cooling CADILLAC CTS 2016 3.G User Guide

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-MidEast-9369309) -
2016 - crc - 7/30/15
Vehicle Care 249
Vehicle Care
General Information
General Information . . . . . . . . . . 250
Accessories andModifications . . . . . . . . . . . . . . . . 250
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 251
Hood . . . . . . . . . . . . . . . . . . . . . . . . . 251
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 252
Engine Oil . . . . . . . . . . . . . . . . . . . . 259
Engine Oil Life System . . . . . . . 261
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . 262
Engine Air Cleaner/Filter . . . . . . 263
Cooling System . . . . . . . . . . . . . . 264
Engine Coolant . . . . . . . . . . . . . . . 266
Engine Overheating . . . . . . . . . . 269
Washer Fluid . . . . . . . . . . . . . . . . . 271
Brakes . . . . . . . . . . . . . . . . . . . . . . . 271
Brake Fluid . . . . . . . . . . . . . . . . . . . 272
Battery . . . . . . . . . . . . . . . . . . . . . . . . 273
All-Wheel Drive . . . . . . . . . . . . . . . 274
Starter Switch Check . . . . . . . . . 275
Automatic Transmission Shift Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 276 Park Brake and P (Park)
Mechanism Check . . . . . . . . . . 276
Wiper Blade Replacement . . . . 277
Windshield Replacement . . . . . 277
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . 278
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 278
Halogen Bulbs . . . . . . . . . . . . . . . . 278
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . . . . . . . 278
LED Lighting . . . . . . . . . . . . . . . . . 278
License Plate Lamp . . . . . . . . . . 279
Replacement Bulbs . . . . . . . . . . . 279
Electrical System
Electrical System Overload . . . 280
Fuses and Circuit Breakers . . . 280
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 281
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 284
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 287
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 289
All-Season Tires . . . . . . . . . . . . . . 290
Winter Tires . . . . . . . . . . . . . . . . . . 290
Run-Flat Tires . . . . . . . . . . . . . . . . 291 Low-Profile Tires . . . . . . . . . . . . . 292
Summer Tires . . . . . . . . . . . . . . . . 292
Tire Pressure . . . . . . . . . . . . . . . . . 292
Tire Pressure for High-Speed
Operation . . . . . . . . . . . . . . . . . . . 294
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . . 294
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . 295
Tire Inspection . . . . . . . . . . . . . . . . 298
Tire Rotation . . . . . . . . . . . . . . . . . 299
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 300
Buying New Tires . . . . . . . . . . . . . 301
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . 302
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 303
Wheel Replacement . . . . . . . . . . 303
Tire Chains . . . . . . . . . . . . . . . . . . . 304
If a Tire Goes Flat . . . . . . . . . . . . 304
Tire Sealant and Compressor Kit . . . . . . . . . . . . . 306
Storing the Tire Sealant and Compressor Kit . . . . . . . . . . . . . 312
Jump Starting
Jump Starting . . . . . . . . . . . . . . . . 313
Towing the Vehicle
Towing the Vehicle . . . . . . . . . . . 315

