engine coolant CADILLAC SEVILLE 1997 4.G User Guide

Downloaded from www.Manualslib.com manuals search engine You will find an ENGINE COOLANT HOT-IDLE
ENGINE message or a STOP ENGINE ENGINE
OVERHEATED message
on the Driver Information
Center
(DIC). There is also an engine temperature
warning light and/or gage on the instrument panel.
See “Engine Coolant Temperature Warning Light”
or “Engine Coolant Temperature Gage” in the Index
Should a low coolant condition exist and the message
STOP ENGINE ENGINE OVERI-IEATED is displayed,
an overheat protection mode which alternates firing
groups of four 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; you may
drive up
to 50 miles (80 km). 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. Kcpair
the cause
of coolant loss, change the oil and reset
the
oil life indicator. See “Engine Oil, lli’hcn to
Change” in the Index.

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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 hcur steam coming
from
it. Just turn it off and get c’veryone 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 your engine is
overheated, the liquids in it can catch fire.
You or
others could be
badly burned. Stop your engine if
it overheats, and get out of the vehicle until the
engine
is cool.
I NOTICE:
If your engine catches fire 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” in the Index.

Downloaded from www.Manualslib.com manuals search engine When you decide it's safe to lift the hood, here's what
you'll
see: I 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
.. i . .. . . .. . . . .. . .
.. .. .. .. . ,.. :. .
..
any underhood electric fan.
I I
If the coolant inside the coolant surge tank is boiling.
don't do anything else
until it cools down.
A. Coolant Surge Tank with Pressure Cap
B. Electric Engine Fans

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.
A CAUTION:
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.
NOTICE:
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.

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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.)
* 0
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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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.
1

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NOTICE:
In cold weather, water can freeze and crack the
engine, radiator, heater core and other
parts. So
use the recommended coolant.
A 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. 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 stop. A hiss means
there
is still some pressure left.

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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.

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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 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
bass 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 COOL.ANT LEVEL message does
appear. repeat Steps 1 through 3 or see your dealer.

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Here you will find information about the care of your Cadillac. This section begins with servicc and fucl information,
and then it shows how to check important fluid and lubricant levels. There is also
technical in1i)m;ttion about your
vehicle, and
a part devoted to its appearance care.
6-2
6-3
6-4
6-5
6-7
6-1
0
6- 14
6-17
6-2
I
6-26
6-27
6-30
6-3
1
6-36
6-37
6-45
6-46
6-49 6-49
Se.rvice
Fuel
Fuels in Foreign Countries
Filling Your Tank
Checking Things Under the Hood
Engine Oil
Ais 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
Cleaning Glass Surfaces
6-50
6-50
6-50
6-5 1
6-52
6-5
2
6-52
6-52
6-5 3
6-54 6-54
6-55 6-64
6-64
6-65
6-65
Cleaning thc Oulside of thc b’indshield and
Wiper Blades
Weatherstrips Cleaning the Outside
of Your Cadillac
Cleaning Aluminum or
Chrome Wheels
(If Equipped)
Cleanink Tires
Sheet Metal Damage
Underbody Maintenance
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