fuel CADILLAC DEVILLE 1999 7.G User Guide

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2-73 Engine Coolant Temperature Gage
This gage shows the engine
coolant temperature. If
the gage pointer moves into
the red area, the engine is
too hot.
Analog Cluster
That reading means the same thing as the warning
light
-- the engine coolant has overheated. See
ªEngine Overheatingº in the Index.
Malfunction Indicator Lamp
(Service Engine Soon Light)
Your vehicle is equipped
with a computer which
monitors operation of the
fuel, ignition and emission
control systems.
This system is called OBD II (On
-Board
Diagnostics
-Second Generation) and is intended to
assure that emissions are at acceptable levels for the life
of the vehicle, helping to produce a cleaner
environment. The SERVICE ENGINE SOON light
comes on and a chime will sound to indicate that there is
a problem and service is required. Malfunctions often
will be indicated by the system before any problem is
apparent. This may prevent more serious damage to
your vehicle. This system is also designed to assist
your service technician in correctly diagnosing
any malfunction.

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NOTICE:
If you keep driving your vehicle with this light
on, after a while, your emission controls may not
work as well, your fuel economy may not be as
good and your engine may not run as smoothly.
This could lead to costly repairs that may not be
covered by your warranty.
NOTICE:
Modifications made to the engine, transaxle,
exhaust or fuel system of your vehicle or the
replacement of the original tires with other than
those of the same Tire Performance Criteria
(TPC) can affect your vehicle's emission controls
and may cause the light to come on.
Modifications to these systems could lead to
costly repairs not covered by your warranty. This
may also result in a failure to pass a required
Emission Inspection/Maintenance test.
This light should come on, as a check to show you it is
working, when the ignition is on and the engine is not
running. If the light doesn't come on, have it repaired.
This light will also come on during a malfunction in one
of two ways:

Light Flashing
-- A misfire condition has been
detected. A misfire increases vehicle emissions and
may damage the emission control system on your
vehicle. Dealer or qualified service center diagnosis
and service may be required.

Light On Steady
-- An emission control system
malfunction has been detected on your vehicle.
Dealer or qualified service center diagnosis and
service may be required.
If the Light Is Flashing
The following may prevent more serious damage to
your vehicle:

Reducing vehicle speed.

Avoiding hard accelerations.

Avoiding steep uphill grades.

If you are towing a trailer, reduce the amount of
cargo being hauled as soon as it is possible.

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If the light stops flashing and remains on steady, see ªIf
the Light Is On Steadyº following.
If the light continues to flash, when it is safe to do so,
stop the vehicle. Find a safe place to park your vehicle.
Turn the key off, wait at least 10 seconds and restart the
engine. If the light remains on steady, see ªIf the Light
Is On Steadyº following. If the light is still flashing,
follow the previous steps, and drive the vehicle to your
dealer or qualified service center for service.
If the Light Is On Steady
You may be able to correct the emission system
malfunction by considering the following:
Did you recently put fuel into your vehicle?
If so, reinstall the fuel cap, making sure to fully install
the cap. See ªFilling Your Tankº in the Index. The
diagnostic system can determine if the fuel cap has been
left off or improperly installed. A loose or missing fuel
cap will allow fuel to evaporate into the atmosphere. A
few driving trips with the cap properly installed should
turn the light off.
Did you just drive through a deep puddle of water?
If so, your electrical system may be wet. The condition
will usually be corrected when the electrical system
dries out. A few driving trips should turn the light off.Are you low on fuel?
As your engine starts to run out of fuel, your engine may
not run as efficiently as designed since small amounts of
air are sucked into the fuel line causing a misfire. The
system can detect this. Adding fuel should correct this
condition. Make sure to install the fuel cap properly. See
ªFilling Your Tankº in the Index. It will take a few
driving trips to turn the light off.
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.

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2-77 Fuel Gage
Digital Cluster Analog Cluster
The fuel gage shows approximately how much fuel is in
the tank. It works only when the ignition is in RUN.On the digital cluster, if the fuel level is within
approximately 2 gallons (7.6 L) of being full, the letter
ªFº is shown. If the fuel supply gets down to
approximately 3 gallons (11.4 L), the number ª3º will
be displayed on the fuel gage, and the FUEL LEVEL
LOW message will appear on the Driver Information
Center (DIC). (On the analog fuel gage, the FUEL
LEVEL LOW message will also appear.) If the fuel
level is less than approximately 3 gallons (11.4 L) from
being empty, the letter ªEº is shown.
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.

It takes more (or less) gas to fill the tank than the
gage said. For example, the gage read 8 GALLONS
(30 L), but it took more (or less) than the tank's
remaining capacity to fill it.

