2016 CADILLAC CT6 check engine light
[x] Cancel search: check engine lightPage 281 of 397
Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
280 Vehicle Care 5. Replace the pressure cap
tightly.
6. Verify coolant level after the
engine is shut off and the
coolant is cold. If necessary,
repeat coolant fill procedure
Steps 1 – 6.
If the coolant still is not at the
proper level when the system
cools down again, see your
dealer.
CautionIf the pressure cap is not tightly
installed, coolant loss and
possible engine damage may
occur. Be sure the cap is properly
and tightly secured.
Engine Overheating The vehicle has several indicators
to warn of the engine overheating.
There is an engine coolant
temperature gauge and an engine
coolant temperature warning light on the instrument cluster. See Engine
Coolant Temperature Gauge 0 128
and Engine Coolant Temperature
Warning Light 0 137 . The vehicle
may also display a message on the
Driver Information Center (DIC).
See Engine Cooling System
Messages 0 149 .
If the decision is made not to lift the
hood when this warning appears,
get service help right away. See
Roadside Service 0 364 .
If the decision is made to lift the
hood, make sure the vehicle is
parked on a level surface. Then
check to see if the engine cooling
fan is running. If the engine is
overheating, the fan should be
running. If it is not, do not continue
to run the engine. Have the vehicle
serviced.
Caution
Running the engine without
coolant may cause damage or a
fire. Vehicle damage would not be
covered by the vehicle warranty. If Steam Is Coming from the
Engine Compartment
{ WarningSteam from an overheated engine
can burn you badly, even if you
just open the hood. Stay away
from the engine if you see or hear
steam coming from it. Just turn it
off and get everyone away from
the vehicle until it cools down.
Wait until there is no sign of
steam or coolant before you open
the hood.
If you keep driving when the
engine is overheated, the liquids
in it can catch fire. You or others
could be badly burned. Stop the
engine if it overheats, and get out
of the vehicle until the engine
is cool.
If No Steam Is Coming from
the Engine Compartment
If an engine overheat warning is
displayed but no steam can be seen
or heard, the problem may not be
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Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
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Vehicle Care 281too serious. Sometimes the engine
can get a little too hot when the
vehicle:
.
Climbs a long hill on a hot day.
.
Stops after high-speed driving.
.
Idles for long periods in traffic.
If the overheat warning is displayed
with no sign of steam:
1. Turn the air conditioning off.
2. Turn the heater on to the
highest temperature and to the
highest fan speed. Open the
windows as necessary.
3. When it is safe to do so, pull off
the road, shift to P (Park) or
N (Neutral), and let the
engine idle.
If the engine coolant temperature
gauge is no longer in the
overheated area or the engine
coolant temperature warning light no
longer displays, the vehicle can be
driven. Continue to drive the vehicle
slowly for about 10 minutes. Keep a
safe distance from the vehicle in
front. If the warning does not come back on, continue to drive normally
and have the cooling system
checked for proper fill and function.
If the warning continues, pull over,
stop, and park the vehicle
right away.
If there is no sign of steam, idle the
engine for three minutes while
parked. If the warning is still
displayed, turn off the engine until it
cools down.
Washer Fluid What to Use When windshield washer fluid is
needed, be sure to read the
manufacturer's instructions before
use. If operating the vehicle in an
area where the temperature may fall
below freezing, use a fluid that has
sufficient protection against
freezing. Adding Washer Fluid
Open the cap with the washer
symbol on it. Add washer fluid until
the tank is full. See Engine
Compartment Overview 0 265 for
reservoir location.
Caution .
Do not use washer fluid that
contains any type of water
repellent coating. This can
cause the wiper blades to
chatter or skip.
.
Do not use engine coolant
(antifreeze) in the
windshield washer. It can
damage the windshield
washer system and paint.
(Continued)
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Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Vehicle Care 283
Brake Fluid The brake master cylinder reservoir
is filled with GM approved DOT 3
brake fluid as indicated on the
reservoir cap. See Engine
Compartment Overview 0 265 for
the location of the reservoir.
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 0 133 .
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 0 344 .
What to Add
Use only GM approved DOT 3
brake fluid from a clean, sealed
container. See Recommended
Fluids and Lubricants 0 353 .
{ 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.
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Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
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350 Service and Maintenance
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 0 353 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.
