1994 CADILLAC DEVILLE cooling

Downloaded from www.Manualslib.com manuals search engine A CAUTION
It can be dangerous to drive with the trunk Iid open because
carbon monoxide
(CO) gas can come into your vehicle. You can’t
see
or smell CO. It can cause unconsciousness and even death.
If you must drive with the trunk lid open or if electrica1 wiring
or other cable connections must pass through the seal between
the body and the trunk
lid
Make sure all windows are shut.
Turn the fan on your heating or cooling system to its highest
speed with the setting on between
65 F (18” C) to 85 F
(29O C). That will force outside air into your vehicle. See
“Comfort Controls” in the Index.
See ‘4Engine Exhaust” in. the Index.
THEFT
Vehicle theft is big business, especially in some cities. Although your
we put on it can make it impossible to steal. However, there are ways
you
can help.
__ Cadillac has a number of theft deterrent features, we know that nothing
Key in the ignition
If you walk away from your vehicle with the keys inside, it’s an easy target
When
you park your Cadillac and open the driver’s door, you’ll hear a
chime reminding you to remove your key
fr9m the ignition and take it
with you. Always
do this. Your steering wheel will be locked, and so will
your ignition and transaxle. And remember to lock the doors.
~ for joy riders or professional thieves -- so don’t do it.
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Downloaded from www.Manualslib.com manuals search engine Temperature
To select the
temperature
you want,
push the blue button
for a cooler setting and
the red button for a
warmer setting. The
temperature setting
will be displayed on
the digital screen.
You can select temperatures from
65’F (18°C) to 85°F (29’C). And, at
each end,
you may choose 60” F (16’C), for maximum cooling, and 90 ” F
(33 ’ C), for maximum heating. We recommend when first getting familiar
with your vehicle, select
75°F (24’C). You may find that your own
personal comfort requires a slightly higher or lower setting. Once you set
the temperature, the system will automatically maintain the
set
temperature.
ECON
With this setting it’s all automatic, but the air conditioning compressor
does not operate and it won’t remove humidity from the air. However,
the system will try to keep the air at the selected temperature. Use this
setting
in cold or cool weather to save fuel.
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If it’s warm outside and you need to cool the air, use the “AUTO” setting.

Downloaded from www.Manualslib.com manuals search engine HILL AND MOUNTMN ROADS
Driving on steep hills or mountains is different from driving in flat or
rolling terrain.
If you drive regularly in steep country, or if you’re planning to visit there,
here are some tips that can make your trips safer and more enjoyable.
Keep your vehicle in good shape. Check all fluid levels and also the
brakes, tires, cooling system and transaxle. These parts can work hard
on mountain roads.
Know how to go down hills. The most important thing to know is this:
let your engine do some of the slowing down. Shift to a lower gear
when you go down a steep or long hill.
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Downloaded from www.Manualslib.com manuals search engine 3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store the chocks.
Engine Cooling When Trailering
Your cooling system may temporarily overheat during severe operating
conditions such as;
Climbing grades steeper than 4% at ambient temperatures above
90” Fahrenheit (32’Celsius) with a loaded vehicle and trailer.
Stopping after high-speed driving.
Idling for long periods in stop and go traffic.
If “ENGINE
HOT A/C COMPRESSOR OFF” message appears on the
Driver Information Center, do not be alarmed. This is a normal function
designed to reduce the load on the engine and cooling system you can
continue to drive your vehicle.
If “ENGINE COOLANT
HOT” message appears on the Driver
Information Center, pull off to the side of
the road as soon as it is safe to
do so. When the vehicle is at a complete stop, shift the transmission
selector to
P (Park) and allow the engine to idle. Do not turn off the
engine or increase engine speed above a normal idle. Within
two or three
minutes the system should cool sufficiently to allow
A/C operation to
resume. At that
time resume driving at a reduced speed. Return to
normal driving after
10 minutes if the “ENGINE COOLANT HOT”
message
is not displayed.
Maintenance when Trailer Towing
Your vehicle will need service more often when you’re pulling a trailer.
See
the Maintenance Schedule for more on this. Things that are
especially important
in trailer operation are automatic transaxle fluid
(don’t overfill), engine oil, belts, cooling system, and brake wear. Each of
these is covered
in this manual, and the Index will help you find them
quickly. If you’re trailering, it’s a good idea to review these sections
before
you start your trip.
Check periodically
to see that all hitch nuts and bolts are tight.
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Downloaded from www.Manualslib.com manuals search engine COOLING SYSTEM
When you decide it’s safe to lift the hood, here’s what you’ll see:
Coolant recovery tank
Radiator pressure cap
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 eIectric fan.
If the coolant inside the coolant recovery tank is boiling, don’t do
anything else until
it cools down.

Downloaded from www.Manualslib.com manuals search engine The coolant level should be at or above the FULL COLD marking on the
coolant recovery tank.
If it isn’t, you may have a coolant leak somewhere
in the cooling system.
NOTICE:
Engine damage from running your engine without coolant isn’t
covered by your warranty.
If there seems to be no leak, 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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Downloaded from www.Manualslib.com manuals search engine 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 When the correct fluid level is obtained, push the dipstick back in all -
the way.
ENGINE COOLANT 7
The following explains your cooling system and how to add coolant when (. I
it is low. If you have a problem with engine overheating, see “Engine
Overheating” in the Index.
The proper coolant for your Cadillac will:
0 Give freezing protection down to -34°F (-37OC) .
0 Give boiling protection up to 262 F (128 C) .
0 Prote-ct against rust and corrosion.
Help keep the proper engine temperature.
Let the warning-lights work as they shoula.
What to Use
Use a mixture of one-half clean water (preferably distilled) and one-half
antifreeze that meets
“GM specification 1825-M,” which won’t damage
aluminum parts. You can also use
a recycled coolant conforming to GM
Specification
1825-M with a complete coolant flush and refill. Use GM
Engine Coolant Supplement (sealer) with any complete coolant change.
If you use this mixture, you don’t need to add anything else.
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