2001 CADILLAC DEVILLE Owners Manual

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Have you recently changed brands of fuel?
If so, be sure to fuel your vehicle with quality fuel.
See ªFuelº in the Index. Poor fuel quality will cause
your engine not to run as efficiently as designed.
You may notice this as stalling after start
-up, stalling
when you put the vehicle into gear, misfiring, hesitation
on acceleration or stumbling on acceleration. (These
conditions may go away once the engine is warmed up.)
This will be detected by the system and cause the light
to turn on.
If you experience one or more of these conditions,
change the fuel brand you use. It will require at least
one full tank of the proper fuel to turn the light off.
If none of the above steps have made the light turn off,
have your dealer or qualified service center check the
vehicle. Your dealer has the proper test equipment and
diagnostic tools to fix any mechanical or electrical
problems that may have developed.Emissions Inspection and Maintenance Programs
Some state/provincial and local governments have or
may begin programs to inspect the emission control
equipment on your vehicle. Failure to pass this
inspection could prevent you from getting a
vehicle registration.
Here are some things you need to know in order to help
your vehicle pass an inspection:
Your vehicle will not pass this inspection if the
SERVICE ENGINE SOON or CHECK ENGINE
light is on or not working properly.
Your vehicle will not pass this inspection if the OBD
(on
-board diagnostic) system determines that critical
emission control systems have not been completely
diagnosed by the system. The vehicle would be
considered not ready for inspection. This can happen
if you have recently replaced your battery or if your
battery has run down. The diagnostic system is designed
to evaluate critical emission control systems during
normal driving. This may take several days of routine
driving. If you have done this and your vehicle still
does not pass the inspection for lack of OBD system
readiness, see your dealer or qualified service center to
prepare the vehicle for inspection.

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Oil Pressure Light
This light tells you if there
could be a problem with
your engine oil pressure.
The light goes on when you turn your key to ON. It goes
off once you start your engine. That's a check to be sure
the light works. If it doesn't come on, be sure to have
it fixed so it will be there to warn you if something
goes wrong.
When the light comes on and stays on, it means that
oil isn't flowing through your engine properly. You
could be low on oil and you might have some other
system problem.CAUTION:
Don't keep driving if the oil pressure is low.
If you do, your engine can become so hot that
it catches fire. You or others could be burned.
Check your oil as soon as possible and have
your vehicle serviced.
NOTICE:
Damage to your engine from neglected oil
problems can be costly and is not covered by
your warranty.

2-93
Security Light
For information regarding
this light, see ªTheft
Deterrent
-Systemº in
the Index.
Fog Lamp Light (If Equipped)
This light will come on
when the fog lamp button
is pressed. For more
information about the fog
lamps, see ªFog Lampsº in
the Index.
Lights On Reminder
United States Canada
(Analog Only)
This light comes on as a reminder that your headlamps
are on.
Cruise Control Light
This light comes on
whenever you set your
vehicle's cruise control.

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Fuel Gage
Analog (United States) Analog (Canada)
DigitalThe fuel gage shows approximately how much fuel is
in the tank. It works only when the ignition is in ON.
If the fuel supply gets down to approximately
three gallons (11.4 L) of fuel remaining in the tank,
the FUEL LEVEL LOW message will appear on the
Driver Information Center (DIC).
On the digital cluster, if the fuel is less than
approximately 1.2 gallons (4.7 L) the ªEº segment
on the gage will flash.
Here are a few concerns some owners have had about
the fuel gage. All of these situations are normal and do
not indicate that anything is wrong with the fuel gage:

At the gas station the gas pump shuts off before the
gage reads F.

GAL FUEL USED on the Driver Information Center
does not correspond exactly to the amount of fuel
remaining as shown on the fuel gage.

The gage may change when you turn, stop or
speed up.

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Fuel Data Display (Digital Cluster)
The fuel data display
tells you all you about
the fuel economy and
how far you can travel
with the fuel remaining.
The average fuel economy (AVG) display shows the
average miles per gallon.To reset the average fuel economy, press the INFO
button until the MPG AVG is displayed on the Driver
Information Center (DIC). Press and hold the INFO
RESET button until both the fuel data display and DIC
display reads 0.0.
The RANGE display shows how far the computer
thinks you can travel with the fuel that is in the tank.
The computer does not know what driving conditions
will be like for the rest of your trip, so the range is
estimated based on the recent fuel economy. Therefore,
the range reading may change as your driving habits
change. Going from city to highway driving may
increase the range reading.
If the range display shows LO, you should stop for
fuel as soon as possible.
On the analog cluster, fuel data can be obtained by
pressing the INFO button. See ªDriver Information
Centerº in the Index.