Hoses
Hoses transport fluids and should
be regularly inspected to ensure
that there are no cracks or leaks.
With a multi-point inspection, your
dealer can inspect the hoses and
advise if replacement is needed.
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Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
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Index 385
Index A Accessories and
Modifications . . . . . . . . . . . . . . . . . . 262
Accessory Power . . . . . . . . . . . . . . . 206
Adaptive Cruise Control . . . . . . . . 223
Add-On Electrical Equipment . . . 260
Additional Information
OnStar ®
. . . . . . . . . . . . . . . . . . . . . . 379
Additional Maintenance
and Care . . . . . . . . . . . . . . . . . . . . . . 350
Adjustments
Lumbar, Front Seats . . . . . . . . . . . . 60
Lumbar, Rear Seats . . . . . . . . . . . . 68
Thigh Support . . . . . . . . . . . . . . . . . . 61
Air Cleaner/Filter, Engine . . . . . . . 273
Air Conditioning . . . . . . . . . . . 178, 185
Air Filter, Passenger
Compartment . . . . . . . . . . . . . . . . . 190
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 189
Airbag System
Check . . . . . . . . . . . . . . . . . . . . . . . . . . 87
How Does an Airbag
Restrain? . . . . . . . . . . . . . . . . . . . . . 80
Passenger Sensing System . . . . 82
What Makes an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 80
What Will You See after an
Airbag Inflates? . . . . . . . . . . . . . . . 81 Airbag System (cont'd)
When Should an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 79
Where Are the Airbags? . . . . . . . . 78
Airbags
Adding Equipment to the
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . 86
Passenger Status Indicator . . . 130
Readiness Light . . . . . . . . . . . . . . 130
Servicing Airbag-Equipped
Vehicles . . . . . . . . . . . . . . . . . . . . . . . 86
System Check . . . . . . . . . . . . . . . . . . 76
Alarm
Vehicle Security . . . . . . . . . . . . . . . . 44
Alert
Lane Change . . . . . . . . . . . . . . . . . 246
Side Blind Zone (SBZA) . . . . . . 246
All-Season Tires . . . . . . . . . . . . . . . . 300
All-Wheel Drive . . . . . . . . . . . . 213, 284
Antilock Brake System (ABS) . . . 214
Warning Light . . . . . . . . . . . . . . . . . 135
Appearance Care
Exterior . . . . . . . . . . . . . . . . . . . . . . . 333
Interior . . . . . . . . . . . . . . . . . . . . . . . . 338
Armrest
Rear Seat . . . . . . . . . . . . . . . . . . . . . . 68
Armrest Storage . . . . . . . . . . . . . . . . 107
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386 Index Assistance Systems for
Driving . . . . . . . . . . . . . . . . . . . . . . . . 237
Assistance Systems for
Parking and Backing . . . . . . . . . . 231
Auto Stop Mode . . . . . . . . . . . . . . . . 139
Automatic
Climate Control
System . . . . . . . . . . . . . . . . . 178, 185
Door Locks . . . . . . . . . . . . . . . . . . . . . 39
Headlamp System . . . . . . . . . . . . 172
Transmission . . . . . . . . . . . . . . . . . 210
Transmission Fluid . . . . . . . . . . . 273
Automatic Transmission
Manual Mode . . . . . . . . . . . . . . . . . 212
Shift Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 285
Automatic Vehicle
Hold (AVH) . . . . . . . . . . . . . . . . . . . . 217
B Battery
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . 176
Power Protection . . . . . . . . . . . . . 176
Voltage and Charging
Messages . . . . . . . . . . . . . . . . . . . 147
Battery - North America . . . . 284, 327
Blade Replacement, Wiper . . . . . 286
Boost Gauge . . . . . . . . . . . . . . . . . . . 125 Brake
Parking, Electric . . . . . . . . . . . . . . 214
System Warning Light . . . . . . . . 133
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . 282
Antilock . . . . . . . . . . . . . . . . . . . . . . . 214
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 216
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 283
System Messages . . . . . . . . . . . . 147
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 193
Braking System
Front Pedestrian (FPB) . . . . . . . 241
