's Guide

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-13566829) -
2020 - CRC - 6/11/19
292 VEHICLE CARE
Checking Brake Fluid
With the vehicle in P (Park) on a level
surface, the brake fluid level should be
between the minimum and maximum
marks on the brake fluid reservoir.
There are only two reasons why the
brake fluid level in the reservoir may
go down:
.Normal brake lining wear. When
new linings are installed, the fluid
level goes back up.
. A fluid leak in the brake hydraulic
system. Have the brake hydraulic
system fixed. With a leak, the
brakes will not work well.
Always clean the brake fluid reservoir
cap and the area around the cap
before removing it.
Do not top off the brake fluid. Adding
fluid does not correct a leak. If fluid is
added when the linings are worn,
there will be too much fluid when
new brake linings are installed. Add or
remove fluid, as necessary, only when
work is done on the brake hydraulic
system.{Warning
If too much brake fluid is added, it
can spill on the engine and burn,
if the engine is hot enough. You or
others could be burned, and the
vehicle could be damaged. Add
brake fluid only when work is done
on the brake hydraulic system.
When the brake fluid falls to a low
level, the brake warning light comes
on. See Brake System Warning Light
0 125.
Brake fluid absorbs water over time
which degrades the effectiveness of
the brake fluid. Replace brake fluid at
the specified intervals to prevent
increased stopping distance. See
Maintenance Schedule 0359.
What to Add
Use only GM approved DOT 3 brake
fluid from a clean, sealed container.
See Recommended Fluids and
Lubricants 0368.
{Warning
The wrong or contaminated brake
fluid could result in damage to the
brake system. This could result in
the loss of braking leading to a
possible injury. Always use the
proper GM approved brake fluid.
Caution
If brake fluid is spilled on the
vehicle's painted surfaces, the paint
finish can be damaged. Immediately
wash off any painted surface.
Battery - North America
The original equipment battery is
maintenance free. Do not remove the
cap and do not add fluid.
The battery is in the trunk under the
spare tire. Refer to the replacement
number shown on the original battery
label when a new 12-volt battery is
needed.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-13566829) -
2020 - CRC - 6/11/19
VEHICLE CARE 295
.To check the P (Park) mechanism's
holding ability: With the engine
running, shift to P (Park). Then
release the parking brake followed
by the regular brake.
Contact your dealer if service is
required.
Wiper Blade Replacement
Windshield wiper blades should be
inspected for wear or cracking.
For the proper type and size, see
Maintenance Replacement Parts 0369.
To replace the wiper blade assembly: 1. Pull the windshield wiper assembly slightly away from the
windshield.
2. Lift up on the latch in the middleof the wiper blade where the
wiper arm attaches.
3. With the latch open, pull the wiper blade down toward the
windshield far enough to release
it from the J-hooked end of the
wiper arm.
4. Remove the wiper blade.
Caution
Allowing the wiper arm to touch
the windshield when no wiper blade
is installed could damage the (Continued)
Caution (Continued)
windshield. Any damage that occurs
would not be covered by the vehicle
warranty. Do not allow the wiper
arm to touch the windshield.
5. Reverse Steps 1–3 for wiper blade replacement.
Windshield Replacement
Head-Up Display (HUD) System
The windshield is part of the HUD
system. If the windshield must be
replaced, get one that is designed for
HUD or the HUD image may look out
of focus.
Driver Assistance Systems
When a windshield replacement is
needed and the vehicle is equipped
with a front-looking camera sensor for
the Driver Assistance Systems, the
windshield must be installed
according to GM specifications for
these systems to work properly. If it is

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-13566829) -
2020 - CRC - 6/11/19
VEHICLE CARE 345
The jump start negative terminal (3)
and positive terminal (4) are on the
battery of the vehicle providing the
jump start.
The positive jump start connection for
the discharged battery is under a red
cover. Remove the cover to expose the
terminal.1. Check the other vehicle. It must have a 12-volt battery with a
negative ground system.
Caution
If the other vehicle does not have a
12-volt system with a negative
ground, both vehicles can be
damaged. Only use a vehicle that
has a 12-volt system with a
negative ground for jump starting.
