1997 CADILLAC DEVILLE engine coolant

Downloaded from www.Manualslib.com manuals search engine When you decide it’s safe to lift the hood, here’s what
you’ll see:
A. Coolant Surge Tank with Pressure Cap
B. Electric Engine Fans
A CAUTION:
An electric 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,
don’t do anything else until it cools down.
5-18

Downloaded from www.Manualslib.com manuals search engine If it isn’t, the coolant level should be indicated by a
CHECK COOLANT LEVEL message on the Driver
Information Center. If it is, you may have a leak in the
radiator hoses, heater hoses, radiator, water pump or
somewhere else in the cooling system. Heater and radiator
hoses, and other engine
parts, can be very hot. Don’t touch them.
If you
do, you can be burned.
Don’t 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.
ICE:
Engine damage if you keep running your engine
without coolant isn’t covered by your warranty.
See “Overheated Engine Protection Operating
Mode” in the Index.
If there
seems to be no leak, with the engine on, check to
see if the electric engine fans are running.
If the engine
is overheating, both fans should be running. If they
aren’t, your vehicle needs service.
5-19

Downloaded from www.Manualslib.com manuals search engine How to Add Coolant to the Coolant
Surge
lank
If you haven’t found a problem yet, but the coolant level
isn’t at the proper level
(2.5 inches (6.4 cm) below the
base of the fill neck), add
a 50/50 mixture of clean
water (preferably distilled) 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. (See “Engine Coolant” in the Index for
more information.)
A CAUTION:
Steam and scalding liquids from a hot cooling
system can blow out and burn you badly. They
are under pressure, and if you turn the coolant
surge tank pressure cap
-- even a little -- they
can come out at high speed. Never turn the cap
when the cooling system, including the coolant
surge tank pressure cap,
is hot. Wait for the
cooling system and coolant surge tank pressure
cap to cool
if you ever have to turn the
pressure cap.
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Downloaded from www.Manualslib.com manuals search engine ‘I, .b : .H
I A CAUTION:
Adding only plain water to your cooling system
can be dangerous. Plain water,
or some other
liquid like alcohol, can boil before the proper
coolant mix will. Your vehicle’s coolant warning
system
is set for the proper coolant mix. With
plain water or the wrong mix, your engine could
get too hot but you wouldn’t get the overheat
warning. Your engine could catch fire and you or
others could be burned. Use a
50/50 mix of clean
water and DEX-COOL@coolant.

Downloaded from www.Manualslib.com manuals search engine NOTICE:
In cold weather, water can freeze and crack the
engine, radiator, heater core and other parts.
So
use the recommended coolant.
I
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. Don’t 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. Turn the pressure cap slowly
counterclockwise
until it first stops. (Don’t press
down while turning the pressure cap.)
If you hear a hiss, wait for that to ston A hiss means
there is still some pressure left.
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Downloaded from www.Manualslib.com manuals search engine 2. Then keep turning the cap, but now push down as
you turn it. Remove the pressure cap. 3. Then fill the coolant surge tank with the proper mix,
up to the base of the filler neck.
5-23

Downloaded from www.Manualslib.com manuals search engine 4. With the coolant surge tank pressure cap off, start the
engine and let it fun until you can feel the upper
radiator hose getting hot. Watch out for the
engine fans.
By this time, the coolant level inside the coolant surge tank
may be lower. If the level is lower, add
more
of the proper mix to the coolant surge tank
until the level reaches about
2.5 inches (6.4 cm)
below the base of the filler neck.
5. Then replace the pressure cap. Be sure the arrows on
the pressure cap line up like this.
Start the engine and allow it
to warm up. If the CHECK
COOLANT LEVEL message does not appear on the
Driver Information Center, coolant is at the proper fill
level. If
a CHECK COOLANT LEVEL message does
appear, repeat Steps
1 through 3 or see your dealer.
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Downloaded from www.Manualslib.com manuals search engine $z=* ‘dc
Section 6 Service and Appearance Care
Here you will find information about the care of your Cadillac. This section begins with service and fuel information,
and then it shows how to check important fluid and lubricant levels. There is also technical information about your
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6-5
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6-30
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vehicle, and a part
devoted to its appearance care.
Service
Fuel
Fuels in Foreign Countries
Filling Your Tank
Checking Things Under the Hood
Engine Oil
Air Cleaner
Automatic Transaxle Fluid
Engine Coolant
Windshield Washer Fluid
Brakes
Battery
Bulb Replacement
Windshield Wiper Blade Replacement
Tires
Appearance Care
Cleaning the Inside of Your Cadillac
Care
of Safety Belts 6-52
6-5 3
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6-53
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6-59
6-69
6-69
6-70
6-70 Cleaning Glass
Surfaces
Cleaning the Outside of the Windshield and
Wiper Blades
Weatherstrips Cleaning the Outside of Your Cadillac
Cleaning Aluminum or Chrome Wheels
(If Equipped)
Cleaning Tires
Sheet Metal Damage
Chemical Paint Spotting
Appearance Care Materials Chart
Vehicle Identification Number
(VIN)
Service Parts Identification Label
Electrical System
Replacement Bulbs
Capacities and Specifications
Air Conditioning Refrigerants
Normal Maintenance Replacement Parts
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