2015 CADILLAC XTS SEDAN overheating

Black plate (19,1)Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-7707485) -
2015 - CRC - 10/31/14
Vehicle Care 10-19
The CAC bottle pressure cap can
be removed when the Charged Air
Coolant cooling system, including
the CAC bottle pressure cap, is no
longer hot.
1. Turn the pressure cap slowlycounterclockwise and remove it.
2. Fill the CAC bottle with the proper mixture to the COLD FILL
mark pointed to on the front of
the CAC bottle.
3. Replace the pressure cap tightly.
Engine Overheating
The vehicle has an engine coolant
temperature gauge and an engine
temperature light to warn of engine
overheating. There are also engine hot
messages that may be displayed in
the Driver Information Center (DIC).
See
Engine Cooling System
Messages on page 5-38.
If the decision is made not to lift the
hood when one of these warnings
appears, but get service help right
away. See Roadside Service on
page 13-5.
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 fans are running. If the
engine is overheating, the fans
should be running. If they are not,
do not continue to run the engine
and have the vehicle serviced.{Caution
Running the engine without
coolant may cause damage or a
fire. Vehicle damage would not be
(Continued)
Caution (Continued)
covered by the vehicle warranty.
SeeOverheated Engine
Protection Operating Mode on
page 10-20 for information on
driving to a safe place in an
emergency.
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.
(Continued)

Black plate (38,1)Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-7707485) -
2015 - CRC - 10/31/14
10-38 Vehicle Care
Wheels and Tires
Tires
Every new GM vehicle has
high-quality tires made by a
leading tire manufacturer. See
the warranty manual for
information regarding the tire
warranty and where to get
service. For additional
information refer to the tire
manufacturer.
{Warning
.Poorly maintained and
improperly used tires are
dangerous.
.Overloading the tires can
cause overheating as a
result of too much flexing.
There could be a blowout
(Continued)
Warning (Continued)
and a serious crash. See
Vehicle Load Limits on
page 9-10.
.Underinflated tires pose
the same danger as
overloaded tires. The
resulting crash could
cause serious injury.
Check all tires frequently
to maintain the
recommended pressure.
Tire pressure should be
checked when the tires
are cold.
.Overinflated tires are more
likely to be cut, punctured,
or broken by a sudden
impact —such as when
hitting a pothole. Keep
tires at the recommended
pressure.
(Continued)
Warning (Continued)
.Worn or old tires can
cause a crash. If the tread
is badly worn,
replace them.
.Replace any tires that
have been damaged by
impacts with potholes,
curbs, etc.
.Improperly repaired tires
can cause a crash. Only
the dealer or an
authorized tire service
center should repair,
replace, dismount, and
mount the tires.
.Do not spin the tires in
excess of 56 km/h
(35 mph) on slippery
surfaces such as snow,
mud, ice, etc. Excessive
spinning may cause the
tires to explode.

Black plate (45,1)Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-7707485) -
2015 - CRC - 10/31/14
Vehicle Care 10-45
Treadwear Indicators:Narrow
bands, sometimes called wear
bars, that show across the tread
of a tire when only 1.6 mm (1/
16 in) of tread remains. See
When It Is Time for New Tires
on page 10-53.
UTQGS (Uniform Tire Quality
Grading Standards)
:A tire
information system that provides
consumers with ratings for a
tire's traction, temperature, and
treadwear. Ratings are
determined by tire
manufacturers using
government testing procedures.
The ratings are molded into the
sidewall of the tire. See Uniform
Tire Quality Grading on
page 10-56.
Vehicle Capacity Weight
:The
number of designated seating
positions multiplied by 68 kg (150 lb) plus the rated
cargo load. See
Vehicle Load
Limits on page 9-10.
Vehicle Maximum Load on the
Tire
:Load on an individual tire
due to curb weight, accessory
weight, occupant weight, and
cargo weight.
Vehicle Placard
:A label
permanently attached to a
vehicle showing the vehicle
capacity weight and the original
equipment tire size and
recommended inflation pressure.
See “Tire and Loading
Information Label” underVehicle
Load Limits on page 9-10.
Tire Pressure
Tires need the correct amount of
air pressure to operate
effectively.
{Caution
Neither tire underinflation nor
overinflation is good.
Underinflated tires, or tires
that do not have enough air,
can result in:
.Tire overloading and
overheating which could
lead to a blowout.
.Premature or
irregular wear.
.Poor handling.
.Reduced fuel economy.
Overinflated tires, or tires that
have too much air, can
result in:
.Unusual wear.
.Poor handling.
.Rough ride.
.Needless damage from
road hazards.

