2007 CADILLAC ESCALADE engine overheat

Notice:If your engine catches re because
you keep driving with no coolant, your vehicle
can be badly damaged. The costly repairs
would not be covered by your warranty. See
Overheated Engine Protection Operating Mode
on page 424for information on driving to a
safe place in an emergency.
If No Steam Is Coming From Your
Engine
The ENGINE OVERHEATED STOP ENGINE or
the ENGINE OVERHEATED IDLE ENGINE
message, along with a low coolant condition, can
indicate a serious problem.
If you get an engine overheat warning, but see or
hear no 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 379.If you get the ENGINE OVERHEATED STOP
ENGINE or the ENGINE OVERHEATED IDLE
ENGINE message with no sign of steam, try this
for a minute or so:
1. If you have an air conditioner and it is on, turn
it off.
2. Turn on your heater to full hot at the highest
fan speed and open the windows as
necessary.
3. In heavy traffic, let the engine idle in
NEUTRAL (N) while stopped. If it is safe to do
so, pull off the road, shift to PARK (P) or
NEUTRAL (N) and let the engine idle.
If you no longer have the overheat warning, you
can drive. Just to be safe, drive slower for
about 10 minutes. If the warning does not come
back on, you can drive normally.
If the warning continues, pull over, stop, and park
your vehicle right away.
423

If there is still no sign of steam and your vehicle
has an engine-driven cooling fan, push down
the accelerator until the engine speed is about
twice as fast as normal idle speed for at least
ve minutes while you are parked.
If there is still no sign of steam and your vehicle
has an electric cooling fan, idle the engine for
at least ve minutes while you are parked.
If you still have the warning, turn off the engine
and get everyone out of the vehicle until it
cools down. Also, see “Overheated Engine
Protection Operating Mode” later in this section.
You may decide not to lift the hood but to get
service help right away.Overheated Engine Protection
Operating Mode
If an overheated engine condition exists and the
REDUCED ENGINE POWER message is
displayed, an overheat protection mode which
alternates ring groups of cylinders helps prevent
engine damage. In this mode, you will notice a
loss in power and engine performance. This
operating mode allows your vehicle to be driven to
a safe place in an emergency. Driving extended
miles (km) and/or towing a trailer in the overheat
protection mode should be avoided.
Notice:After driving in the overheated engine
protection operating mode, to avoid engine
damage, allow the engine to cool before
attempting any repair. The engine oil will be
severely degraded. Repair the cause of coolant
loss, change the oil and reset the oil life
system. SeeEngine Oil on page 407.
424

Cooling System
When you decide it is safe to lift the hood, here is
what you will see:
A. Coolant Surge Tank
B. Coolant Surge Tank Pressure Cap
C. Engine Cooling Fan{CAUTION:
An electric engine cooling fan under the
hood can start up even when the engine
is not running and can injure you. Keep
hands, clothing and tools away from any
underhood electric fan.
If the coolant inside the coolant surge tank is
boiling, do not do anything else until it cools down.
The vehicle should be parked on a level surface.
Check the coolant level after the system cools
down. Some amount of coolant may be lost due to
overheating.
425

The coolant level should be at or above the
FULL COLD mark. If it is not, you may have a
leak at the pressure cap or in the radiator
hoses, heater hoses, radiator, water pump, or
somewhere else in the cooling system.
{CAUTION:
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 re,
and you could be burned. Get any leak
xed before you drive the vehicle.
Notice:Engine damage from running your
engine without coolant is not covered by your
warranty. SeeOverheated Engine Protection
Operating Mode on page 424for information on
driving to a safe place in an emergency.
426

{CAUTION:
Adding only plain water to your cooling
system can be dangerous. Plain water, or
some other liquid such as alcohol, can
boil before the proper coolant mixture will.
Your vehicle’s coolant warning system is
set for the proper coolant mixture. With
plain water or the wrong mixture, your
engine could get too hot but you would
not get the overheat warning. Your engine
could catch re and you or others could
be burned. Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
®coolant.
Notice: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.
{CAUTION:
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. You can remove the
coolant surge tank
pressure cap
when the cooling
system, including
the coolant
surge tank pressure
cap and upper
radiator hose, is no
longer hot.
Remove the coolant surge tank pressure cap
by slowly turning the pressure cap
counterclockwise about one full turn. If you
hear a hiss, wait for that to stop. A hiss means
there is still some pressure left.
428

