2017 CADILLAC ATS COUPE engine overheat

Cadillac ATS/ATS-V Owner Manual (GMNA-Localizing-MidEast-10287885) -
2017 - crc - 6/16/16
VEHICLE CARE 231
Vehicle Care
General Information
General Information . . . . . . . . . . . . . 232
Accessories andModifications . . . . . . . . . . . . . . . . . . . 232
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . . . . . . 233
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . . . . . . 234
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . 241
Engine Oil Life System . . . . . . . . . . . 243
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244
Engine Air Cleaner/Filter . . . . . . . . . 245
Cooling System (Engine) . . . . . . . . . 246
Cooling System (Intercooler) . . . . 248
Engine Coolant . . . . . . . . . . . . . . . . . . . 248
Engine Overheating . . . . . . . . . . . . . . 251
Washer Fluid . . . . . . . . . . . . . . . . . . . . . 253
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . 254
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Starter Switch Check . . . . . . . . . . . . . 256
Automatic Transmission Shift Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257 Park Brake and P (Park)
Mechanism Check . . . . . . . . . . . . . . 257
Wiper Blade Replacement . . . . . . . 257
Windshield Replacement . . . . . . . . 258
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . . . . . 258
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . . . . . 259
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . 259
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . . . . . . . . . . . 259
LED Lighting . . . . . . . . . . . . . . . . . . . . . 259
Back-Up Lamps . . . . . . . . . . . . . . . . . . . 259
License Plate Lamp . . . . . . . . . . . . . . 260
Replacement Bulbs . . . . . . . . . . . . . . . 261
Electrical System
Electrical System Overload . . . . . . 261
Fuses and Circuit Breakers . . . . . . 261
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Instrument Panel Fuse Block . . . . 265
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
All-Season Tires . . . . . . . . . . . . . . . . . . 271
Winter Tires . . . . . . . . . . . . . . . . . . . . . . 271
Run-Flat Tires . . . . . . . . . . . . . . . . . . . . 271 Summer Tires . . . . . . . . . . . . . . . . . . . . 272
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 273
Tire Pressure for High-Speed
Operation . . . . . . . . . . . . . . . . . . . . . . . . 274
Tire Pressure Monitor System . . . 274
Tire Pressure Monitor
Operation . . . . . . . . . . . . . . . . . . . . . . . . 275
Tire Inspection . . . . . . . . . . . . . . . . . . . 278
Tire Rotation . . . . . . . . . . . . . . . . . . . . . 278
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280
Buying New Tires . . . . . . . . . . . . . . . . 280
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . 282
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . . . . . . 282
Wheel Replacement . . . . . . . . . . . . . . 282
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . 284
If a Tire Goes Flat . . . . . . . . . . . . . . . . 284
Tire Sealant and Compressor Kit . . . . . . . . . . . . . . . . . 286
Storing the Tire Sealant and Compressor Kit . . . . . . . . . . . . . . . . . 292
Jump Starting
Jump Starting . . . . . . . . . . . . . . . . . . . . . 292
Towing the Vehicle
Towing the Vehicle . . . . . . . . . . . . . . . 295
Recreational Vehicle Towing . . . . 296

Cadillac ATS/ATS-V Owner Manual (GMNA-Localizing-MidEast-10287885) -
2017 - crc - 6/16/16
248 VEHICLE CARE
{Warning
Heater and radiator hoses, and
other engine parts, can be very hot.
Do not touch them. If you do, you
can be burned.
Do not run the engine if there is a
leak. If you run the engine, it could
lose all coolant. That could cause
an engine fire, and you could be
burned. Get any leak fixed before
you drive the vehicle.
Caution
Using coolant other than
DEX-COOL®can cause premature
engine, heater core, or radiator
corrosion. In addition, the engine
coolant could require changing
sooner. Any repairs would not be
covered by the vehicle warranty.
Always use DEX-COOL (silicate-free)
coolant in the vehicle.
Cooling System
(Intercooler)
Intercooler ATS-V Only
The 3.6L V6 twin turbo engine (LF4)
has an intercooler cooling system.
The intercooler cooling system has a
special procedure for draining and
adding coolant. Because this
procedure is difficult, see the dealer
for service if the intercooler is low on
coolant or a leak is suspected.
Engine Coolant
The cooling system in the vehicle is
filled with DEX-COOL engine coolant.
See Maintenance Schedule 0307 and
Recommended Fluids and
Lubricants 0314.
The following explains the cooling
system and how to check and add
coolant when it is low. If there is a
problem with engine overheating, see
Engine Overheating 0251.
What to Use
{Warning
Adding only plain water or some
other liquid to the cooling system
can be dangerous. Plain water and
other liquids, can boil before the
proper coolant mixture will. The
coolant warning system is set for
the proper coolant mixture. With
plain water or the wrong mixture,
the engine could get too hot but
you would not get the overheat
warning. The engine could catch
fire and you or others could be
burned. Use a 50/50 mixture of
clean, drinkable water and
DEX-COOL coolant.
Use a 50/50 mixture of clean
drinkable water and DEX-COOL
coolant. This mixture:
. Gives freezing protection down to
−37 °C (−34 °F), outside
temperature.

