2009 CADILLAC ESCALADE EXT overheating

Engine Coolant
The cooling system in the vehicle is lled with
DEX-COOL®engine coolant. This coolant is designed
to remain in the vehicle for ve years or 150,000 miles
(240 000 km), whichever occurs rst.
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, seeEngine
Overheating on page 6-30.
What to Use
{CAUTION:
Adding only plain water to the cooling system can
be dangerous. Plain water, or some other liquid
such as alcohol, can boil before the proper coolant
mixture will. The vehicle’s 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 re 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. If using this mixture, nothing else
needs to be added. This mixture:
Gives freezing protection down to−34°F (−37°C),
outside temperature.
Gives boiling protection up to 265°F (129°C),
engine temperature.
Protects against rust and corrosion.
Will not damage aluminum parts.
Helps keep the proper engine temperature.
Notice:If an improper coolant mixture is used, the
engine could overheat and be badly damaged.
The repair cost would not be covered by the vehicle
warranty. Too much water in the mixture can
freeze and crack the engine, radiator, heater core,
and other parts.
Notice:If extra inhibitors and/or additives are used
in the vehicle’s cooling system, the vehicle could
be damaged. Use only the proper mixture of
the engine coolant listed in this manual for the
cooling system. SeeRecommended Fluids and
Lubricants on page 7-13for more information.
6-26

4. With the coolant surge tank pressure cap off, 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 may be lower. If the level is lower, add
more of the proper mixture to the coolant surge tank
until the level reaches the FULL COLD mark.5. Replace the pressure cap. Be sure the pressure
cap is hand-tight and fully seated.
6. Verify coolant level after engine is shut off and the
coolant is cold. If necessary, repeat coolant ll
procedure Steps 1 through 6.
Notice: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.
Engine Overheating
The vehicle has several indicators to warn of engine
overheating.
There is a coolant temperature gage on your vehicle’s
instrument panel. SeeEngine Coolant Temperature
Gage on page 3-35.
In addition, ENGINE OVERHEATED STOP ENGINE,
ENGINE OVERHEATED IDLE ENGINE, and a ENGINE
POWER IS REDUCED message comes on in the
Driver Information Center (DIC) on the instrument panel.
SeeDIC Warnings and Messages on page 3-48.
6-30

You may decide not to lift the hood when this warning
appears, but instead get service help right away.
SeeRoadside Service on page 8-7.
If you do decide 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, both fans should
be running. If they are not, do not continue to run
the engine and have the vehicle serviced.
Notice:Engine damage from running your engine
without coolant is not covered by your warranty. See
Overheated Engine Protection Operating Mode on
page 6-33for information on driving to a safe place
in an emergency.
Notice:If the engine catches re while driving with
no coolant, the vehicle can be badly damaged.
The costly repairs would not be covered by
the vehicle warranty. SeeOverheated Engine
Protection Operating Mode on page 6-33for
information on driving to a safe place in an
emergency.If Steam Is Coming From The Engine
Compartment
{CAUTION:
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. 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 vehicles engine is
overheated, the liquids in it can catch re. You or
others could be badly burned. Stop the engine if it
overheats, and get out of the vehicle until the
engine is cool.
SeeOverheated Engine Protection Operating Mode
on page 6-33for information on driving to a safe
place in an emergency.
6-31

3. Install the new blade onto the arm connector and
make sure the grooved areas are fully set in the
locked position.
For the proper type and size, seeMaintenance
Replacement Parts on page 7-15.
Tires
Your new vehicle comes with high-quality tires
made by a leading tire manufacturer. If you ever
have questions about your tire warranty and where
to obtain service, see your vehicle Warranty
booklet for details. For additional information refer
to the tire manufacturer.
{CAUTION:
Poorly maintained and improperly used
tires are dangerous.
Overloading your tires can cause
overheating as a result of too much
exing. You could have an air-out and a
serious accident. SeeLoading the
Vehicle on page 5-31.
Underinated tires pose the same danger
as overloaded tires. The resulting
accident could cause serious injury.
CAUTION: (Continued)
6-54

Electronic Immobilizer
PASS-Key®III+...........................................2-29
Electronic Immobilizer Operation
PASS-Key
®III+...........................................2-29
Engine
Air Cleaner/Filter.........................................6-19
Check and Service Engine Soon Lamp...........3-36
Coolant......................................................6-26
Coolant Heater............................................2-34
Coolant Temperature Gage...........................3-35
Drive Belt Routing.......................................7-16
Engine Compartment Overview......................6-14
Exhaust.....................................................2-45
Fan Noise..................................................6-33
Oil .............................................................6-15
Oil Life System...........................................6-18
Overheated Protection Operating Mode...........6-33
Overheating................................................6-30
Starting......................................................2-32
Entry/Exit Lighting...........................................3-19
Event Data Recorders.....................................8-16
Extender, Safety Belt.......................................1-31
Exterior Cargo Lamps......................................3-18
Exterior Lamps...............................................3-13
F
Features
Memory ....................................................... 1-7
Filter
Engine Air Cleaner......................................6-19
Finish Damage.............................................6-101
Fixed Mast Antenna........................................3-90
Flashers, Hazard Warning.................................. 3-5
Flash-to-Pass................................................... 3-8
Flat Tire........................................................6-76
Flat Tire, Changing.........................................6-77
Flat Tire, Storing.............................................6-90
Fluid
Automatic Transmission................................6-21
Power Steering...........................................6-33
Windshield Washer......................................6-34
Fog Lamp
Fog ...........................................................3-18
Fog Lamp Light..............................................3-40
Front Axle......................................................6-47
Fuel............................................................... 6-5
Additives...................................................... 6-7
California Fuel.............................................. 6-6
Driving for Better Economy............................. 5-2
E85 (85% Ethanol)........................................ 6-8
Filling a Portable Fuel Container....................6-11
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