2. Position the two vehicles so that they are not touching.
3. Set the parking brake and shift to P (Park). See Shifting Into Park
0 188.
Caution
If any accessories are left on or
plugged in during the jump starting
procedure, they could be damaged.
The repairs would not be covered
by the vehicle warranty. Whenever
possible, turn off or unplug all
accessories on either vehicle when
jump starting.
4. Turn the ignition off. Turn off all lights and accessories in both
vehicles, except the hazard
warning flashers if needed.
{Warning
An electric fan can start up even
when the engine is not running and
can injure you. Keep hands,
clothing, and tools away from any
underhood electric fan.
{Warning
Using a match near a battery can
cause battery gas to explode. People
have been hurt doing this, and
some have been blinded. Use a
flashlight if you need more light.
Battery fluid contains acid that can
burn you. Do not get it on you.
If you accidentally get it in your
eyes or on your skin, flush the place
with water and get medical help
immediately.
{Warning
Fans or other moving engine parts
can injure you badly. Keep your
hands away from moving parts
once the engine is running.
5. Connect one end of the red positive (+) cable to the remote
positive (+) terminal on the
discharged battery.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-13566829) -
2020 - CRC - 6/11/19
SERVICE AND MAINTENANCE 365
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.
The following list is intended to
explain the services and conditions to
look for that may indicate services are
required. Battery
The 12-volt battery supplies power to
start the engine and operate any
additional electrical accessories.
.
To avoid break-down or failure to
start the vehicle, maintain a
battery with full cranking power.
. Trained dealer technicians have
the diagnostic equipment to test
the battery and ensure that the
connections and cables are
corrosion-free.
Belts
. Belts may need replacing if they
squeak or show signs of cracking
or splitting.
. Trained dealer technicians have
access to tools and equipment to
inspect the belts and recommend
adjustment or replacement when
necessary. Brakes
Brakes stop the vehicle and are crucial
to safe driving.
.
Signs of brake wear may include
chirping, grinding, or squealing
noises, or difficulty stopping.
. Trained dealer technicians have
access to tools and equipment to
inspect the brakes and recommend
quality parts engineered for the
vehicle.
Fluids
Proper fluid levels and approved fluids
protect the vehicle’s systems and
components. See Recommended Fluids
and Lubricants 0368 for GM approved
fluids.
. Engine oil and windshield washer
fluid levels should be checked at
every fuel fill.
. Instrument cluster lights may
come on to indicate that fluids
may be low and need to be filled.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-13566829) -
2020 - CRC - 6/11/19
400 INDEX
IndexA
Accessories and Modifications . . . . . 272
Accessory Power . . . . . . . . . . . . . . . . . . . . 188
Active Fuel Management . . . . . . . . . . . 191
Adaptive Cruise Control . . . . . . . . . . . . 211
Add-On Electrical Equipment . . . . . . 269
Additional InformationOnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 392
Additional Maintenance and Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 365
Adjustments Lumbar, Front Seats . . . . . . . . . . . . . . . . 46
Lumbar, Rear Seats . . . . . . . . . . . . . . . . . 55
Thigh Support . . . . . . . . . . . . . . . . . . . . . . 47
Air Cleaner/Filter, Engine . . . . . . . . . . 282
Air Conditioning . . . . . . . . . . . . . . .158, 163
Air Filter Life System . . . . . . . . . . . . . . . . . . . . . . . . 281
Air Filter, Passenger
Compartment . . . . . . . . . . . . . . . . . . . . . 170
Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
How Does an Airbag Restrain? . . . . . 70
Passenger Sensing System . . . . . . . . . 71
What Makes an Airbag Inflate? . . . . 69
What Will You See after anAirbag Inflates? . . . . . . . . . . . . . . . . . . . 70 Airbag System (cont'd)
When Should an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Where Are the Airbags? . . . . . . . . . . . . 67
Airbags Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Passenger Status Indicator . . . . . . . 121
Readiness Light . . . . . . . . . . . . . . . . . . . 121
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
System Check . . . . . . . . . . . . . . . . . . . . . . . 65
