1996 CADILLAC DEVILLE engine overheat

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STARTING DISABLED DUE TO THEFT SYSTEM
REMOVE IGNITION KEY
- 33: This message will
appear when the Personalized Automotive Security
System (PASS-Key
11) senses that an improper ignition
key is being used to try to start
the vehicle. Check the
ignition key for damage. If
it is damaged, it may need to
be replaced. If you see no damage, clean the pellet
contacts
with a soft cloth or napkin. Remove the ignition
key and wait for the
DTC to display WAIT 3 MINUTES.
The instrument panel cluster will then run a timer and change the messages to WAIT
2 MINUTES, WAIT
1 MINUTE and then START CAR. When the START
CAR message is displayed, try again to start the engine.
STOP ENGINE ENGINE OVERHEATED - 42: This
message will appear when the engine has overheated. Stop and turn the engine off immediately to avoid severe
engine damage. See “Engine Overheating” in
the Index.
this message appears while the engine is running, stop
the engine and do not operate it until the cause
of low
oil pressure is corrected. Severe damage to
the engine
can result.
STOP ENGINE LOW OIL PRESSURE - 35: If
THEFT SYSTEM PROBLEMlCAR MAY NOT
RESTART
- 34: This message means there is a problem
in the Personalized Automotive Security System
(PASS-Key 11).
A fault has been detected in the system
which means that
the PASS-Key I1 system is disabled
and is not protecting
the vehicle. The vehicle usually
restarts however, you may want to take your vehicle to a
proper service center before turning off the engine.
TOP SPEED FUEL CUT-OFF - 111: This message
will appear when the PCM senses that the maximum
speed for your Cadillac has been reached. The speed
of
your vehicle will decrease several mph as the fuel
supply is cutoff. This allows your vehicle to stay in a
stable operating range.
TRACTION READY - 91: This message informs the
driver that the traction control system is available. This occurs when the traction on/off button in the glove box
has been returned to
an on position (pressing the button
once turns the traction control system off; pressing the
button again turns the system back on).
TRACTION OFF - 89: This message will be displayed
after
the traction control has been turned off.
TRANS FLUID RESET - 48: With the engine not
running and the ignition on, press and hold the
OFF and
rear defog buttons until the TRANS FLUID RESET
meGage appears on the DIC (between 5 and 20 seconds).
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Downloaded from www.Manualslib.com manuals search engine lhrn Signals When Towing a nailer
When you tow a trailer, your vehicle may need a
different
turn signal flasher and extra wiring. Check
with your Cadillac dealer. The green
arrows on your
instrument panel will flash whenever you signal a
turn
or lane change. Properly hooked up, the trailer lamps
will
also flash, telling other drivers you’re about to turn,
change lanes or stop.
When towing a trailer, the green arrows on your
instrument panel will flash for turns even
if the bulbs on
the trailer
are burned out. Thus, you may think drivers
behind you are seeing your signal when they are not. It’s
important to check occasionally to be sure the trailer
bulbs are still working.
Driving On Grades
Reduce speed and shift to a lower gear before you start
down a long or steep downgrade.
I€ you don’t shift
down, you might have to use your
brakes so much that
they would get hot and no longer work well.
On a long uphill grade,
shift down and reduce your
speed to around
45 mph (70 b/h) or less to reduce the
possibility
of engine and transaxle overheating.
If your vehicle weighs more
than 1,OOO lbs. (450 kg),
you may want to drive in
THIRD (3) instead of
OVERDRIVE (@).
4-38

Downloaded from www.Manualslib.com manuals search engine Engine Overheating
You will find an ENGINE COOLANT HOT-IDLE
ENGINE message
or a STOP ENGINE ENGINE
OVERHEATED message on the DIC. There is also an
engine temperature warning light
on the instrument
panel. See “Engine Temperature Warning Light” in the
Index.
Overheated Engine Protection Operating
Mode
Y
Should a low coolant condition exist and the message
STOP ENGINE
ENGINE OVERHEATED is displayed,
an overheat protection mode which alternates firing
groups
of four cylinders helps prevent engine damage.
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.
I 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 may be
severely degraded. Change the
oil and reset the
oil life indicator. See “Engine Oil, When to
~ Change” in the Index.
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Downloaded from www.Manualslib.com manuals search engine If Steam Is Coming From Your Engine
A CAUTION:
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 hear steam coming
from
it. Just turn it off and get everyone away
from the vehicle until it cools down. Wait until
there
is no sign of steam or coolant before
opening 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.
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.
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Downloaded from www.Manualslib.com manuals search engine If No Steam Is Coming From Your Engine
If you get the overheat warning but see or hear no
steam, the problem may not
be too serious. Sometimes
the engine can get a little too hot when you:
Climb a long hill on a hot day.
Stop after high-speed driving.
0 Idle for long periods in traffic.
Tow a trailer.
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If you get the overheat warning with no sign of steam,
try this for
a minute or so:
1. Turn off your air conditioner.
2. Dial temperature control to the highest heat setting and open the window, as necessary.
3. If you’re in a traffic jam, shift to NEUTRAL (N);
otherwise, shift to the highest gear while
driving
-- OVERDRIVE (a) or THIRD (3).
If you no longer have the overheat warning, you can
drive. Just to be safe, drive slower for about 10 minutes,
If the warning doesn’t come back on, you can drive
nonnally.
If the warning continues, pull over, stop
and park your
vehicle right away.
If there’s still no sign of steam, you can idle the engine
for two
or three minutes while you’re parked, to see if
the warning stops.
But then, if you still have the
warning,
turn off the engine and get everyone out of the
vehicle
until it cools down. Also, see “Overheated
Engine Protection Operating Mode” listed previously in
this section.
You may decide not to lift the hood but to get &mice
help right away.
5-17

Downloaded from www.Manualslib.com manuals search engine I 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.
How to Add Coolant to the Coolant Surge
Tank
If you haven? found a problem yet, but the coolant level
isn’t at
the proper level (2.5 inches (60 mm) below the
base
of the fill neck), add a 50/50 mixture of clean
water (preferably distilled) and DEX-COOL TM
antifreeze 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.)
I 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 coolantsurge tank pressure cap to cool if you
ever
have to turn the pressure cap.
5-20

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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 TM antifreeze.
5-21
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Downloaded from www.Manualslib.com manuals search engine ~~~ ~
~~ ~ NOTICE:
When
the compact spare is installed, don’t take
your vehicle through an automatic car wash with
guide rails. The compact spare can get caught on
the rails. That can damage the tire and wheel,
and maybe other parts
of your vehicle.
Don’t use your compact spare on other vehicles.
And don’t mix your compact spare tire or wheel with
other wheels
or tires. They won’t fit. Keep your spare
tire and its wheel together.
NOTICE:
Tire chains won’t fit your compact spare. Using
them can damage
your vehicle and can damage
the chains too. Don’t use tire chains on
your
compact spare.
~ ~~ ~~~ ~
~~
If You’re Stuck: In Sand, Mud, Ice or
Snow
What you don’t want to do when your vehicle is stuck
is to spin your wheels too fast. The method known as
“rocking” can help you get out when you’re stuck, but
you must use caution.
A CAUTION:
If you let your tires spin at high speed, they can
explode, and you or others could be injured. And,
the transaxle or other parts
of the vehicle can
overheat. That could
cause an engine compartment
fire or other damage. When
you’re stuck, spin the
wheels
as little as possible. Don’t spin the wheels
above
35 mph (55 kdh) as shown on the
speedometer.
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