Break-In, New Vehicle . . . . . . . . . . 202
Bulb Replacement . . . . . . . . . . . . . . 289
Headlamp Aiming . . . . . . . . . . . . . 287
Headlamps . . . . . . . . . . . . . . . . . . . 288
License Plate Lamps . . . . . . . . . 288
Buying New Tires . . . . . . . . . . . . . . . 315
C Cadillac Premium Care
Maintenance . . . . . . . . . . . . . . . . . . 344
Calibration . . . . . . . . . . . . . . . . . . . . . . 113
California
Fuel Requirements . . . . . . . . . . . 253
Perchlorate Materials
Requirements . . . . . . . . . . . . . . . 262
California
Proposition
65 Warning . . . . . . . . . .262, 284, 327 Canadian Vehicle Owners . . . . . . . . 2
Capacities and
Specifications . . . . . . . . . . . . . . . . . 358
Carbon Monoxide
Engine Exhaust . . . . . . . . . . . . . . . 209
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Winter Driving . . . . . . . . . . . . . . . . 197
Cargo
Tie-Downs . . . . . . . . . . . . . . . . . . . . 108
Caution, Danger, and Warning . . . . 2
Center Console Storage . . . . . . . . 107
Chains, Tire . . . . . . . . . . . . . . . . . . . . 319
Charging
Wireless . . . . . . . . . . . . . . . . . . . . . . .115
Charging System Light . . . . . . . . . 131
Check
Malfunction Indicator
Engine Light . . . . . . . . . . . . . . . . 132
Child Restraints
Infants and Young Children . . . . . 90
Lower Anchors and Tethers
for Children . . . . . . . . . . . . . . . . . . . 95
Older Children . . . . . . . . . . . . . . . . . . 88
Securing . . . . . . . . . . . . . . . . . 101, 103
Systems . . . . . . . . . . . . . . . . . . . . . . . . 92
Circuit Breakers . . . . . . . . . . . . . . . . 290
Cleaning
Exterior Care . . . . . . . . . . . . . . . . . 333
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388 Index E Electric Parking Brake . . . . . . . . . . 214
Electric Parking Brake Light . . . . 134
Electrical Equipment,
Add-On . . . . . . . . . . . . . . . . . . . . . . . 260
Electrical System
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 290
Fuses and Circuit Breakers . . . 290
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 293
Overload . . . . . . . . . . . . . . . . . . . . . 289
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 295
Emergency
OnStar ®
. . . . . . . . . . . . . . . . . . . . . . 376
Engine
Air Cleaner/Filter . . . . . . . . . . . . . 273
Check and Service Engine
Soon Light . . . . . . . . . . . . . . . . . . 132
Compartment Overview . . . . . . . 265
Coolant . . . . . . . . . . . . . . . . . . . . . . . 277
Coolant Heater . . . . . . . . . . . . . . . 206
Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 128 Engine (cont'd)
Coolant Temperature
Warning Light . . . . . . . . . . . . . . . 137
Cooling System . . . . . . . . . . . . . . . 275
Cooling System Messages . . . 149
Drive Belt Routing . . . . . . . . . . . . 360
Exhaust . . . . . . . . . . . . . . . . . . . . . . 209
Oil Life System . . . . . . . . . . . . . . . 272
Oil Messages . . . . . . . . . . . . . . . . . 149
Oil Pressure Gauge . . . . . . . . . . 126
Oil Pressure Light . . . . . . . . . . . . 138
Overheating . . . . . . . . . . . . . . . . . . 280
Power Messages . . . . . . . . . . . . . 150
Running While Parked . . . . . . . . 210
Starting . . . . . . . . . . . . . . . . . . . . . . . 204
Engine Oil
Temperature Gauge . . . . . . . . . . 127
Entry Lighting . . . . . . . . . . . . . . . . . . . 175
Equipment, Towing . . . . . . . . . . . . . 259
Event Data Recorders . . . . . . . . . . 373
Exit Lighting . . . . . . . . . . . . . . . . . . . . 176
Extender, Safety Belt . . . . . . . . . . . . 75
Exterior Lamp Controls . . . . . . . . . 170
Exterior Lamps Off Reminder . . . 172
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . . . 176 F Features
Memory . . . . . . . . . . . . . . . . . . . . . . . . . 12
Filter,
Engine Air Cleaner . . . . . . . . . . . 273
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 172
Flashers, Hazard Warning . . . . . . 173
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 320