Alarm Vehicle Security . . . . . . . . . . . . . . . . . . . . . 30
Alert Lane Change . . . . . . . . . . . . . . . . . . . . . . 252
Rear Pedestrian . . . . . . . . . . . . . . . . . . . 242
Side Blind Zone (SBZA) . . . . . . . . . . 252
All-Season Tires . . . . . . . . . . . . . . . . . . . . . 316
All-Wheel Drive . . . . . . . . . . . . . . . .199, 293
Antilock Brake System (ABS) . . . . . . 199 Warning Light . . . . . . . . . . . . . . . . . . . . 126
Appearance Care
Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353
Armrest Storage . . . . . . . . . . . . . . . . . . . . . . 99
Assistance Systems for Driving . . . . 243

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-13566829) -
2020 - CRC - 6/11/19
INDEX 401
Assistance Systems for Parkingand Backing . . . . . . . . . . . . . . . . . . . . . . . 235
Auto Stop Stop/Start System . . . . . . . . . . . . . . . . 186
Automatic Climate Control System . . . . . 158, 163
Dimming Mirrors . . . . . . . . . . . . . . . . . . . 34
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Emergency Braking (AEB) . . . . . . . . 246
Headlamp System . . . . . . . . . . . . . . . . 152
Transmission . . . . . . . . . . . . . . . . . . . . . . 193
Transmission Fluid . . . . . . . . . . . . . . . 281
Vehicle Hold Light . . . . . . . . . . . . . . . . 127
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . . . . . 197
Automatic Vehicle Hold (AVH) . . . . 202
B
Battery
Exterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Load Management . . . . . . . . . . . . . . . . 156
Power Protection . . . . . . . . . . . . . . . . . . 156
Battery - North America . . . . . .292, 343
Blade Replacement, Wiper . . . . . . . . . 295
Boost Gauge . . . . . . . . . . . . . . . . . . . . . . . . . 117
Brake Electric Boost . . . . . . . . . . . . . . . . . . . . . 199 Brake (cont'd)
Parking, Electric . . . . . . . . . . . . . . . . . . 200
System Warning Light . . . . . . . . . . . . 125
Brake Pad Life System . . . . . . . . . . . . . . 291
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290
Antilock . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291
Pad Life System . . . . . . . . . . . . . . . . . . . 291
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174 Automatic Emergency (AEB) . . . . . 246
Braking System Front Pedestrian (FPB) . . . . . . . . . . . 247
Break-In, New Vehicle . . . . . . . . . . . . . . 183
Bulb Replacement
Headlamp Aiming . . . . . . . . . . . . . . . . 297
Headlamps . . . . . . . . . . . . . . . . . . . . . . . . 297
Buying New Tires . . . . . . . . . . . . . . . . . . . 331
C
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . 106
California
Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . 272
California Proposition 65 Warning . . . . . . . . . . . . .271, 292, 343, Back Cover
Canadian Vehicle Owners . . . . . . . . . . . . . 2 Capacities and Specifications . . . . . . 373
Carbon Monoxide
Engine Exhaust . . . . . . . . . . . . . . . . . . . 192
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Winter Driving . . . . . . . . . . . . . . . . . . . . 178
Cargo Tie-Downs . . . . . . . . . . . . . . . . . . . . . . . . . 101
Caution, Danger, and Warning . . . . . . . . 2
Center Console Storage . . . . . . . . . . . . . 100
Chains, Tire . . . . . . . . . . . . . . . . . . . . . . . . . 335
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Charging System Light . . . . . . . . . . . . . 122
Check Engine Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . . . . . 123
Child Restraints Infants and Young Children . . . . . . . . 79
Lower Anchors and Tethers forChildren . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Older Children . . . . . . . . . . . . . . . . . . . . . . 77
Securing . . . . . . . . . . . . . . . . . . . . . . . . .92, 94
Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Circuit Breakers . . . . . . . . . . . . . . . . . . . . . 298
Cleaning Exterior Care . . . . . . . . . . . . . . . . . . . . . . 349
Interior Care . . . . . . . . . . . . . . . . . . . . . . 353

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-13566829) -
2020 - CRC - 6/11/19
INDEX 403
Driving (cont'd)Off-Road Recovery . . . . . . . . . . . . . . . . 175
Track Events and Competitive . . . 176
Vehicle Load Limits . . . . . . . . . . . . . . 179
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . 176
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
E
