Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Vehicle Care 261
Vehicle Care General Information General Information . . . . . . . . . . 262
California Proposition
65 Warning . . . . . . . . . . . . . . . . . 262
California Perchlorate
Materials Requirements . . . . . 262
Accessories and
Modifications . . . . . . . . . . . . . . . . 262
Vehicle Checks Doing Your Own
Service Work . . . . . . . . . . . . . . . 263
Hood . . . . . . . . . . . . . . . . . . . . . . . . . 264
Engine Compartment
Overview . . . . . . . . . . . . . . . . . . . . 265
Engine Oil . . . . . . . . . . . . . . . . . . . . 270
Engine Oil Life System . . . . . . . 272
Automatic Transmission
Fluid . . . . . . . . . . . . . . . . . . . . . . . . 273
Engine Air Cleaner/Filter . . . . . . 273
Cooling System . . . . . . . . . . . . . . 275
Engine Coolant . . . . . . . . . . . . . . . 277
Engine Overheating . . . . . . . . . . 280
Washer Fluid . . . . . . . . . . . . . . . . . 281
Brakes . . . . . . . . . . . . . . . . . . . . . . . 282
Brake Fluid . . . . . . . . . . . . . . . . . . . 283
Battery - North America . . . . . . 284
All-Wheel Drive . . . . . . . . . . . . . . . 284 Starter Switch Check . . . . . . . . . 285
Automatic Transmission Shift
Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 285
Park Brake and P (Park)
Mechanism Check . . . . . . . . . . 286
Wiper Blade Replacement . . . . 286
Windshield Replacement . . . . . 287
Headlamp Aiming Headlamp Aiming . . . . . . . . . . . . 287
Bulb Replacement Bulb Replacement . . . . . . . . . . . . 288
LED Lighting . . . . . . . . . . . . . . . . . 288
License Plate Lamp . . . . . . . . . . 288
Replacement Bulbs . . . . . . . . . . . 289
Electrical System Electrical System Overload . . . 289
Fuses and Circuit Breakers . . . 290
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 290
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 293
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 295
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 299
All-Season Tires . . . . . . . . . . . . . . 300
Winter Tires . . . . . . . . . . . . . . . . . . 300 Low-Profile Tires . . . . . . . . . . . . . 300
Summer Tires . . . . . . . . . . . . . . . . 301
Tire Sidewall Labeling . . . . . . . . 301
Tire Designations . . . . . . . . . . . . . 303
Tire Terminology and
Definitions . . . . . . . . . . . . . . . . . . 304
Tire Pressure . . . . . . . . . . . . . . . . . 306
Tire Pressure for High-Speed
Operation . . . . . . . . . . . . . . . . . . . 308
Tire Pressure Monitor
System . . . . . . . . . . . . . . . . . . . . . . 308
Tire Pressure Monitor
Operation . . . . . . . . . . . . . . . . . . . 309
Tire Inspection . . . . . . . . . . . . . . . . 312
Tire Rotation . . . . . . . . . . . . . . . . . 313
When It Is Time for New
Tires . . . . . . . . . . . . . . . . . . . . . . . . 314
Buying New Tires . . . . . . . . . . . . . 315
Different Size Tires and
Wheels . . . . . . . . . . . . . . . . . . . . . . 316
Uniform Tire Quality
Grading . . . . . . . . . . . . . . . . . . . . . 316
Wheel Alignment and Tire
Balance . . . . . . . . . . . . . . . . . . . . . 318
Wheel Replacement . . . . . . . . . . 318
Tire Chains . . . . . . . . . . . . . . . . . . . 319
If a Tire Goes Flat . . . . . . . . . . . . 320
Tire Changing . . . . . . . . . . . . . . . . 321
Compact Spare Tire . . . . . . . . . . 326
Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Vehicle Care 313
Tire Rotation Tires should be rotated every
12 000 km/7,500 mi. See
Maintenance Schedule 0 344 .
Tires are rotated to achieve a
uniform wear for all tires. The
first rotation is the most
important.
Anytime unusual wear is
noticed, rotate the tires as soon
as possible, check for proper tire
inflation pressure, and check for
damaged tires or wheels. If the
unusual wear continues after the
rotation, check the wheel
alignment. See When It Is Time
for New Tires 0 314
and Wheel Replacement 0 318 . Use this rotation pattern if the
vehicle has different size tires
on the front and rear.
