
Cadillac ATS/ATS-V Owner Manual (GMNA-Localizing-MidEast-9369639) -
2016 - crc - 12/9/15
Vehicle Care 261
{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 LF4 V6 engine 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
0 323 andRecommended Fluids
and Lubricants 0327.
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 0264.
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-9369639) -
2016 - crc - 12/9/15
262 Vehicle Care
.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 0327.
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

Cadillac ATS/ATS-V Owner Manual (GMNA-Localizing-MidEast-9369639) -
2016 - crc - 12/9/15
Vehicle Care 263
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(Continued)
Warning (Continued)
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.
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-9369639) -
2016 - crc - 12/9/15
Vehicle Care 277
Number Usage1 –
2 –
3 Passenger motorized
safety belt
4 –
5 –
6 Driver power seat
7 –
8 Headlamp washer relay
9 –
10 –
11 –
12 –
13 Passenger power seat
14 –
15 Passive entry/ Passive start
16 –
17 Headlamp washer Number Usage
18 –
19 ABS pump
20 ABS valve
21 –
22 Driver motorized safety belt
23 Wiper control relay
24 Wiper speed relay
25 Engine control module relay
26 –
27 –/Heated seat 2
28 –/Reverse lockout
29 AFS AHL/ Pedestrian
protection
30 –
31 Passenger window switch
32 –
33 Sunroof
34 Front wiper Number Usage
35 Steering column lock
36 Rear electrical center/Ignition
37 –/MIL/Ignition
38 –/PT fuse
39 O2 sensor
40 Ignition coils/ Injectors
41 Ignition coils/ Injectors/–
42 Engine control module
43 –
44 –
45 Washer
46 –
47 Front washer relay
48 Instrument panel body/Ignition
49 Fuel system control module/Ignition

Cadillac ATS/ATS-V Owner Manual (GMNA-Localizing-MidEast-9369639) -
2016 - crc - 12/9/15
Service and Maintenance 323
At your dealer, you can be certain
that you will receive the highest
level of service available. Your
dealer has specially trained service
technicians, uses genuine
replacement parts, as well as,
up-to-date tools and equipment to
ensure fast and accurate
diagnostics.
The proper replacement parts,
fluids, and lubricants to use are
listed inRecommended Fluids and
Lubricants 0327 andMaintenance
Replacement Parts 0328. We
recommend the use of genuine
parts from your dealer.
Rotation of New Tires
Tire rotation is not recommended if
the vehicle has different size tires
on the front and rear wheels. If tire
rotation is recommended for the
vehicle, to maintain ride, handling,
and performance of the vehicle, it is
important that the first rotation
service for new tires be performed.
Tires should be rotated every
service. See Tire Rotation 0292.Maintenance
Schedule
When the Change Engine Oil
Soon Message Displays
Change engine oil and filter. See
Engine Oil 0254. An Emission
Control Service.
When the CHANGE ENGINE OIL
SOON message displays, service is
required for the vehicle as soon as
possible, within the next 1 000 km/
600 miles. If driving under the best
conditions, the engine oil life system
may not indicate the need for
vehicle service for up to a year. The
engine oil and filter must be
changed at least once a year and
the oil life system must be reset.
Your dealer has trained service
technicians who will perform this
work and reset the system. If the
engine oil life system is reset
accidentally, service the vehicle
within 5 000 km/3,000 miles since
the last service. Reset the oil life
system whenever the oil is changed.
See Engine Oil Life System 0256.
Every Engine Oil Change
.
Change engine oil and filter.
Reset oil life system. See
Engine Oil 0254 and Engine Oil
Life System 0256. An Emission
Control Service.
. Engine coolant level check. See
Engine Coolant 0261.
. Engine cooling system
inspection. Visual inspection of
hoses, pipes, fittings, and
clamps and replacement,
if needed.
. Windshield washer fluid level
check. See Washer Fluid 0266.
. Windshield wiper blade
inspection for wear, cracking,
or contamination and windshield
and wiper blade cleaning,
if contaminated. See Exterior
Care 0313. Worn or damaged
wiper blade replacement. See
Wiper Blade
Replacement 0271.
. Tire inflation pressures check.
See Tire Pressure 0286.

