1998 CADILLAC SEVILLE Owners Manual

Downloaded from www.Manualslib.com manuals search engine How to Add Coolant to the Coolant
Surge Tank
If you haven’t found a problem yet, but the coolant level
isn’t at or above the fill mark at the forward edge of
the
surge tank, 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.)
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.
5-20

Downloaded from www.Manualslib.com manuals search engine 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 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 wouldn’t
get the overheat warning. Your engine could
catch fire and you or others could be burned.
Use a
50150 mixture of clean water and
DEX-COOL@ coolant.
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.

Downloaded from www.Manualslib.com manuals search 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 about
one-quarter turn to the left and then stop.
If you hear a hiss, wait for that to stop. A hiss means
there is still some pressure left.
2. Then keep turning the pressure cap slowly, and
remove it.
3. Then fill the coolant surge tank with the proper
mixture, up to or above the
fill mark at the forward
edge of the surge tank.
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Downloaded from www.Manualslib.com manuals search engine c'
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 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 mixture to the coolant surge tank
until the level reaches at or above the fill mark at the
forward edge of the surge tank.
5. Then replace the pressure cap. Be sure the pressure
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 to 3 and reinstall the pressure cap
or see your dealer.
cap
is tight.

Downloaded from www.Manualslib.com manuals search engine [f a Tire Goes Flat
Changing a Flat Tire
It’s unusual for a tire to “blow out” while you’re \
driving, If a tire goes flat, avoid further tire and wheel d\
amage
especially if you maintain your tires properly.
If air goes by driving slowly to a level place. Turn on your hazard
out
of a tire, it’s much more likely to leak out slowly. warning flash-x
But if you should ever have a “blowout,” here are a few\

tips about what to expect and what to do:
If a front tire fails, the flat tire will create a drag that
pulls the vehicle toward that side. Take your foot
off the
accelerator pedal and grip the steering wheel firmly.
Steer to maintain lane position, and then gently brake to
a stop well out of the traffic lane.
A rear blowout, particularly on a curve, acts much like a
skid and may require the same correction you’d use in a
skid. In any rear blowout, remove your foot from the
accelerator pedal. Get the vehicle under control by steering the way you want the vehicle to
go. It may be
very bumpy and noisy, but you can still steer. Gently
brake to a stop
-- well off the road if possible.
If a tire goes flat, the next part shows how to use your
jacking equipment to change a flat tire safely.
Changing a tire can cause an injury. The vehicle
can slip
off the jack and roll over you or other
people. You
and they could be badly injured.
Find
a level place to change your tire. To help
prevent the vehicle from moving:
1. Put the shift lever in PARK (P).
2. Set the parking brake firmly.
3. ”m off the engine.
To be even more certain the vehicle won’t move,
you can put blocks at the front and rear of the
tire farthest away from the one being changed.
That would be the tire on the other side of the
vehicle, at the opposite end.
5-24

Downloaded from www.Manualslib.com manuals search engine The following steps will tell you how to use the jack and
change a tire.
Removing the Spare Tire and Tools
The equipment you’ll need is in the trunk.
Instructions for changing your tires are on the inside of
the tire cover.
To lift the tire cover to gain access to the spare tire and
jacking equipment, do the following:
1. Press the area at the
front of the handle
so
that the back edge
swings upward.
5-25

Downloaded from www.Manualslib.com manuals search engine I 2. Grab the handle and
remove the cover.
Unscrew the wing nuts
to remove the container that
holds the wrench and jack.
Remove the wheel wrench, jack and spare tire from
the trunk.
5-26

Downloaded from www.Manualslib.com manuals search engine I ' --
.A
The tools you'll be using include the jack (A) and the
wheel wrench (B).
Removing the Wheel Cover
SLS Wheel Shown
On the SLS, there is a center wheel cover on the
aluminum wheel. Using the flat end
of the wheel
wrench, gently
pry the wheel cover off. Be careful not to
scratch the aluminum wheel edge and don't try to
remove it with your hands.
On the
STS, the wheel nuts and wheel nut covers are
exposed. Use the wheel wrench to remove the wheel nut covers.
5-27