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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
INFO: Pressing this button up or down will display the
MILES RANGE (Analog Cluster), MPG AVG, MPG
INST, GAL FUEL USED, AVG MPH, TIMER,
BATTERY VOLTS, LF
-RF-LR-RR TIRE
(If Equipped), RPM TACHOMETER (Digital Cluster),
ENGINE OIL LIFE, TRANS FLUID LIFE, PHONE
(If Equipped), FEATURE PROGRAMMING and
Blank Display.
INFO RESET: Pressing this button will reset the
MPG AVG, GAL FUEL USED, MPH AVG, TIMER,
ENGINE OIL LIFE, TRANS FLUID LIFE, when each
mode is individually selected. For more information
about the trip odometer, see ªOdometerº in the Index.
ON/OFF: Pressing this button turns the Programming
and Personalization Features on and off. (FEATURE
PROGRAMMING must be displayed on the DIC to
begin actual programming.) This button also starts and
stops the timer.
MILES RANGE: (Analog Cluster Only.) This message
shows about how many miles you can drive without
refilling your fuel tank. Once the range drops below
40 miles (64 km) remaining, the display will
show LOW.

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MPG AVG (Reset): This message shows the
approximate fuel economy you have averaged since the
last time you reset the value. To reset the MPG AVG
(Average Fuel Economy), press the INFO button to
display the MPG AVG then press and hold the INFO
RESET button until 0.0 MPG AVG is displayed.
MPG INST: This message shows the instantaneous
fuel economy which varies with your driving conditions,
such as acceleration, braking and the grade of the road
being traveled. The INFO RESET button does not
function in this mode.
GAL FUEL USED (Reset): This message shows how
much fuel has been used since the last reset. To learn
how much fuel is used from a new starting point, press
the RESET button while the GAL FUEL USED is
displayed in the DIC.
AVG MPH (Reset): This message shows the average
speed you have traveled at since the last time you reset
the value. To reset the value, press the INFO button to
display AVG MPH then press and hold the INFO
RESET button until 0.0 AVG MPH is displayed.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 INFO button to display TIMER.
Each of the fields for the hours, minutes and seconds are
two numeric digits.
Once TIMER 00:00:00 is displayed, press the ON/OFF
button to start the timing feature. Press the ON/OFF
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 INFO RESET button until the display reads TIMER
00:00:00. Press the INFO button to exit from the
TIMER display.
BATTERY VOLTS: This message shows the current
battery voltage. If the voltage is normal the display will
show BATTERY VOLTS OK. If the voltage drops
below 10.5 volts, the display will show BATTERY
VOLTS LOW. If the voltage is above 16 volts, the
display will show BATTERY VOLTS HIGH. If the
display shows the high or low message, you will need
to have your battery checked. See ªDriver Information
Center (DIC) Messagesº in the Index for
more information.

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LF-RF-LR-RR TIRE (If Equipped): On vehicles
equipped with the Tire Pressure Monitor, this message
shows the tire pressure for each tire (left front, right
front, left rear and right rear). Pressing the INFO button
will scroll through the tire pressure for each of the
four tires, such as:

34 PSI LF TIRE OK or

234 kPa LF TIRE OK
If a tire pressure is below 24 PSI (165 kPa) or above
36 PSI (248 kPa), the message will appear as shown
above except it will show TIRE LOW or TIRE HIGH
as appropriate. If desired, the tire pressure information
can be programmed not to appear when using the
INFO button to scroll through the DIC displays.
See ªVehicle Programming and Personalization
Featuresº in the Index.
If a low or high tire pressure is detected by the system
while driving, a CHECK TIRE PRESSURE message
will appear in the display. If this occurs, press the
INFO button to scroll to the tire(s) with a low or high
pressure condition. See ªDriver Information Center
(DIC) Messagesº in the Index for more information.ENGINE OIL LIFE (Reset): Press the INFO button
to display ENGINE OIL LIFE, then press and hold the
INFO RESET button until 100% ENGINE OIL LIFE is
displayed. (This only needs to be reset after you have
had the oil changed.)
TRANSMISSION FLUID LIFE MONITOR: Under
normal conditions, the rate of deterioration of the
transmission fluid is slow. See the Maintenance
Schedule booklet for proper fluid and change intervals.
Press the INFO button to display TRANS FLUID LIFE,
then press and hold the INFO RESET button until
100% TRANS FLUID LIFE is displayed. (This only
needs to be reset after you have had the fluid changed.)
ENG/MET: Press this button to display information in
the English (miles) or metric (kilometers) system.