2010 CADILLAC ESCALADE coolant temperature

Driving On Grades
Reduce speed and shift to a lower gearbeforestartingdown a long or steep downgrade. If the transmission isnot shifted down, the brakes might get hot and nolonger work well.
Vehicles can tow in D (Drive). Shift the transmission toa lower gear if the transmission shifts too often underheavy loads and/or hilly conditions.
The tow/haul mode may be used if the transmissionshifts too often. SeeTow/Haul Mode on page 3!36.
When towing at high altitude on steep uphill grades,consider the following: Engine coolant will boil at alower temperature than at normal altitudes. If the engineis turned off immediately after towing at high altitude onsteep uphill grades, the vehicle may show signs similarto engine overheating. To avoid this, let the engine runwhile parked, preferably on level ground, with theautomatic transmission in P (Park) for a few minutesbefore turning the engine off. If the overheat warningcomes on, seeEngine Overheating on page 7!34.
Parking on Hills
{WARNING:
Parking the vehicle on a hill with the trailer
attached can be dangerous. If something goes
wrong, the rig could start to move. People can be
injured, and both the vehicle and the trailer can be
damaged. When possible, always park the rig on
a flat surface.
If parking the rig on a hill:
1. Press the brake pedal, but do not shift intoP (Park) yet. Turn the wheels into the curb if facingdownhill or into traffic if facing uphill.
2. Have someone place chocks under the trailerwheels.
3. When the wheel chocks are in place, release theregular brakes until the chocks absorb the load.
6-52

Cooling System
The cooling system allows the engine to maintain thecorrect working temperature.
A. Coolant Surge Tank
B. Coolant SurgeTank Pressure Cap
C. Engine Cooling Fan(s)
{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.
7-28

What to Use
{WARNING:
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 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 andDEX-COOL®coolant. If using this mixture, nothingelse 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, theengine could overheat and be badly damaged. Therepair cost would not be covered by the vehiclewarranty. Too much water in the mixture can freezeand crack the engine, radiator, heater core, andother parts.
Notice:If extra inhibitors and/or additives are usedin the vehicle's cooling system, the vehicle could bedamaged. Use only the proper mixture of the enginecoolant listed in this manual for the cooling system.SeeRecommended Fluids and Lubricantsonpage 8!10for more information.
7-30

4. With the coolant surge tank pressure cap off, startthe engine and let it run until you can feel theupper radiator hose getting hot. Watch out for theengine cooling fan.
By this time, the coolant level inside the coolantsurge tank may be lower. If the level is lower, addmore of the proper mixture to the coolant surgetank until the level reaches the FULL COLD mark.
5. Replace the pressure cap. Be sure the pressurecap is hand-tight and fully seated.
6. Verify coolant level after engine is shut off and thecoolant is cold. If necessary, repeat coolant fillprocedure Steps 1 through 6.
Notice:If the pressure cap is not tightly installed,coolant loss and possible engine damage mayoccur. Be sure the cap is properly and tightlysecured.
Engine Overheating
The vehicle has several indicators to warn of engineoverheating.
There is a coolant temperature gage on your vehicle'sinstrument panel. SeeEngine Coolant TemperatureGage on page 4!35.
In addition, ENGINE OVERHEATED STOP ENGINE,ENGINE OVERHEATED IDLE ENGINE, and a ENGINEPOWER IS REDUCED message comes on in the DriverInformation Center (DIC) on the instrument panel. SeeDIC Warnings and Messages on page 4!48.
You may decide not to lift the hood when this warningappears, but instead get service help right away. SeeRoadside Service on page 9!8.
7-34

If No Steam Is Coming From The
Engine Compartment
The ENGINE OVERHEATED STOP ENGINE or theENGINE OVERHEATED IDLE ENGINE message, alongwith a low coolant condition, can indicate a seriousproblem.
If you get an engine overheat warning, but see or hearno steam, the problem may not be too serious.Sometimes the engine can get a little too hot when you:
.Climb a long hill on a hot day.
.Stop after high-speed driving.
.Idle for long periods in traffic.
.Tow a trailer. SeeTowing a Trailer on page 6!42.
If you get the ENGINE OVERHEATED STOP ENGINEor the ENGINE OVERHEATED IDLE ENGINE messagewith no sign of steam, try this for a minute or so:
If the overheat warning is displayed with no sign ofsteam:
1. Turn the air conditioning off.
2. Turn the heater on to the highest temperature andto the highest fan speed. Open the windows asnecessary.
3. In heavy traffic, let the engine idle in N (Neutral)while stopped. If it is safe to do so, pull off theroad, shift to P (Park) or N (Neutral) and let theengine idle.
If the temperature overheat gage is no longer in theoverheat zone or an overheat warning no longerdisplays, the vehicle can be driven. Continue to drivethe vehicle slow for about 10 minutes. Keep a safevehicle distance from the car in front of you. If thewarning does not come back on, continue to drivenormally.
If the warning continues, pull over, stop, and park thevehicle right away.
If there is no sign of steam, idle the engine forfive minutes while parked. If the warning is stilldisplayed, turn off the engine until it cools down. Also,see“Overheated Engine Protection Operating Mode”later in this section.
7-36