Electric Brake Boost . . . . . . . . . . . . . . . . 199
Electric Parking Brake . . . . . . . . . . . . . . 200
Electric Parking Brake Light . . . . . . . 125
Electrical Equipment, Add-On . . . . . 269
Electrical System
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 299
Fuses and Circuit Breakers . . . . . . . 298
Instrument Panel Fuse Block . . . . 306
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . 298
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 391
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . 282
Check Light (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . . . . . 123
Compartment Overview . . . . . . . . . . 274
Coolant Temperature Gauge . . . . . 119 Engine (cont'd)
Coolant Temperature
Warning Light . . . . . . . . . . . . . . . . . . . 129
Cooling System . . . . . . . . . . . . . . . . . . . 284
Drive Belt Routing . . . . . . . . . . . . . . . . 375
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Oil Life System . . . . . . . . . . . . . . . . . . . . 280
Oil Pressure Gauge . . . . . . . . . . . . . . . . 117
Oil Pressure Light . . . . . . . . . . . . . . . . . 130
Overheating . . . . . . . . . . . . . . . . . . . . . . . 288
Power Messages . . . . . . . . . . . . . . . . . . 139
Running While Parked . . . . . . . . . . . 192
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Engine Air Filter Life System . . . . . . 281
Engine Oil Temperature Gauge . . . . . . . . . . . . . . . 118
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . 155
Equipment, Towing . . . . . . . . . . . . . . . . . 267
Event Data Recorders . . . . . . . . . . . . . . 388
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . 155
Extended Parking . . . . . . . . . . . . . . . . . . . 191
Extender, Seat Belt . . . . . . . . . . . . . . . . . . 64
Exterior Lamp Controls . . . . . . . . . . . . 149
Exterior Lamps Off Reminder . . . . . . 151
Exterior Lighting Battery Saver . . . . 156
F
Filter,
Engine Air Cleaner . . . . . . . . . . . . . . . . 282
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . 151
Flashers, Hazard Warning . . . . . . . . . . 152
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336 Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 337
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
Fluid Automatic Transmission . . . . . . . . . 281
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . 33
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 386
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
Front Seats Heated and Ventilated . . . . . . . . . . . . . 51
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . 259
Economy, Driving for Better . . . . . 172
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . . . . . . 261
Filling the Tank . . . . . . . . . . . . . . . . . . . 260
Foreign Countries . . . . . . . . . . . . . . . . . 259

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-13566829) -
2020 - CRC - 6/11/19
INDEX 405
InformationPublication Ordering . . . . . . . . . . . . . 385
Infotainment . . . . . . . . . . . . . . . . . . . . . . . . 157
Infotainment System . . . . . . . . . . . . . . . 389
Instrument Cluster . . . . . . . . . . . .110, 113
Instrument Panel Storage Area . . . . . . . . . . . . . . . . . . . . . . . . 98
Instrument Panel Overview . . . . . . . . . . . 5
Interior Rearview Mirrors . . . . . . . . . . . 35
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
J
Jump Starting - North America . . . . 343
K
Keyless Entry Remote (RKE) System . . . . . . . . . . . . . . 10
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
L
Labeling, Tire Sidewall . . . . . . . . . . . . . 317
Lamps Cornering . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Courtesy . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Daytime Running (DRL) . . . . . . . . . . 151
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Exterior Controls . . . . . . . . . . . . . . . . . . 149
Exterior Lamps Off Reminder . . . . 151 Lamps (cont'd)
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Malfunction Indicator (Check
Engine) . . . . . . . . . . . . . . . . . . . . . . . . . . 123
On Reminder . . . . . . . . . . . . . . . . . . . . . . 131
Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Lane Change Alert (LCA) . . . . . . . . . . . 252
Lane Keep Assist (LKA) . . . . . . . . . . . . 254
Lane Keep Assist Light . . . . . . . . . . . . . 127
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . . 60