Different tire sizes should not be
rotated front to rear. Use this rotation pattern when
rotating tires of the same size
installed on all four wheel
positions.
If the vehicle has a compact
spare tire, do not include it in the
tire rotation.
Adjust the front and rear tires to
the recommended inflation
pressure on the Tire and
Loading Information label after
the tires have been rotated. See
Tire Pressure 0 306
and Vehicle Load Limits 0 198 .
Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
318 Vehicle Care to the generation of heat and its
ability to dissipate heat when
tested under controlled
conditions on a specified indoor
laboratory test wheel. Sustained
high temperature can cause the
material of the tire to degenerate
and reduce tire life, and
excessive temperature can lead
to sudden tire failure. The grade
C corresponds to a level of
performance which all
passenger car tires must meet
under the Federal Motor Safety
Standard No. 109. Grades B and
A represent higher levels of
performance on the laboratory
test wheel than the minimum
required by law. Warning: The
temperature grade for this tire is
established for a tire that is
properly inflated and not
overloaded. Excessive speed,
underinflation, or excessive
loading, either separately or in
combination, can cause heat
buildup and possible tire failure. Wheel Alignment and Tire
Balance The tires and wheels were aligned
and balanced at the factory to
provide the longest tire life and best
overall performance. Adjustments to
wheel alignment and tire balancing
are not necessary on a regular
basis. Consider an alignment check
if there is unusual tire wear or the
vehicle is significantly pulling to one
side or the other. Some slight pull to
the left or right, depending on the
crown of the road and/or other road
surface variations such as troughs
or ruts, is normal. If the vehicle is
vibrating when driving on a smooth
road, the tires and wheels may need
to be rebalanced. See your dealer
for proper diagnosis.
Wheel Replacement Replace any wheel that is bent,
cracked, or badly rusted or
corroded. If wheel nuts keep coming
loose, the wheel, wheel bolts, and
wheel nuts should be replaced.
If the wheel leaks air, replace it. Some aluminum wheels can be
repaired. See your dealer if any of
these conditions exist.
Your dealer will know the kind of
wheel that is needed.
Each new wheel should have the
same load-carrying capacity,
diameter, width, offset, and be
mounted the same way as the one it
replaces.
Replace wheels, wheel bolts, wheel
nuts, or Tire Pressure Monitor
System (TPMS) sensors with new
GM original equipment parts.
{ WarningUsing the wrong replacement
wheels, wheel bolts, or wheel
nuts can be dangerous. It could
affect the braking and handling of
the vehicle. Tires can lose air,
and cause loss of control, causing
a crash. Always use the correct
wheel, wheel bolts, and wheel
nuts for replacement.
Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Service and Maintenance 351Lamps
Properly working headlamps,
taillamps, and brake lamps are
important to see and be seen on
the road.
.
Signs that the headlamps need
attention include dimming, failure
to light, cracking, or damage.
The brake lamps need to be
checked periodically to ensure
that they light when braking.
.
With a multi-point inspection,
your dealer can check the lamps
and note any concerns.
Shocks and Struts
Shocks and struts help aid in control
for a smoother ride.
.
Signs of wear may include
steering wheel vibration, bounce/
sway while braking, longer
stopping distance, or uneven
tire wear.
.
As part of the multi-point
inspection, trained dealer
technicians can visually inspect
the shocks and struts for signs of leaking, blown seals,
or damage, and can advise
when service is needed.
Tires
Tires need to be properly inflated,
rotated, and balanced. Maintaining
the tires can save money and fuel,
and can reduce the risk of tire
failure.
.
Signs that the tires need to be
replaced include three or more
visible treadwear indicators; cord
or fabric showing through the
rubber; cracks or cuts in the
tread or sidewall; or a bulge or
split in the tire.
.
Trained dealer technicians can
inspect and recommend the right
tires. Your dealer can also
provide tire/wheel balancing
services to ensure smooth
vehicle operation at all speeds.
Your dealer sells and services
name brand tires.
Vehicle Care
To help keep the vehicle looking like
new, vehicle care products are
available from your dealer. For information on how to clean and
protect the vehicle ’ s interior and
exterior, see Interior Care 0 338 and
Exterior Care 0 333 .
