1999 CADILLAC DEVILLE oil temperature

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2-22 To Use the Engine Coolant Heater
1. Turn off the engine.
2. Open the hood and unwrap the electrical cord.
The electrical cord is located on the driver's side of
the engine, behind the transaxle dipstick/fluid fill
location (C) and next to the engine.
3. Plug it into a normal, grounded 110
-volt AC outlet.
CAUTION:
Plugging the cord into an ungrounded outlet
could cause an electrical shock. Also, the wrong
kind of extension cord could overheat and cause
a fire. You could be seriously injured. Plug the
cord into a properly grounded three
-prong
11 0
-volt AC outlet. If the cord won't reach, use a
heavy
-duty three-prong extension cord rated for
at least 15 amps.
4. Before starting the engine, be sure to unplug
and store the cord as it was before to keep it
away from moving engine parts. If you don't, it
could be damaged.
How long should you keep the coolant heater plugged
in? The answer depends on the outside temperature, the
kind of oil you have, and some other things. Instead of
trying to list everything here, we ask that you contact
your dealer in the area where you'll be parking your
vehicle. The dealer can give you the best advice for that
particular area.

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2-79
Driver Information Center (DIC)
This display gives you the status of many of your
vehicle's systems. The DIC is also used to display driver
personalization features and warning/status messages.
DIC Controls and Displays
Digital Control Buttons (DeVille and DeVille
d'Elegance Only)
DISPLAY ON/OFF: Pressing this button will turn off
the DIC, Electronic Climate Control (ECC), fuel data
center, the fuel gage, trip odometer and odometer. While
the displays are off, pressing the INFORMATION SKIP
button will only turn on the DIC. If the TRIP YES
button is pressed or the fuel level falls below four
gallons (15.2 L), all of the displays will come back on.
ENG/MET: You can change the display from English
(miles) to metric (kilometers) by pressing this button.
The same button also changes other readings (like
temperature, fuel and odometer).
TRIP YES: By using this button, you can tell how far
you've gone since you last set the trip display back to
zero. To reset, press and hold the button until zeros
appear. If your vehicle is domestic, the trip odometer
will return to zero after 999.9 miles (1 609 km). If your
vehicle is Canadian, the trip odometer will return to zero
after 1 999.9 km (1,242 miles).
INFORMATION SKIP: Pressing this button
repeatedly will display the MPG AVG, GAL FUEL
USED, AVG MPH, ENGINE RPM, BATTERY
VOLTS, COOLANT TEMP and OIL LIFE LEFT.

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2-81
Analog Control Buttons (DeVille Concours Only)
YES TRIP RESET: By using this button, you can tell
how far you've gone since you last set the trip display
back to zero. To reset, press and hold the button until
zeros appear. If your vehicle is domestic, the trip
odometer will return to zero after 999.9 miles
(1 609 km). If your vehicle is Canadian, the trip
odometer will return to zero after 1 999.9 km
(1,242 miles).
NO INFO RESET: Pressing this button will reset the
MPG AVG, GAL FUEL USED, AVG MPH and OIL
LIFE LEFT. Pressing NO INFO RESET when a
non
-resettable display appears will cause a ªrecallº
mode to occur. When this happens, all DIC warning
messages that have been displayed since the ignition key
was turned to RUN will redisplay. If no messages were
displayed, a MONITORED SYSTEMS OK message
will appear.SKIP INFO: Pressing this button repeatedly will
display the RANGE, MPG AVG, MPG INST, GAL
FUEL USED, AVG MPH, BATTERY VOLTS and
OIL LIFE LEFT.
TIMER: This feature is like a stopwatch, in that
you can clock the time it takes to get from one point
to another.
To operate, press the TIMER button until TIMER OFF
00:00:00 is displayed on the DIC. Each of the fields for
the hours, minutes and seconds are two numeric digits.
Once TIMER OFF 00:00:00 is displayed, press the
TIMER button to start the timing feature. Press the
TIMER button again to stop it. If you will be starting
and stopping your vehicle
-- during a trip for
instance
-- the TIMER feature will automatically start
timing where it left off when you last stopped. To reset
it, press and hold the NO INFO RESET button until the
display reads TIMER 00:00:00. Press the NO INFO
RESET button to exit from the TIMER function.
ENG/MET: You can change the display from English
(miles) to metric (kilometers) by pressing this button.
The same button also changes other readings (like
temperature, fuel and odometer).

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2-86
ICE POSSIBLE - 13: This message appears when
the outside air temperature is cold enough to create icy
road conditions.
LOW
-REFRIG A/C OFF - 12: This message means
that the air conditioning system detects a refrigerant
level that is low enough to cause damage to the air
conditioning compressor. To avoid damage, the air
conditioning compressor automatically turns off and the
electronic climate control system will automatically
switch from AUTO to ECON and remain there.
Have the air conditioning system serviced if this
message appears.
MONITORED SYSTEMS OK
- 1: This message only
appears in the ªrecallº mode by pressing the RESET NO
(NO INFO RESET) button. It lets you know that no
other messages are stored or currently active.
OIL PRESSURE LOW STOP ENGINE
- 35: If 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. A multiple chime will also sound when this
message is displayed.
OPTIONS NOT SET
- 99: This message will display if
a fault has occurred in your vehicle's memory. See your
dealership for service.PROGRAM PASS KEY
- 31: This warning message
displays when the PASS
-Key
II pellet information has
not been programmed into your vehicle. See your
dealership for service.
PHONE NOT PRESENT
- 126: This message will
appear when the steering wheel controls for the optional
phone system are activated but the phone is not plugged
into the vehicle. Make sure your phone is plugged in. If
your phone appears to be connected, see your dealership
for service.
REMOVE KEY
- 70: This message will appear when
the Personalized Automotive Security System
(PASS
-Key
II) is unable to read the pellet on the
ignition key or an improper key pellet has been inserted.
This message typically appears following the display of
STARTING DISABLED, REMOVE KEY. The
instrument panel cluster will then run a timer and
change the messages to WAIT 3 MINUTES, WAIT 2
MINUTES, WAIT 1 MINUTE and then START CAR.
When the REMOVE KEY message is displayed, remove
the ignition key. 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 before inserting the key back into the ignition.
Have your vehicle serviced if the message still appears.