Cadillac ATS/ATS-V Owner Manual (GMNA-Localizing-MidEast-10287885) -
2017 - crc - 6/16/16
VEHICLE CARE 249
.Gives boiling protection up to
129 °C (265 °F), engine
temperature.
. Protects against rust and
corrosion.
. Will not damage aluminum parts.
. Helps keep the proper engine
temperature.
Caution
If improper coolant mixture,
inhibitors, or additives are used in
the vehicle cooling system, the
engine could overheat and be
damaged. Too much water in the
mixture can freeze and crack engine
cooling parts. The repairs would not
be covered by the vehicle warranty.
Use only the proper mixture of
engine coolant for the cooling
system. See Recommended Fluids
and Lubricants 0314.
Never dispose of engine coolant by
putting it in the trash, pouring it on
the ground, or into sewers, streams,
or bodies of water. Have the coolant changed by an authorized service
center, familiar with legal
requirements regarding used coolant
disposal. This will help protect the
environment and your health.
Checking Coolant
The vehicle must be on a level surface
when checking the coolant level.
It is normal to see coolant moving in
the upper coolant hose return line
when the engine is running. It is also
normal to see bubbles entering the
surge tank through the small hose.
Check to see if coolant is visible in the
coolant surge tank. If the coolant
inside the coolant surge tank is
boiling, do not do anything else until
it cools down.
If coolant is visible but the coolant
level is not at or above the COLD FILL
line, add a 50/50 mixture of clean
drinkable water and DEX-COOL
coolant.
Be sure the cooling system is cool
before this is done.
It is normal for the coolant level in
the bottom chamber to rise and fall
with operating temperature and
ambient conditions. Coolant will
evaporate from the bottom chamber
in normal operation. This will happen
faster when the vehicle is driven for
long periods in hot, dry conditions.
If no coolant is visible in the coolant
surge tank, add coolant as follows:
How to Add Coolant to the
Coolant Surge Tank
Caution
This vehicle has a specific coolant
fill procedure. Failure to follow this
procedure could cause the engine to
overheat and be severely damaged.
If no problem is found, check to see if
coolant is visible in the coolant surge
tank. If coolant is visible but the
coolant level is not at the bottom of
the fill neck, add a 50/50 mixture of
clean, drinkable water and DEX-COOL
coolant at the coolant surge tank, but

Cadillac ATS/ATS-V Owner Manual (GMNA-Localizing-MidEast-10287885) -
2017 - crc - 6/16/16
250 VEHICLE CARE
be sure the cooling system, including
the coolant surge tank pressure cap, is
cool before you do it.
{Warning
Steam and scalding liquids from a
hot cooling system can blow out
and burn you badly. Never turn the
cap when the cooling system,
including the surge tank pressure
cap, is hot. Wait for the cooling
system and surge tank pressure cap
to cool.
{Warning
Adding only plain water or some
other liquid to the cooling system
can be dangerous. Plain water and
other liquids, can boil before the
proper coolant mixture will. The
coolant warning system is set for
the proper coolant mixture. With
plain water or the wrong mixture,
the engine could get too hot but(Continued)
Warning (Continued)
you would not get the overheat
warning. The engine could catch
fire and you or others could be
burned. Use a 50/50 mixture of
clean, drinkable water and
DEX-COOL coolant.
Caution
In cold weather, water can freeze
and crack the engine, radiator,
heater core, and other parts. Use
the recommended coolant and the
proper coolant mixture.
{Warning
You can be burned if you spill
coolant on hot engine parts.
Coolant contains ethylene glycol
and it will burn if the engine parts
are hot enough. Do not spill coolant
on a hot engine. 1. Remove the coolant surge tank
pressure cap from the top
chamber when the cooling
system, including the coolant
surge tank pressure cap and
upper radiator hose, is no
longer hot.
Turn the pressure cap slowly
counterclockwise. If you hear a
hiss, wait for that to stop. This
will allow any pressure still left
to be vented out the
discharge hose.
2. Keep turning the pressure cap slowly and remove it. Open the
surge tank service port cap to
the lower chamber