Wheel Alignment
Wheel alignment is critical for
ensuring that the tires deliver
optimal wear and performance.
.
Signs that the alignment may
need to be adjusted include
pulling, improper vehicle
handling, or unusual tire wear.
.
Your dealer has the required
equipment to ensure proper
wheel alignment.
Windshield
For safety, appearance, and the
best viewing, keep the windshield
clean and clear.
.
Signs of damage include
scratches, cracks, and chips.
.
Trained dealer technicians can
inspect the windshield and
recommend proper replacement
if needed.
Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
394 Index Shift Lock Control Function
Check, Automatic
Transmission . . . . . . . . . . . . . . . . . . 285
Shifting
Into Park . . . . . . . . . . . . . . . . . . . . . . 207
Out of Park . . . . . . . . . . . . . . . . . . . 208
Side Blind Zone Alert (SBZA) . . . 246
Signals, Turn and
Lane-Change . . . . . . . . . . . . . . . . . 173
Spare Tire
Compact . . . . . . . . . . . . . . . . . . . . . . 326
Special Application Services . . . . 349
Specifications and
Capacities . . . . . . . . . . . . . . . . . . . . . 358
Speedometer . . . . . . . . . . . . . . . . . . . 123
StabiliTrak
OFF Light . . . . . . . . . . . . . . . . . . . . . 136
Start Assist, Hills . . . . . . . . . . . . . . . 216
Start Vehicle, Remote . . . . . . . . . . . 36
Starter Switch Check . . . . . . . . . . . 285
Starting the Engine . . . . . . . . . . . . . 204
Starting the Vehicle
Messages . . . . . . . . . . . . . . . . . . . . . 156
Steering . . . . . . . . . . . . . . . . . . . . . . . . 194
Heated Wheel . . . . . . . . . . . . . . . . . 111
Wheel Adjustment . . . . . . . . . . . . .110
Wheel Controls . . . . . . . . . . . . . . . . 111
Steering System Messages . . . . . 155 Storage
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Storage Areas
Armrest . . . . . . . . . . . . . . . . . . . . . . . 107
Center Console . . . . . . . . . . . . . . . 107
Convenience Net . . . . . . . . . . . . . 108
Glove Box . . . . . . . . . . . . . . . . . . . . 106
Instrument Panel . . . . . . . . . . . . . 106
Storage Compartments . . . . . . . . . 106
Stuck Vehicle . . . . . . . . . . . . . . . . . . . 198
Summer Tires . . . . . . . . . . . . . . . . . . 301
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . 54
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Sunshade
Rear Window . . . . . . . . . . . . . . . . . . . 54
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 3
System
Forward Collision
Alert (FCA) . . . . . . . . . . . . . . . . . . 237
Infotainment . . . . . . . . . . . . . 177, 374
Night Vision . . . . . . . . . . . . . . . . . . 243
Systems
Driver Assistance . . . . . . . . . . . . . 230
T
Tachometer . . . . . . . . . . . . . . . . . . . . . 124
Text Telephone (TTY) Users . . . . 364
Theft-Deterrent Systems . . . . . . . . . 46 Theft-Deterrent Systems (cont'd)
Immobilizer . . . . . . . . . . . . . . . . . . . . . 46
Thigh Support Adjustment . . . . . . . 61
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . 299
All-Season . . . . . . . . . . . . . . . . . . . . 300
Buying New Tires . . . . . . . . . . . . . 315
Chains . . . . . . . . . . . . . . . . . . . . . . . . 319
Changing . . . . . . . . . . . . . . . . . . . . . 321
Compact Spare . . . . . . . . . . . . . . . 326
Designations . . . . . . . . . . . . . . . . . 303
Different Size . . . . . . . . . . . . . . . . . 316
If a Tire Goes Flat . . . . . . . . . . . . 320
Inspection . . . . . . . . . . . . . . . . . . . . 312
Low Profile . . . . . . . . . . . . . . . . . . . 300
Messages . . . . . . . . . . . . . . . . . . . . 156
Pressure . . . . . . . . . . . . . . . . . . . . . . 308
Pressure Light . . . . . . . . . . . . . . . . 137
Pressure Monitor Operation . . 309