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2-95
Trip Computer
Continual Variable Road Sensing
Suspension (CVRSS) (DeVille
Concours Only)
The CVRSS automatically adjusts the ride of your
vehicle. Automatic ride control is achieved through a
computer controller used to control and monitor the
suspension system. The computer controller receives
inputs from various sensors to determine the proper
system response. If the computer controller detects a
problem within the system, the DIC will display a
SERVICE RIDE CONTROL message. If this message
appears, have your vehicle serviced at your dealership.
Oil Life Indicator
This feature lets you know when to change the engine
oil. It's based on the engine oil temperatures and your
driving patterns. To see the display, press the
INFORMATION SKIP (SKIP INFO) button until XX
OIL LIFE LEFT appears. If you see 99% OIL LIFE
LEFT, 99 percent of your current oil life remains.

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6-14
As shown in the chart, SAE 10W-30 is best for your
vehicle. However, you can use SAE 5W
-30 if it's going
to be colder than 60F (16C) before your next oil
change. When it's very cold, you should use SAE
5W
-30. These numbers on an oil container show its
viscosity, or thickness. Do not use other viscosity oils,
such as SAE 20W
-50.
NOTICE:
Use only engine oil with the American Petroleum
Institute Certified For Gasoline Engines
ªStarburstº symbol. Failure to use the
recommended oil can result in engine damage not
covered by your warranty.
GM Goodwrench
oil meets all the requirements for
your vehicle.
If you are in an area where the temperature falls below
-20F (-29C), consider using either an SAE 5W-30
synthetic oil or an SAE 0W
-30 oil. Both will provide
easier cold starting and better protection for your engine
at extremely low temperatures.
Engine Oil Additives
Don't add anything to your oil. Your dealer is ready to
advise if you think something should be added.
When to Change Engine Oil
Your vehicle has a computer that lets you know when to
change your engine oil. This is not based on mileage,
but on engine revolutions and engine operating
temperature. When the computer has calculated that the
oil needs changing, the Oil Life Indicator will indicate
that a change is necessary. The mileage between oil
changes will vary depending on how you drive your
vehicle
-- usually between 3,000 miles (5 000 km) and
7,500 miles (12 500 km) since your last oil change.
Under severe conditions, the indicator may come on
before 3,000 miles (5 000 km). Never drive your vehicle
more than 7,500 miles (12 500 km) or 12 months
(whichever occurs first) without an oil change.
The system won't detect dust in the oil. So, if you drive
in a dusty area, be sure to change your oil every
3,000 miles (5 000 km) or sooner. Remember to reset
the Oil Life Indicator whenever the oil is changed.

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6-19
Automatic Transaxle Fluid
When to Check and Change
A good time to check your automatic transaxle fluid
level is when the engine oil is changed.
Change both the fluid and filter every 50,000 miles
(83 000 km) if the vehicle is mainly driven under one or
more of these conditions:

In heavy city traffic where the outside temperature
regularly reaches 90F (32C) or higher.

In hilly or mountainous terrain.

When doing frequent trailer towing.

Uses such as found in taxi, police or delivery service.

Use such as limousine service.
If you do not use your vehicle under any of these
conditions, the fluid and filter do not require change
until the message CHANGE TRANS FLUID appears on
the Driver Information Center.
See ªScheduled Maintenance Servicesº in the
Maintenance Schedule booklet.
How to Check
Because this operation can be a little difficult, you may
choose to have this done at the dealership service department.
If you do it yourself, be sure to follow all the
instructions here, or you could get a false reading on
the dipstick.
NOTICE:
Too much or too little fluid can damage your
transaxle. Too much can mean that some of the
fluid could come out and fall on hot engine parts
or exhaust system parts, starting a fire. Be sure to
get an accurate reading if you check your
transaxle fluid.
Wait at least 30 minutes before checking the transaxle
fluid level if you have been driving:

When outside temperatures are above 90F (32C).

At high speed for quite a while.

In heavy traffic
-- especially in hot weather.

While pulling a trailer.

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6-23
Engine Coolant
The cooling system in your vehicle is filled with
DEX
-COOL
engine coolant. This coolant is designed
to remain in your vehicle for 5 years or 150,000 miles
(240 000 km), whichever occurs first, if you add only
DEX
-COOL
extended life coolant.
The following explains your cooling system and how to
add coolant when it is low. If you have a problem with
engine overheating, see ªEngine Overheatingº in
the Index.
A 50/50 mixture of clean, drinkable water and
DEX
-COOL
coolant will:

Give freezing protection down to
-34F (-37C).

Give boiling protection up to 265F (129C).

Protect against rust and corrosion.

Help keep the proper engine temperature.

Let the warning lights and gages work as
they should.
NOTICE:
When adding coolant, it is important that you use
only DEX
-COOL (silicate-free) coolant.
If coolant other than DEX-COOL is added to the
system, premature engine, heater core or
radiator corrosion may result. In addition, the
engine coolant will require change sooner
-- at
30,000 miles (50 000 km) or 24 months,
whichever occurs first. Damage caused by the use
of coolant other than DEX
-COOL is not
covered by your new vehicle warranty.