Cadillac ATS/ATS-V Owner Manual (GMNA-Localizing-MidEast-10287885) -
2017 - crc - 6/16/16
VEHICLE CARE 251
3. Fill the surge tank top chamberwith the proper DEX-COOL
coolant mixture to the bottom of
the fill neck. The top chamber
needs to be completely full. Fill
the surge tank bottom chamber
through the service port to
approximately half.
4. With the coolant surge tank pressure cap off and the surge
tank service port cap open, start
the engine and let it run until
you can feel the upper radiator
hose getting hot. Watch out for
the engine cooling fan. By this time, the coolant level
inside the coolant surge tank top
chamber may be lower. If the
level is lower, add more of the
proper DEX-COOL coolant
mixture to the surge tank top
chamber until the level reaches
the bottom of the fill neck.
5. Replace the surge tank pressure cap tightly and close the surge
tank service port cap.Caution
If the pressure cap is not tightly
installed, coolant loss and possible
engine damage may occur. Be sure
the cap is properly and tightly
secured.
Check the level in the surge tank top
and bottom chambers when the
cooling system has cooled down.
If the coolant is not at the proper
levels, repeat Steps 1-3 and reinstall
the pressure cap and close the service
port. If the coolant still is not at the
proper levels when the system cools
down again, see your dealer.
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 0111 and
Engine Coolant Temperature Warning
Light 0119. The vehicle may also
display a message on the Driver
Information Center (DIC). See Engine
Cooling System Messages 0129.
If the decision is made not to lift the
hood when this warning appears, get
service help right away.
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.

Cadillac ATS/ATS-V Owner Manual (GMNA-Localizing-MidEast-10287885) -
2017 - crc - 6/16/16
252 VEHICLE CARE
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
{Warning
Steam 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 Steam Is Coming from the
Engine Compartment with No
Overheat Warning
(V-Series Only)
The V-Series hood vent is functional,
and will allow water from rain and car
washes to enter the engine
compartment and contact hot
surfaces. If steam is seen coming from
the hood vent with no accompanying
overheat warning, no action is
required.
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 too
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.

Cadillac ATS/ATS-V Owner Manual (GMNA-Localizing-MidEast-10287885) -
2017 - crc - 6/16/16
INDEX 327
Coolant (cont'd)Engine Temperature Warning
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Cooling . . . . . . . . . . . . . . . . . . . . . . . . .160, 163
Cooling System . . . . . . . . . . . . . . . .246, 248
Engine Messages . . . . . . . . . . . . . . . . . . 129
Courtesy Lamps . . . . . . . . . . . . . . . . . . . . . 150
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . 204 Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Cruise Control, Adaptive . . . . . . . . . . . 207
Cupholders . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
D
Danger, Warning, and Caution . . . . . . . . 2
Data Collection Infotainment System . . . . . . . . . . . . . 324
Data Recorder Performance . . . . . . . . . . . . . . . . . . . . . . . 153
Data Recorders, Event . . . . . . . . . . . . . . 323
Daytime Running Lamps (DRL) . . . 147
Defensive Driving . . . . . . . . . . . . . . . . . . . 171
Delayed Locking . . . . . . . . . . . . . . . . . . . . . 36
Distracted Driving . . . . . . . . . . . . . . . . . . 171
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . 150
Door Ajar Messages . . . . . . . . . . . . . . . . . . . . . 129
Delayed Locking . . . . . . . . . . . . . . . . . . . . 36
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Door (cont'd)
Power Locks . . . . . . . . . . . . . . . . . . . . . . . . . 36
Rear Seat Pass-Through . . . . . . . . . . . . 61
Drive Belt Routing, Engine . . . . . . . . . 322
Driver Assistance Systems . . . . . . . . . 214
Driver Information
Center (DIC) . . . . . . . . . . . . . . . . . . . . . . . 122
Driver Mode Control . . . . . . . . . . . . . . . . 199
Driving Assistance Systems . . . . . . . . . . . . . . . 218
Competitive . . . . . . . . . . . . . . . . . . . . . . . 201
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . 171
For Better Fuel Economy . . . . . . . . . . . 26
Hill and Mountain Roads . . . . . . . . 178
If the Vehicle is Stuck . . . . . . . . . . . . 180
Loss of Control . . . . . . . . . . . . . . . . . . . . 173
Off-Road Recovery . . . . . . . . . . . . . . . . 173
Track Events and Competitive . . . 174
Vehicle Load Limits . . . . . . . . . . . . . . 181
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . 178
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Dual Automatic Climate Control System . . . . . . . . . . . . . . .160, 163
E
Easy Entry Seat . . . . . . . . . . . . . . . . . . . . . . 51
Electrical Equipment, Add-On . . . . . 230 Electrical System
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Fuses and Circuit Breakers . . . . . . . 261
Instrument Panel Fuse Block . . . . 265
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . 245
Check and Service EngineSoon Light . . . . . . . . . . . . . . . . . . . . . . . 114
Compartment Overview . . . . . . . . . . 234
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Coolant Temperature Gauge . . . . . 111
Coolant Temperature Warning Light . . . . . . . . . . . . . . . . . . . 119
Cooling System . . . . . . . . . . . . . . 246, 248
Cooling System Messages . . . . . . . . 129
Drive Belt Routing . . . . . . . . . . . . . . . . 322
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Oil Life System . . . . . . . . . . . . . . . . . . . . 243
Oil Messages . . . . . . . . . . . . . . . . . . . . . . 130
Oil Pressure Light . . . . . . . . . . . . . . . . . 120
Overheating . . . . . . . . . . . . . . . . . . . . . . . 251
Power Messages . . . . . . . . . . . . . . . . . . 130
Running While Parked . . . . . . . . . . . 191
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186