Cadillac ATS/ATS-V Owner Manual (GMNA-Localizing-MidEast-9369639) -
2016 - crc - 12/9/15
324 Service and Maintenance
.Tire wear inspection. See Tire
Inspection 0292.
. Rotate tires if necessary. See
Tire Rotation 0292.
. Fluids visual leak check (or
every 12 months, whichever
occurs first). A leak in any
system must be repaired and the
fluid level checked.
. Engine air cleaner filter
inspection. See Engine Air
Cleaner/Filter 0258.
. Brake system inspection (or
every 12 months, whichever
occurs first). See Exterior
Care 0313.
. Steering and suspension
inspection. Visual inspection for
damaged, loose, or missing
parts or signs of wear.
. Body hinges and latches, key
lock cylinders, folding seat
hardware, and sunroof (if
equipped) lubrication. See
Recommended Fluids and
Lubricants 0327. More frequent
lubrication may be required
when the vehicle is exposed to a corrosive environment. Applying
silicone grease on weatherstrips
with a clean cloth makes them
last longer, seal better, and not
stick or squeak.
. Restraint system component
check. See Safety System
Check 069.
. Fuel system inspection for
damage or leaks.
. Exhaust system and nearby heat
shields inspection for loose or
damaged components.
Additional Required Services
Every Service
.Rotate tires. Tires should be
rotated every service. See Tire
Rotation 0292.
At Each Fuel Stop
. Engine oil level check. See
Engine Oil 0254.
. Engine coolant level check. See
Engine Coolant 0261.
. Windshield washer fluid level
check. See Washer Fluid 0266. Once a Month
.
Tire inflation check. See Tire
Pressure 0286.
. Tire wear inspection. See Tire
Inspection 0292.
. Sunroof track and seal
inspection, if equipped. See
Sunroof 048.
Once a Year
. See Starter Switch Check 0270.
. See Automatic Transmission
Shift Lock Control Function
Check 0270.
. See Park Brake and P (Park)
Mechanism Check 0270.
. Accelerator pedal check for
damage, high effort, or binding.
Replace if needed.
. Underbody flushing service.
. Hood/Trunk Support Gas Strut
Service: Visually inspect gas
strut, if equipped, for signs of
wear, cracks, or other damage.
Check the hold open ability of
the gas strut. Contact your
dealer if service is required.

Cadillac ATS/ATS-V Owner Manual (GMNA-Localizing-MidEast-9369639) -
2016 - crc - 12/9/15
Service and Maintenance 325
.Engine air cleaner filter
replacement or every 20 000 km/
12,500 Miles. See Engine Air
Cleaner/Filter 0258. If driving in
dusty conditions, inspect the
filter at each oil change or more
often as needed.
Every 40 000 km/25,000 Miles
. Passenger compartment air filter
replacement (or every
24 months, whichever occurs
first). More frequent replacement
may be needed if you drive in
areas with heavy traffic, areas
with poor air quality, or areas
with high dust levels.
Replacement may also be
needed if you notice reduced air
flow, windows fogging up,
or odors. Your dealer can help
you determine when it is the
right time to replace the filter.
Every 72 000 km/45,000 Miles
. Replace brake fluid (or every
three years, whichever occurs
first).
. Rear axle fluid (If equipped with
limited slip). Every 80 000 km/50,000 Miles
.
Evaporative control system
inspection. Check all fuel and
vapor lines and hoses for proper
hook-up, routing, and condition.
Every 100 000 km/60,000 Miles
(2.0L Turbo and 3.6L Twin Turbo
Engines)
. Spark plug replacement and
spark plug wire inspection. An
Emission Control Service.
Every 160 000 km/100,000 Miles
(2.5L and 3.6L Engines)
. Spark plug replacement and
spark plug wire inspection. An
Emission Control Service.
Every 240 000 km/150,000 Miles
. Engine cooling system drain and
refill (or every five years,
whichever occurs first). See
Cooling System (Engine) 0259
or Cooling System (Intercooler)
0 261. An Emission Control
Service. .
Engine drive belts inspection for
fraying, excessive cracks,
or obvious damage (or every
10 years, whichever occurs
first). Replace, if needed.
Severe Conditions Requiring
More Frequent Maintenance*
.Public service, military,
or commercial use vehicles to
include the following:
‐Ambulances, police cars and
emergency rescue vehicles.
‐ Civilian vehicles such as light
duty pick-up trucks, SUVs and
passenger cars that are used
in military applications.
‐ Recovery vehicles such as
tow trucks and flatbed single
vehicle carriers or any vehicle
that is consistently used in
towing trailers or other loads.
‐ High use commercial vehicles
such as courier delivery
vehicles, private security patrol
vehicles or any vehicles that
operate on a 24 hour basis.

Cadillac ATS/ATS-V Owner Manual (GMNA-Localizing-MidEast-9369639) -
2016 - crc - 12/9/15
Service and Maintenance 327
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
UsageFluid/Lubricant
Engine Oil Engine oil meeting the dexos1™ specification of the proper SAE viscosity
grade. ACDelco dexos1 Synthetic Blend is recommended. See Engine
Oil 0254.
Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL
®Coolant.
See Engine Coolant 0261.
Hydraulic Brake System DOT 3 Hydraulic Brake Fluid (GM Part No. 19299818). Windshield Washer Automotive windshield washer fluid that meets regional freeze protection requirements.
Automatic Transmission DEXRON
®-HP Automatic Transmission Fluid (GM Part No. 19300536).
Rear Axle (Non-Limited Slip Differential) Gear DEXRON MTF 75W-90 (GM Part No. 88863089).
Rear Axle (Limited Slip Differential) DEXRON LS Gear 75W-90 (GM Part No. 88862624). Chassis Lubrication Chassis Lubricant (GM Part No. 12377985) or lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
Hood Latch Assembly, Secondary Latch, Pivots, Spring Anchor, and Release Pawl Lubriplate Lubricant Aerosol (GM Part No. 89021668) or lubricant meeting
requirements of NLGI #2, Category LB or GC-LB.
Key Lock Cylinders, Hood and Door Hinges Multi-Purpose Lubricant, Superlube (GM Part No. 12346241).