Door
Delayed Locking...................................... 124
Locks....................................................... 123
Power Door Locks................................... 124
Programmable Automatic Door Locks....... 124
Rear Door Security Locks........................ 124
Driver
Position, Safety Belt................................... 43
Driver Information Center (DIC)................... 245
DIC Operation and Displays..................... 245
DIC Vehicle Customization....................... 259
DIC Warnings and Messages................... 250
Driving
At Night................................................... 354
City.......................................................... 358
Defensive................................................. 322
Drunken................................................... 323
Freeway................................................... 359
Hill and Mountain Roads.......................... 362
In Rain and on Wet Roads...................... 355
Off-Road.................................................. 338
Recovery Hooks....................................... 369
Rocking Your Vehicle to Get it Out.......... 368
Winter...................................................... 364
Dual Automatic Climate Control System....... 220
DVD
Rear Seat Entertainment System............. 303E
Electrical System
Add-On Equipment................................... 506
Center Instrument Panel Fuse Block........ 510
Fuses and Circuit Breakers...................... 507
Instrument Panel Fuse Block................... 507
Power Windows and Other Power
Options................................................. 507
Underhood Fuse Block............................. 511
Windshield Wiper Fuses........................... 507
Engine
Air Cleaner/Filter...................................... 412
Battery..................................................... 436
Check and Service Engine Soon Light..... 239
Coolant.................................................... 419
Coolant Heater......................................... 143
Coolant Temperature Gage...................... 238
Drive Belt Routing.................................... 534
Engine Compartment Overview ................ 406
Exhaust................................................... 155
Fan Noise................................................ 430
Oil ........................................................... 407
Oil Life System........................................ 410
Overheated Protection Operating Mode.... 424
563

Engine (cont.)
Overheating............................................. 422
Starting.................................................... 141
Entry Lighting.............................................. 213
Event Data Recorders (EDR)...................... 551
Exit Lighting................................................ 213
Extender, Safety Belt..................................... 59
Exterior Lamps............................................ 205
F
Filter
Engine Air Cleaner................................... 412
Finish Damage............................................ 504
Flashers, Hazard Warning........................... 194
Flat Tire...................................................... 476
Flat Tire, Changing...................................... 476
Flat Tire, Storing......................................... 492
Fluid
Automatic Transmission............................ 415
Power Steering........................................ 430
Windshield Washer.................................. 431
Fog Lamp Light........................................... 243
Fog Lamps.................................................. 212
Front Axle................................................... 445Fuel............................................................ 398
Additives.................................................. 399
California Fuel.......................................... 399
Filling a Portable Fuel Container.............. 403
Filling Your Tank...................................... 401
Fuels in Foreign Countries....................... 400
Gage....................................................... 244
Gasoline Octane...................................... 398
Gasoline Specications............................ 398
Fuses
Center Instrument Panel Fuse Block........ 510
Fuses and Circuit Breakers...................... 507
Instrument Panel Fuse Block................... 507
Underhood Fuse Block............................. 511
Windshield Wiper..................................... 507
G
Gage
Engine Coolant Temperature.................... 238
Fuel......................................................... 244
Speedometer........................................... 230
Tachometer.............................................. 230
Garage Door Opener..........................167, 168
Garment Hooks........................................... 179
564

Oil
Engine..................................................... 407
Pressure Light.......................................... 242
Oil, Engine Oil Life System......................... 410
Older Children, Restraints............................. 60
Online Owner Center................................... 543
OnStar
®System, see OnStar®Manual........ 165
Other Warning Devices................................ 194
Outlet Adjustment........................................ 225
Outlet(s), Accessory Power.......................... 218
Outside
Power Foldaway Mirrors........................... 162
Overheated Engine Protection
Operating Mode....................................... 424
Owner Checks and Services....................... 527
Owners, Canadian.......................................... 3
P
Paint, Damage............................................ 504
Park Aid...................................................... 214
Park (P)
Shifting Into............................................. 152
Shifting Out of......................................... 153Parking
Assist....................................................... 214
Brake....................................................... 151
Over Things That Burn............................ 154
Passenger Airbag Status Indicator............... 233
Passenger Sensing System ......................... 101
Passing....................................................... 335
PASS-Key
®III+........................................... 137
PASS-Key®III+ Operation........................... 137
Power
Accessory Outlet(s).................................. 218
Door Locks.............................................. 124
Electrical System..................................... 507
Liftgate..................................................... 128
Lumbar Controls........................................ 10
Reclining Seatbacks................................... 15
Retained Accessory (RAP)....................... 141
Running Boards....................................... 132
Seat............................................................ 9
Steering Fluid.......................................... 430
Windows.................................................. 134
Pretensioners, Safety Belt............................. 59
Programmable Automatic Door Locks.......... 124
568