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-MidEast-9369309) -
2016 - crc - 7/30/15
Vehicle Care 253
1. Windshield Washer FluidReservoir. See Washer Fluid
0 271.
2. Remote Positive (+) Battery Terminal. See Jump Starting
0 313.
3. Engine Compartment Fuse
Block 0281.
4. Engine Coolant Surge Tank and Pressure Cap. See
Cooling System 0264.
5. Remote Negative (-) Battery Terminal. See Jump Starting
0 313.
6. Engine Oil Fill Cap. See Engine Oil 0259.
7. Engine Cooling Fan (Out of View). See Cooling System
0 264.
8. Engine Oil Dipstick. See Engine Oil 0259.
9. Engine Air Cleaner/Filter 0263.
10. Brake Fluid Reservoir. See Brake Fluid 0272.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-MidEast-9369309) -
2016 - crc - 7/30/15
Vehicle Care 255
1. Windshield Washer FluidReservoir. See Washer Fluid
0 271.
2. Remote Positive (+) Battery Terminal. See Jump Starting
0 313.
3. Remote Negative (-) Battery Terminal. See Jump Starting
0 313.
4. Engine Coolant Surge Tank and Pressure Cap. See
Cooling System 0264.
5. Engine Compartment Fuse
Block 0281.
6. Engine Cooling Fan (Out of View). See Cooling System
0 264.
7. Engine Oil Fill Cap. See Engine Oil 0259.
8. Engine Oil Dipstick. See Engine Oil 0259.
9. Engine Air Cleaner/Filter 0263.
10. Brake Fluid Reservoir. See Brake Fluid 0272.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-MidEast-9369309) -
2016 - crc - 7/30/15
Vehicle Care 257
1. Windshield Washer FluidReservoir. See Washer Fluid
0 271.
2. Remote Positive (+) Battery Terminal. See Jump Starting
0 313.
3. Engine Compartment Fuse
Block 0281.
4. Engine Coolant Surge Tank and Pressure Cap. See
Cooling System 0264.
5. Remote Negative (-) Battery Terminal. See Jump Starting
0 313.
6. Engine Cooling Fan (Out of View). See Cooling System
0 264.
7. Engine Oil Fill Cap. See Engine Oil 0259.
8. Engine Oil Dipstick. See Engine Oil 0259.
9. Engine Air Cleaner/Filter 0263.
10. Brake Fluid Reservoir. See Brake Fluid 0272.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-MidEast-9369309) -
2016 - crc - 7/30/15
Vehicle Care 259
1. Windshield Washer FluidReservoir. See Washer Fluid
0 271.
2. Remote Positive (+) Battery Terminal. See Jump Starting
0 313.
3. Engine Compartment Fuse
Block 0281.
4. Engine Coolant Surge Tank and Pressure Cap. See
Cooling System 0264.
5. Remote Negative (-) Battery Terminal. See Jump Starting
0 313.
6. Engine Oil Dipstick. See Engine Oil 0259.
7. Engine Cooling Fan (Out of View). See Cooling System
0 264.
8. Engine Oil Fill Cap (Out of View). See Engine Oil0259.
9. Engine Air Cleaner/Filter 0263.
10. Brake Fluid Reservoir. See Brake Fluid 0272.Engine Oil
To ensure proper engine
performance and long life, careful
attention must be paid to engine oil.
Following these simple, but
important steps will help protect
your investment:
.
Use engine oil approved to the
proper specification and of the
proper viscosity grade. See
“Selecting the Right Engine Oil”
in this section.
. Check the engine oil level
regularly and maintain the
proper oil level. See “Checking
Engine Oil” and“When to Add
Engine Oil” in this section.
. Change the engine oil at the
appropriate time. See Engine Oil
Life System 0261.
. Always dispose of engine oil
properly. See “What to Do with
Used Oil” in this section.
Checking Engine Oil
It is a good idea to check the engine
oil level at each fuel fill. In order to
get an accurate reading, the vehicle must be on level ground. The
engine oil dipstick handle is a loop.
See
Engine Compartment Overview
0 252 for the location of the engine
oil dipstick.
1. If the engine has been running recently, turn off the engine and
allow several minutes for the oil
to drain back into the oil pan.
Checking the oil level too soon
after engine shutoff will not
provide an accurate oil level
reading.
{Warning
The engine oil dipstick handle
may be hot; it could burn you.
Use a towel or glove to touch the
dipstick handle.
2. Pull out the dipstick and wipe it with a clean paper towel or
cloth, then push it back in all
the way. Remove it again,
keeping the tip down, and
check the level.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-MidEast-9369309) -
2016 - crc - 7/30/15
264 Vehicle Care
1. Disconnect the lower andupper outlet ducts by loosening
the lower (1) and upper (3) air
duct clamps.
2. Disconnect the lower (2) and upper (4) electrical connectors
and wiring attachments to air
cleaner/filter cover.
3. Remove the screws (5) on top of the air cleaner/filter cover.
4. Lift the air cleaner/filter cover away from the air cleaner/filter
housing.
5. Pull out the air cleaner/filter.
6. Inspect or replace the air cleaner/filter.
7. Reverse Steps 1-5 to reinstall the air cleaner/filter cover.
6.2L V8 LT4 Engine
1. Remove the screws on top of the air cleaner/filter cover.
2. Lift the air cleaner/filter cover away from the air cleaner/filter
housing.
3. Pull out the air cleaner/filter.
4. Inspect or replace the engine air cleaner/filter.
5. Reverse Steps 1-3 to reinstall the air cleaner/filter cover.
{Warning
Operating the engine with the air
cleaner/filter off can cause you or
others to be burned. The air
cleaner not only cleans the air; it
helps to stop flames if the engine
backfires. Use caution when
working on the engine and do not
drive with the air cleaner/filter off.
Caution
If the air cleaner/filter is off, dirt
can easily get into the engine,
which could damage it. Always
have the air cleaner/filter in place
when you are driving.
Cooling System
The cooling system allows the
engine to maintain the correct
working temperature.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-MidEast-9369309) -
2016 - crc - 7/30/15
Vehicle Care 265
2.0L L4 LTG Engine
1. Engine Coolant Surge Tankand Pressure Cap
2. Engine Cooling Fan (Out of View)
3.6L V6 LGX Engine
1. Engine Coolant Surge Tankand Pressure Cap
2. Engine Cooling Fan (Out of View)
3.6L V6 LF3 Engine
1. Engine Coolant Surge Tankand Pressure Cap
2. Engine Cooling Fan (Out of View)

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-MidEast-9369309) -
2016 - crc - 7/30/15
266 Vehicle Care
6.2L V8 LT4 Engine
1. Engine Coolant Surge Tankand Pressure Cap
2. Engine Cooling Fan (Out of View)
{Warning
An electric engine cooling fan
under the hood can start up even
when the engine is not running
and can cause injury. Keep
hands, clothing, and tools away
from any underhood electric fan.
{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.
Engine Coolant
The cooling system in the vehicle is
filled with DEX-COOL engine
coolant. See Maintenance Schedule
0 329 andRecommended Fluids
and Lubricants 0333.
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 0269.
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
(Continued)

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-MidEast-9369309) -
2016 - crc - 7/30/15
Vehicle Care 267
Warning (Continued)
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.
. 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 0333.
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

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-MidEast-9369309) -
2016 - crc - 7/30/15
268 Vehicle Care
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 TankCaution
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 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 you would not get the
overheat warning. The engine
could catch fire and you or others (Continued)
Warning (Continued)
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