1996 CADILLAC FLEETWOOD engine coolant

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.
urn t' Turn the pressure cap slowly about one-quarter ti
the left and then stop.
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
pressure cap slowly,
and remove it.
3. Then fill the coolant
surge tank with the
proper
mix, up to the
FULL COLD mark.
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Downloaded from www.Manualslib.com manuals search engine 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 the
FULL COLD mark.
5. Then replace the
pressure cap. Be
sure the pressure
cap is tight.
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Downloaded from www.Manualslib.com manuals search engine When you put the cap back on, turn it to the right until
you hear at least three clicks. Make sure you fully install
the cap.
The diagnostic system can determine if the fuel
cap has been left off or improperly installed. This would
allow fuel to evaporate into the atmosphere. See
“Malfunction Indicator Lamp” in the Index.
NOTICE:
If you need a new cap, be sure to get the right
type. Your dealer can get one for you.
If you get
the wrong type,
it may not fit or have proper
venting, and your fuel tank and emissions system
might be damaged.
Checking Things Under the Hood
A CkmON’:
An electric fan under the hood can start up and
injure you even when the engine
is not running.
Keep hands, clothing and tools away from any
underhood electric fan.
Things that burn can get on hot engine parts and
start a fire. These include liquids like gasoline,
oil, coolant, brake fluid, windshield washer and
other fluids, and plastic or rubber. You or others
could be burned. Be careful not to drop or spill
things that will burn onto a hot engine.
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Downloaded from www.Manualslib.com manuals search engine When you lift the hood, you will see these items:
A. Battery E. Air Cleaner
B. Coolant Surge Tank E Engine Oil Fill Cap
C. Engine Oil Dipstick G. Brake Fluid Reservoir
D. Automatic Transmission Dipstick
H. Power Steering Fluid Reservoir
I. Windshield Washer Reservoir
J. Engine Fans
Before closing the hood, be sure all the filler caps are
on properly. Then pull the hood down and close it firmly.

Downloaded from www.Manualslib.com manuals search engine Engine Coolant
The cooling system in your vehicle is filled with new
DEX-COOL
TM (orange-colored, silicate-free) engine
coolant.
This coolant is designed to remain in your
vehicle for
5 years or 100,000 miles (166 000 km),
whichever occurs first.
The following explains your cooling system and how to
add coolant when it is low. If you have a problem with
engine overheating, see “Engine Overheating” in
the Index.
A 50/50 mixture of water and the proper coolant for
your Cadillac will:
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Give freezing protection down to -34°F (-37°C).
Give boiling protection up to 265
” F ( 129 O C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights and gages work as
they should.
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Downloaded from www.Manualslib.com manuals search engine What to Use
Use a mixture of one-half clean water (preferably
distilled) and one-half DEX-COOL
TM (orange-colored,
silicate-free) antifreeze that meets GM
Specification 6277M, which won’t damage aluminum
parts. Use GM Engine Coolant Supplement (sealer)
(GM
Part No. 3634621) with any complete coolant
change.
If you use this mixture, you don’t need to add
anything else.
I-
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 TM (orange-colored,
silicate-free) antifreeze.
NOTICE:
If you use an improper coolant mix, your engine
could overheat and be badly damaged. The
repair cost wouldn’t be covered by your
warranty. Too much water in the
mix can freeze
and crack the engine, radiator, heater core and
other parts.
If you have to add coolant more than four times a year,
have your dealer check your cooling system.
1
NOTICE:
If you use the proper coolant, you don’t have to
add extra inhibitors or additives which claim to
improve the system. These can be harmful.

Downloaded from www.Manualslib.com manuals search engine :: ’ 1 ,-
Checking Coolant
Turning the surge t engine and radiator are hot can allow steam and
scalding liquids to blow out and burn you badly.
Never turn the surge tank pressure cap
-- even a
little
-- when the engine and radiator are hot.
LOW
COOLANT
J
If this light comes on,
it means you’re low on
engine coolant.
See “Low Coolant
Light” in the Index.
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Downloaded from www.Manualslib.com manuals search engine Adding Coolant
If you need more coolant, add the proper mix at the
surge tank, but only when the engine is cool.
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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.
When replacing the pressure cap, make sure it is tight.
Surge Tank Pressure Cap
NOTICE:
The surge tank pressure cap is a 15 psi (105 kPa)
pressure-type cap and must be tightly installed to
prevent coolant loss and possible engine damage
from overheating.
When you replace the surge tank pressure cap, a GM cap
is recommended.
Thermostat
Engine coolant temperature is controlled by a thermostat
in the engine coolant system. The thermostat stops the
flow of coolant through the radiator until the coolant
reaches a preset temperature.
When you replace your thermostat, an
AC@ thermostat
is recommended.
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