Black plate (4,1)Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-7707485) -
2015 - CRC - 10/31/14
i-4 INDEX
Driving (cont'd)Loss of Control . . . . . . . . . . . . . . . . 9-5
Off-Road Recovery . . . . . . . . . . . . 9-5
Vehicle Load Limits . . . . . . . . . . . 9-10
Wet Roads . . . . . . . . . . . . . . . . . . . . 9-6
Winter . . . . . . . . . . . . . . . . . . . . . . . . . 9-8
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . 8-1
E
Electric Parking Brake . . . . . . . . . 9-27
Electric Parking Brake Light . . . 5-21
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . 9-69
Electrical System Engine Compartment
Fuse Block . . . . . . . . . . . . . . . . 10-31
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . 10-30
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . 10-34
Overload . . . . . . . . . . . . . . . . . . . 10-30
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . 10-36
Emergency
OnStar
®. . . . . . . . . . . . . . . . . . . . . . 14-2 Engine
Air Cleaner/Filter . . . . . . . . . . . 10-13
Check and Service Engine
Soon Light . . . . . . . . . . . . . . . . . . 5-18
Compartment Overview . . . . . . . 10-5
Coolant . . . . . . . . . . . . . . . . . . . . . 10-16
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 5-15
Coolant Temperature Warning Light . . . . . . . . . . . . . . . 5-25
Cooling System . . . . . . . . . . . . . 10-14
Cooling System Messages . . . 5-38
Cover . . . . . . . . . . . . . . . . . . . . . . . . . 10-8
Drive Belt Routing . . . . . . . . . . . . 12-4
Exhaust . . . . . . . . . . . . . . . . . . . . . . 9-22
Heater . . . . . . . . . . . . . . . . . . . . . . . . 9-18
Oil Life System . . . . . . . . . . . . . .10-11
Oil Messages . . . . . . . . . . . . . . . . . 5-39
Overheated Protection
Operating Mode . . . . . . . . . . . 10-20
Overheating . . . . . . . . . . . . . . . . 10-19
Power Messages . . . . . . . . . . . . . 5-39
Pressure Light . . . . . . . . . . . . . . . . 5-26
Running While Parked . . . . . . . . 9-22
Starting . . . . . . . . . . . . . . . . . . . . . . . 9-17
Entry Lighting . . . . . . . . . . . . . . . . . . . 6-8 Equipment, Towing . . . . . . . . . . . . 9-68
Event Data Recorders . . . . . . . . 13-14
Exit Lighting . . . . . . . . . . . . . . . . . . . . 6-8
Extender, Safety Belt . . . . . . . . . . 3-23
Exterior Lamp Controls . . . . . . . . . 6-1
Exterior Lamps Off Reminder . . . 6-3
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
F
FeaturesMemory . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Filter,
Engine Air Cleaner . . . . . . . . . 10-13
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 6-3
Flashers, Hazard Warning . . . . . . 6-5
Flat Tire . . . . . . . . . . . . . . . . . . . . . . 10-59 Changing . . . . . . . . . . . . . . . . . . . 10-69
Floor Mats . . . . . . . . . . . . . . . . . . . . 10-89
Fluid Automatic Transmission . . . . 10-13
Brakes . . . . . . . . . . . . . . . . . . . . . . 10-23
Power Steering . . . . . . . . . . . . . 10-21
Washer . . . . . . . . . . . . . . . . . . . . . 10-22
Folding Mirrors . . . . . . . . . . . . . . . . 2-21