LATCH System Replacing Parts after a Crash . . . . . . 91
LATCH, Lower Anchors and
Tethers for Children . . . . . . . . . . . . . . . 84
LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . 297
Lighting Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Illumination Control . . . . . . . . . . . . . . 153
LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297
Lights Airbag Readiness . . . . . . . . . . . . . . . . . 121
Antilock Brake System (ABS)
Warning . . . . . . . . . . . . . . . . . . . . . . . . . 126
Automatic Vehicle Hold . . . . . . . . . . 127
Brake System Warning . . . . . . . . . . . 125
Charging System . . . . . . . . . . . . . . . . . . 122 Lights (cont'd)
Check Engine (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . . . . . 123
Cruise Control . . . . . . . . . . . . . . . . . . . . . 131
Door Ajar . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Driver Mode Control . . . . . . . . . . . . . . 129
Electric Parking Brake . . . . . . . . . . . . 125
Engine Coolant Temperature Warning . . . . . . . . . . . . . . . . . . . . . . . . . 129
Engine Oil Pressure . . . . . . . . . . . . . . . 130
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . 151
Gear Shifting . . . . . . . . . . . . . . . . . . . . . . 126
High-Beam On . . . . . . . . . . . . . . . . . . . . 131
High/Low Beam Changer . . . . . . . . . 151
Lane Keep Assist . . . . . . . . . . . . . . . . . . 127
Low Fuel Warning . . . . . . . . . . . . . . . . 130
Seat Belt Reminders . . . . . . . . . . . . . . 120
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Service Electric Parking Brake . . . 126
StabiliTrak OFF . . . . . . . . . . . . . . . . . . . 128
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 129
Traction Control System (TCS)/StabiliTrak . . . . . . . . . . . . . . . . 128
Traction Off . . . . . . . . . . . . . . . . . . . . . . . 128
Locking Rear Axle . . . . . . . . . . . . . . . . . . 208
Locks Automatic Door . . . . . . . . . . . . . . . . . . . . . 21
Delayed Locking . . . . . . . . . . . . . . . . . . . . 21

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-13566829) -
2020 - CRC - 6/11/19
406 INDEX
Locks (cont'd)Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Lockout Protection . . . . . . . . . . . . . . . . . 22
Power Door . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Loss of Control . . . . . . . . . . . . . . . . . . . . . . 175
Low Fuel Warning Light . . . . . . . . . . . 130
Low-Profile Tires . . . . . . . . . . . . . . . . . . . . 317
Lower Anchors and Tethers for Children (LATCH System) . . . . . . . . . 84
Lumbar Adjustment . . . . . . . . . . . . . 46, 55 Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . . . . . . . . . 371
Maintenance and Care Additional . . . . . . . . . . . . . . . . . . . . . . . . . 365
Maintenance Schedule . . . . . . . . . . . . . 359 Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . . . . . 368
Malfunction Indicator Lamp . . . . . . . 123
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . 197
Massage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Memory Seats . . . . . . . . . . . . . . . . . . . . . . . . 48
Messages Engine Power . . . . . . . . . . . . . . . . . . . . . 139 Messages (cont'd)
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Vehicle Speed . . . . . . . . . . . . . . . . . . . . . 139
Mirror
Rear Camera . . . . . . . . . . . . . . . . . . . . . . . . 35
Mirrors Automatic Dimming . . . . . . . . . . . . . . . . 34
Automatic Dimming Rearview . . . . . 35
Convex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Folding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Heated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Tilt in Reverse . . . . . . . . . . . . . . . . . . . . . . 34
Mirrors, Interior Rearview . . . . . . . . . . . 35
Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Driver Control . . . . . . . . . . . . . . . . . . . . . 204
Monitor System, Tire Pressure . . . . . 324
N
Navigation Connected Services . . . . . . . . . . . . . . . 397
Net, Convenience . . . . . . . . . . . . . . . . . . . 101
New Vehicle Break-In . . . . . . . . . . . . . . . 183
Night Vision System . . . . . . . . . . . . . . . . 250
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 Off-Road
Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277
Engine Oil Life System . . . . . . . . . . . 280
Engine Oil Pressure Gauge . . . . . . . 117
Pressure Light . . . . . . . . . . . . . . . . . . . . . 130