Pressure Monitor System . . . . . 308
Rotation . . . . . . . . . . . . . . . . . . . . . . 313
Sidewall Labeling . . . . . . . . . . . . . 301
Terminology and Definitions . . 304
Uniform Tire Quality
Grading . . . . . . . . . . . . . . . . . . . . . 316
Wheel Alignment and Tire
Balance . . . . . . . . . . . . . . . . . . . . . 318
Wheel Replacement . . . . . . . . . . 318
Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Index 395Tires (cont'd)
When It Is Time for New
Tires . . . . . . . . . . . . . . . . . . . . . . . . 314
Winter . . . . . . . . . . . . . . . . . . . . . . . . 300
Towing
Driving Characteristics . . . . . . . . 255
Equipment . . . . . . . . . . . . . . . . . . . . 259
General Information . . . . . . . . . . 255
Recreational Vehicle . . . . . . . . . . 331
Trailer . . . . . . . . . . . . . . . . . . . . . . . . 258
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 330
Traction
Control System (TCS)/
StabiliTrak ®
Light . . . . . . . . . . . . 137
Off Light . . . . . . . . . . . . . . . . . . . . . . 136
Traction Control/Electronic
Stability Control . . . . . . . . . . . . . . . 217
Trailer
Towing . . . . . . . . . . . . . . . . . . . . . . . . 258
Transmission
Automatic . . . . . . . . . . . . . . . . . . . . . 210
Fluid, Automatic . . . . . . . . . . . . . . 273
Messages . . . . . . . . . . . . . . . . . . . . 156
Transportation Program,
Courtesy . . . . . . . . . . . . . . . . . . . . . . 367
Trip Odometer . . . . . . . . . . . . . . . . . . 124
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Turn and Lane-Change
Signals . . . . . . . . . . . . . . . . . . . . . . . . 173
U Uniform Tire Quality Grading . . . 316
Universal Remote System . . . . . . 166
Operation . . . . . . . . . . . . . . . . . . . . . 168
Programming . . . . . . . . . . . . . . . . . 166
Using This Manual . . . . . . . . . . . . . . . . 2
V Vehicle
Alarm System . . . . . . . . . . . . . . . . . . 44
Canadian Owners . . . . . . . . . . . . . . . 2
Control . . . . . . . . . . . . . . . . . . . . . . . 193
Identification Number (VIN) . . . 357
Load Limits . . . . . . . . . . . . . . . . . . . 198
Messages . . . . . . . . . . . . . . . . . . . . 146
Personalization . . . . . . . . . . . . . . . 157
Reminder Messages . . . . . . . . . . 157
Remote Start . . . . . . . . . . . . . . . . . . . 36
Security . . . . . . . . . . . . . . . . . . . . . . . . 44
Speed Messages . . . . . . . . . . . . . 157
Towing . . . . . . . . . . . . . . . . . . . . . . . . 330
Vehicle Ahead Indicator . . . . . . . . 136
Vehicle Care
Tire Pressure . . . . . . . . . . . . . . . . . 306
Vehicle Data Recording and
Privacy . . . . . . . . . . . . . . . . . . . . . . . . 372 Vehicle Hold
Automatic . . . . . . . . . . . . . . . . . . . . . 217
Ventilation, Air . . . . . . . . . . . . . . . . . . 189
Video Recorder . . . . . . . . . . . . . . . . . 250
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Voltmeter Gauge . . . . . . . . . . . . . . . 129
W Warning
Brake System Light . . . . . . . . . . . 133
Caution and Danger . . . . . . . . . . . . . 2
Lane Departure (LDW) . . . . . . . 248
Warning Lights, Gauges, and
Indicators . . . . . . . . . . . . . . . . . . . . . 117
Warnings
Hazard Flashers . . . . . . . . . . . . . . 173
Washer Fluid . . . . . . . . . . . . . . . . . . . 281
Messages . . . . . . . . . . . . . . . . . . . . 157
Wheels
Alignment and Tire Balance . . 318
Different Size . . . . . . . . . . . . . . . . . 316
Replacement . . . . . . . . . . . . . . . . . 318
When It Is Time for New
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 314
Where to Put the Restraint . . . . . . 94
Windows . . . . . . . . . . . . . . . . . . . . . . . . 51
Messages . . . . . . . . . . . . . . . . . . . . 157
Power . . . . . . . . . . . . . . . . . . . . . . . . . . 52