Black plate (8,1)Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-7707485) -
2015 - CRC - 10/31/14
i-8 INDEX
Messages (cont'd)Lamp . . . . . . . . . . . . . . . . . . . . . . . . . 5-40
Object Detection System . . . . . 5-41
Ride Control System . . . . . . . . . . 5-43
Security . . . . . . . . . . . . . . . . . . . . . . 5-44
Service Vehicle . . . . . . . . . . . . . . . 5-45
Starting the Vehicle . . . . . . . . . . . 5-45
Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-45
Transmission . . . . . . . . . . . . . . . . . 5-46
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 5-35
Vehicle Reminder . . . . . . . . . . . . . 5-46
Vehicle Speed . . . . . . . . . . . . . . . . 5-46
Washer Fluid . . . . . . . . . . . . . . . . . 5-46
Window . . . . . . . . . . . . . . . . . . . . . . . 5-46
Mirrors Automatic DimmingRearview . . . . . . . . . . . . . . . . . . . . 2-22
Convex . . . . . . . . . . . . . . . . . . . . . . . 2-20
Folding . . . . . . . . . . . . . . . . . . . . . . . 2-21
Heated . . . . . . . . . . . . . . . . . . . . . . . 2-21
Power . . . . . . . . . . . . . . . . . . . . . . . . 2-20
Tilt in Reverse . . . . . . . . . . . . . . . . 2-21
Mirrors, Interior Rearview . . . . . . 2-22
Monitor System, Tire
Pressure . . . . . . . . . . . . . . . . . . . . 10-47N
NavigationOnStar®. . . . . . . . . . . . . . . . . . . . . . 14-3
Net, Convenience . . . . . . . . . . . . . . 4-4
New Vehicle Break-In . . . . . . . . . . 9-15
O
Object Detection System Messages . . . . . . . . . . . . . . . . . . . . 5-41
Odometer . . . . . . . . . . . . . . . . . . . . . . 5-13 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . . 9-5
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . 10-9
Engine Oil Life System . . . . . .10-11
Messages . . . . . . . . . . . . . . . . . . . . 5-39
Pressure Light . . . . . . . . . . . . . . . . 5-26
Older Children, Restraints . . . . . 3-38
Online Owner Center . . . . . . . . . . 13-4
OnStar . . . . . . . . . . . . . . . . . . . . . . . 13-14
OnStar
®
System, In Brief . . . . . . . . . . . . . . 1-22
OnStar®Additional
Information . . . . . . . . . . . . . . . . . . . 14-6
OnStar
®Connections . . . . . . . . . . 14-4 OnStar
®Emergency . . . . . . . . . . . 14-2
OnStar®Navigation . . . . . . . . . . . . 14-3
OnStar®Overview . . . . . . . . . . . . . 14-1
OnStar®Security . . . . . . . . . . . . . . 14-3
OnStar®Vehicle
Diagnostics . . . . . . . . . . . . . . . . . . 14-6
Operating Mode
Overheated EngineProtection . . . . . . . . . . . . . . . . . 10-20
Ordering Service Publications . . . . . . . . 13-10
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Overheated Engine Protection
Operating Mode . . . . . . . . . . . . . 10-20
Overheating, Engine . . . . . . . . . . 10-19
P
Park Shifting Into . . . . . . . . . . . . . . . . . . . 9-20
Shifting Out of . . . . . . . . . . . . . . . . 9-21
Parking
Brake and P (Park)Mechanism Check . . . . . . . . 10-26
Over Things That Burn . . . . . . . 9-21