Cadillac ATS/ATS-V Owner Manual (GMNA-Localizing-MidEast-10287885) -
2017 - crc - 6/16/16
INDEX 331
OilEngine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Engine Oil Life System . . . . . . . . . . . 243
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Pressure Light . . . . . . . . . . . . . . . . . . . . . 120
Older Children, Restraints . . . . . . . . . . . 79
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Overheating, Engine . . . . . . . . . . . . . . . . 251
P
Park Shifting Into . . . . . . . . . . . . . . . . . . . . . . 188
Shifting Out of . . . . . . . . . . . . . . . . . . . . 189
Parking Brake . . . . . . . . . . . . . . . . . . . . . . . . . 195, 196
Brake and P (Park)Mechanism Check . . . . . . . . . . . . . . . 257
Extended . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Over Things That Burn . . . . . . . . . . . 190
Parking Assist . . . . . . . . . . . . . . . . . . . . . . . 215
Parking Brake
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Parking or Backing Assistance Systems . . . . . . . . . . . . . . . 215
Passenger Airbag Status
Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Passenger Compartment Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169 Passenger Sensing System . . . . . . . . . . 73
Performance Data
Recorder (PDR) . . . . . . . . . . . . . . . . . . . . 153
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Power Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Protection, Battery . . . . . . . . . . . . . . . . 151
Retained Accessory (RAP) . . . . . . . . 188
Seat Adjustment . . . . . . . . . . . . . . . . . . . . 52
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Pregnancy, Using Safety Belts . . . . . . 66
Privacy Vehicle Data Recording . . . . . . . . . . 323
R
Reading Lamps . . . . . . . . . . . . . . . . . . . . . 150
Rear AxleLimited-Slip . . . . . . . . . . . . . . . . . . . . . . . 204
Rear Seat Pass-Through Door . . . . . . . 61
Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Rear Vision Camera (RVC) . . . . . . . . . 215
Rearview Mirrors Automatic Dimming . . . . . . . . . . . . . . . . 45
Reclining Seatbacks . . . . . . . . . . . . . . . . . 55
Recommended Fluids and Lubricants . . . . . . . . . . . . . . . . . . . . . . . . . 314 Records
Maintenance . . . . . . . . . . . . . . . . . . . . . . 317
Recreational Vehicle Towing . . . . . . . 296
Remote Keyless Entry (RKE) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Remote Vehicle Start . . . . . . . . . . . . . . . . 33
Replacement Bulbs . . . . . . . . . . . . . . . . . 261
Replacement Parts Airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Maintenance . . . . . . . . . . . . . . . . . . . . . . 315
Replacing Airbag System . . . . . . . . . . . . 78
Replacing LATCH System Parts
after a Crash . . . . . . . . . . . . . . . . . . . . . . . . 91
Replacing Safety Belt System Parts after a Crash . . . . . . . . . . . . . . . . . 67
Restraints
Where to Put . . . . . . . . . . . . . . . . . . . . . . . . 84
Retained Accessory Power (RAP) . . . . . . . . . . . . . . . . . . . . . . . 188
Reverse Tilt Mirrors . . . . . . . . . . . . . . . . . 44
Ride Control Systems Limited Slip Rear Axle . . . . . . . . . . . 204
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Roads Driving, Wet . . . . . . . . . . . . . . . . . . . . . . . 178
Roof Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Rotation, Tires . . . . . . . . . . . . . . . . . . . . . . 278