Changing . . . . . . . . . . . . . . . . . . . . . 321
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 341
Fluid
Automatic Transmission . . . . . . 273
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 283
Washer . . . . . . . . . . . . . . . . . . . . . . . 281
Forward Collision Alert
(FCA) System . . . . . . . . . . . . . . . . . 237
Frequency Statement
Radio . . . . . . . . . . . . . . . . . . . . . . . . . 371
Front Automatic Braking
(FAB) System . . . . . . . . . . . . . . . . . 240
Front Pedestrian Braking
(FPB) System . . . . . . . . . . . . . . . . . 241
Front Seats
Heated and Ventilated . . . . . . . . . . 64
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Additives . . . . . . . . . . . . . . . . . . . . . 253
Economy Driving . . . . . . . . . . . . . . . 27
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Index 393Replacing LATCH System
Parts after a Crash . . . . . . . . . . . . 100
Replacing Safety Belt System
Parts after a Crash . . . . . . . . . . . . . 75
Reporting Safety Defects
Canadian Government . . . . . . . . 372
General Motors . . . . . . . . . . . . . . . 372
U.S. Government . . . . . . . . . . . . . 371
Restraints
Where to Put . . . . . . . . . . . . . . . . . . . 94
Retained Accessory
Power (RAP) . . . . . . . . . . . . . . . . . . 206
Reverse Tilt Mirrors . . . . . . . . . . . . . . 49
Ride Control Systems
Messages . . . . . . . . . . . . . . . . . . . . 154
Roads
Driving, Wet . . . . . . . . . . . . . . . . . . 195
Roadside Service . . . . . . . . . . . . . . . 364
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . 55
Rotation, Tires . . . . . . . . . . . . . . . . . . 313
Routing, Engine Drive Belt . . . . . . 360
Running the Vehicle While
Parked . . . . . . . . . . . . . . . . . . . . . . . . 210 S Safety Belts . . . . . . . . . . . . . . . . . . . . . 70
Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Extender . . . . . . . . . . . . . . . . . . . . . . . . 75
How to Wear Safety Belts
Properly . . . . . . . . . . . . . . . . . . . . . . . 71
Lap-Shoulder Belt . . . . . . . . . . . . . . 72
Messages . . . . . . . . . . . . . . . . . . . . 154
Reminders . . . . . . . . . . . . . . . . . . . . 129
Replacing after a Crash . . . . . . . . 75
Use During Pregnancy . . . . . . . . . . 74
Safety Defects Reporting
Canadian Government . . . . . . . . 372
General Motors . . . . . . . . . . . . . . . 372
U.S. Government . . . . . . . . . . . . . 371
Safety Locks . . . . . . . . . . . . . . . . . . . . . 40
Safety System Check . . . . . . . . . . . . 75
Scheduling Appointments . . . . . . . 367
Seats
Head Restraints . . . . . . . . . . . . . . . . 58
Heated and Ventilated Front . . . . 64
Heated and Ventilated, Rear . . . . 69
Lumbar Adjustment, Front . . . . . . 60
Lumbar Adjustment, Rear . . . . . . 68
Memory . . . . . . . . . . . . . . . . . . . . . . . . . 63
Power Adjustment, Front . . . . . . . 60
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Reclining Seatbacks . . . . . . . . . . . . 62 Securing Child
Restraints . . . . . . . . . . . . . . . . 101, 103
Security
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Messages . . . . . . . . . . . . . . . . . . . . 155
OnStar ®
. . . . . . . . . . . . . . . . . . . . . . 376
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 44
Vehicle Alarm . . . . . . . . . . . . . . . . . . . 44
Service . . . . . . . . . . . . . . . . . . . . . . . . . 190
Accessories and
Modifications . . . . . . . . . . . . . . . . 262
Doing Your Own Work . . . . . . . . 263
Engine Soon Light . . . . . . . . . . . . 132
Maintenance Records . . . . . . . . 356
Maintenance, General
Information . . . . . . . . . . . . . . . . . . 342
Parts Identification Label . . . . . 357
Publications Ordering
Information . . . . . . . . . . . . . . . . . . 370
Scheduling Appointments . . . . . 367
Vehicle Messages . . . . . . . . . . . . 155
Service Electric Parking
Brake Light . . . . . . . . . . . . . . . . . . . . 134
Services
Special Application . . . . . . . . . . . 349
Servicing the Airbag . . . . . . . . . . . . . 86