Overheated Engine Protection
Operating Mode
If an overheated engine condition exists and theENGINE POWER IS REDUCED message is displayed,an overheat protection mode which alternates firinggroups of cylinders helps prevent engine damage. Inthis mode, you will notice a loss in power and engineperformance. This operating mode allows the vehicle tobe driven to a safe place in an emergency. Drivingextended miles (km) and/or towing a trailer in theoverheat protection mode should be avoided.
Notice:After driving in the overheated engineprotection operating mode, to avoid engine damage,allow the engine to cool before attempting anyrepair. The engine oil will be severely degraded.Repair the cause of coolant loss, change the oil andreset the oil life system. SeeEngine Oilonpage 7!17.
Engine Fan Noise
The vehicle has electric cooling fans. You might hearthe fans spinning at low speed during most everydaydriving. The fans can turn off if no cooling is required.Under heavy vehicle loading, trailer towing, and/or highoutside temperatures, or if you are operating the airconditioning system, the fans can change to high speedand you might hear an increase in fan noise. This isnormal and indicates that the cooling system isfunctioning properly. The fans change to low speedwhen additional cooling is no longer required.
7-37

Windshield Washer Fluid
What to Use
When windshield washer fluid needs to be added, besure to read the manufacturer's instructions before use.Use a fluid that has sufficient protection against freezingin an area where the temperature may fall belowfreezing.
Adding Washer Fluid
The vehicle has a low washer fluid message in the DICthat comes on when the washer fluid is low. Themessage is displayed for 15 seconds at the start ofeach ignition cycle. When the WASHER FLUID LOWADD FLUID message displays, you will need to addwasher fluid to the windshield washer fluid reservoir.
Open the cap with thewasher symbol on it. Addwasher fluid until the tankis full. SeeEngineCompartment Overviewon page 7!16forreservoir location.
Notice:
.When using concentrated washer fluid,
follow the manufacturer's instructions for
adding water.
.Do not mix water with ready-to-use washer
fluid. Water can cause the solution to freeze
and damage the washer fluid tank and other
parts of the washer system. Also, water does
not clean as well as washer fluid.
.Fill the washer fluid tank only three-quarters
full when it is very cold. This allows for fluid
expansion if freezing occurs, which could
damage the tank if it is completely full.
.Do not use engine coolant (antifreeze) in the
windshield washer. It can damage the
vehicle's windshield washer system and
paint.
7-39

Cleaning (cont.)
Weatherstrips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-102
Windshield, Backglass, and Wiper Blades . . . . . . .7-104
Wood Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-101
Climate Control System
Outlet Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25
Rear Air Conditioning and Heating System,
Electronic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26
Climate Control Systems
Dual Automatic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
Climate Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
Collision Damage Repair . . . . . . . . . . . . . . . . . . . . . . . . . . 9-13
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-47
Content Theft-Deterrent . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
Control of a Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-3
Coolant
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-29
Engine Temperature Gage . . . . . . . . . . . . . . . . . . . . . . . . 4-35
Cooled Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-28
Courtesy Transportation Program . . . . . . . . . . . . . . . . . . 9-11
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-8
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-39
Cupholders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-62
Customer Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-6
Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6
Text Telephone (TTY) Users . . . . . . . . . . . . . . . . . . . . . . . 9-6
Customer Information
Service Publications Ordering Information . . . . . . . . 9-17
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . .9-2
D
Damage Repair, Collision . . . . . . . . . . . . . . . . . . . . . . . . . . 9-13
Data Recorders, Event . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-19
Database Coverage Explanations . . . . . . . . . . . . . . . . . 5-59
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . . . 4-15
Defensive Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
DIC Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-47
Doing Your Own Service Work . . . . . . . . . . . . . . . . . . . . . . .7-6
Dome Lamp Override . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
Door
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Power Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Programmable Automatic Door Locks . . . . . . . . . . . . 3-11
Rear Door Security Locks . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Drive Systems
All-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-49
i - 4