Older Children, Restraints . . . . . . . . . . . 77
Online Owner Center . . . . . . . . . . . . . . . 379
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 388
OnStar Additional Information . . . . 392
OnStar Emergency . . . . . . . . . . . . . . . . . . 391
OnStar Overview . . . . . . . . . . . . . . . . . . . . 390
OnStar Security . . . . . . . . . . . . . . . . . . . . . 391
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Overheating, Engine . . . . . . . . . . . . . . . . 288
Overview Instrument Panel . . . . . . . . . . . . . . . . . . . . 5
P
ParkShifting Out of . . . . . . . . . . . . . . . . . . . . 189
Park Assist . . . . . . . . . . . . . . . . . . . . . . . . . . 235
Parking Brake and P (Park)
Mechanism Check . . . . . . . . . . . . . . . 294
Extended . . . . . . . . . . . . . . . . . . . . . . . . . . 191

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-13566829) -
2020 - CRC - 6/11/19
408 INDEX
RoadsDriving, Wet . . . . . . . . . . . . . . . . . . . . . . . 176
Roadside Service . . . . . . . . . . . . . . . . . . . . 380
Roof Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Rotation, Tires . . . . . . . . . . . . . . . . . . . . . . 329
Routing, Engine Drive Belt . . . . . . . . . 375
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
S
Safety Defects ReportingCanadian Government . . . . . . . . . . . . 386
General Motors . . . . . . . . . . . . . . . . . . . 387
U.S. Government . . . . . . . . . . . . . . . . . . 386
Safety Locks . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Safety System Check . . . . . . . . . . . . . . . . 64
Scheduling Appointments . . . . . . . . . . 382
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Extender . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
How to Wear Seat BeltsProperly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . 60
Reminders . . . . . . . . . . . . . . . . . . . . . . . . . 120
Replacing after a Crash . . . . . . . . . . . . . 65
Use During Pregnancy . . . . . . . . . . . . . . 63 Seats
Head Restraints . . . . . . . . . . . . . . . . . . . . . 44
Heated and Ventilated Front . . . . . . . 51
Heated and Ventilated, Rear . . . . . . . 56
Lumbar Adjustment, Front . . . . . . . . . 46
Lumbar Adjustment, Rear . . . . . . . . . . 55
Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Power Adjustment, Front . . . . . . . . . . 46
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Reclining Seatbacks . . . . . . . . . . . . . . . . 48
Securing Child Restraints . . . . . . . 92, 94
Security
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 391
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Vehicle Alarm . . . . . . . . . . . . . . . . . . . . . . . 30
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 Accessories andModifications . . . . . . . . . . . . . . . . . . . . 272
Doing Your Own Work . . . . . . . . . . . 272
Maintenance Records . . . . . . . . . . . . 371
Maintenance, General Information . . . . . . . . . . . . . . . . . . . . . . 357
Parts Identification . . . . . . . . . . . . . . . 372
Scheduling Appointments . . . . . . . . 382
Service Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126 Services
Special Application . . . . . . . . . . . . . . . 364
Servicing the Airbag . . . . . . . . . . . . . . . . . 75
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Out of Park . . . . . . . . . . . . . . . . . . . . . . . . 189
Side Blind Zone Alert (SBZA) . . . . . . 252
Signals, Turn and Lane-Change . . . . 153
Spare Tire
Compact . . . . . . . . . . . . . . . . . . . . . . . . . . . 342
Special Application Services . . . . . . . 364
Specifications and Capacities . . . . . . 373
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . 115
StabiliTrak
OFF Light . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Start Assist, Hill . . . . . . . . . . . . . . . . . . . . 201
Start Vehicle, Remote . . . . . . . . . . . . . . . 17
Starter Switch Check . . . . . . . . . . . . . . . 294
Starting the Engine . . . . . . . . . . . . . . . . . 185
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174 Heated Wheel . . . . . . . . . . . . . . . . . . . . . 103
Wheel Adjustment . . . . . . . . . . . . . . . . 103
Wheel Controls . . . . . . . . . . . . . . . . . . . 103
Stop/Start System . . . . . . . . . . . . . . . . . . 186
Storage Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Storage Areas Armrest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99