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

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2-78 Fuel Data Panel
Digital Cluster
For vehicles equipped with an analog cluster (not
shown), fuel data can be obtained by pressing the
SKIP INFO button. See ªAnalog Control Buttonsº
in the Index.
The fuel data panel tells you all you need to know about
the fuel economy and how far you can travel with the
fuel remaining.Press the AVG button to display the average mile per
gallon (AVG MPG). You can also display it in metric
units by pressing the ENG MET button.
When AVG MPG is selected, the total distance is
divided by the total fuel used.
When the INST button (Instantaneous Fuel Economy) is
selected, you will see what the fuel economy is at that
instant. The computer takes a new reading twice every
second. It will show economy up to 70 miles per gallon
(or 2 L per 100 km).
To reset the average fuel economy, press the
INFORMATION SKIP button until the AVG MPG is
displayed on the Driver Information Center (DIC). Press
and hold the RESET NO button until both the fuel data
center 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.

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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
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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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
RESET NO button until the display reads TIMER
00:00:00. Press the INFORMATION SKIP button to
exit from the TIMER function.
RESET NO: Pressing this button will reset the MPG
AVG, GAL FUEL USED, AVG MPH and OIL LIFE
LEFT. Pressing RESET NO 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.MPG AVG (Reset): Press the INFORMATION SKIP
button to display the MPG AVG (Average Fuel
Economy), then press and hold the RESET NO
button until 0.0 MPG AVG is displayed.
GAL FUEL USED (Reset): Press the INFORMATION
SKIP button to display the GAL FUEL USED on the
DIC, then press and hold the RESET NO button
until 0.0 GAL FUEL USED is displayed.
AVG MPH (Reset): Press the INFORMATION
SKIP button to display the AVG MPH (Average Speed),
then press and hold the RESET NO button until
0.0 AVG MPH is displayed.
OIL LIFE LEFT (Reset): Press the INFORMATION
SKIP button to display the OIL LIFE LEFT, then press
and hold the RESET NO button until 100% OIL LIFE
LEFT is displayed. (This only needs to be reset after you
have had the oil changed.)

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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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MPG AVG (Reset): Press the SKIP INFO button to
display the MPG AVG (Average Fuel Economy), then
press and hold the NO INFO RESET button until
0.0 MPG AVG is displayed.
GAL FUEL USED (Reset): Press the SKIP INFO
button to display the GAL FUEL USED on the DIC,
then press and hold the NO INFO RESET button until
0.0 GAL FUEL USED is displayed.
AVG MPH (Reset): Press the SKIP INFO button to
display the AVG MPH (Average Speed), then press and
hold the NO INFO RESET button until 0.0 AVG MPH
is displayed.
OIL LIFE LEFT (Reset): Press the SKIP INFO button
to display the OIL LIFE LEFT, then press and hold the
NO INFO RESET button until 100% OIL LIFE LEFT is
displayed. (This only needs to be reset after you have
had the oil changed.)DIC Messages
These messages will appear if there is a problem sensed
in one of your vehicle's systems. Vehicles that are first
sold in Canada will have a number after each message.
This number helps to identify the message which is only
displayed in English.
APPLY BRAKE TO SHIFT
- 46: This message will
appear if your vehicle is in PARK (P) for about 15
seconds and the brake is not pressed in. To remove this
message from the DIC display, hold the OFF and the
blue (cooler) buttons on the digital cluster control panel
for about five seconds. On the analog climate control
panel, press the OFF button (next to the MODE button)
and the down arrow on the PASS TEMP button for
about five seconds. Hold the same two buttons to
display the message again.
BATTERY NOT CHARGING
- 7: This message will
appear if the battery is not being charged. Have the
electrical system checked by your dealership at your
earliest convenience.

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CHANGE TRANS FLUID - 47: This message will
appear when it is time to replace the transaxle fluid. See
the Maintenance Schedule booklet for the proper fluid
and change intervals.
CHECK BRAKE FLUID
- 37: This message will
display if the ignition is in RUN to inform the driver that
the brake fluid level is low. Check the brake reservoir
level and add fluid as needed. Have the brake system
serviced by a technician as soon as possible. If the brake
warning light is on, follow the directions in that part.
CHECK COOLANT LEVEL
- 2: This message
will appear when there is a low level of engine coolant.
Have the cooling system serviced by a technician as
soon as possible.
CHECK FUEL GAUGE
- 39: This message will
appear when the fuel supply is less than four gallons
(15.2 L) and the display is turned off (digital clusters
only). A single chime will also sound when this message
is displayed.
CHECK GAS CAP
- 61: This message will appear if
the gas cap has not been fully tightened. You should
recheck your gas cap to ensure that it's fully tightened.CHECK OIL LEVEL
- 36: For correct operation of
the low oil sensing system, your vehicle should be on a
level surface. A false CHECK OIL LEVEL message
may appear if the vehicle is parked on grades. The oil
level sensing system does not check for actual oil level
if the engine has been off for a short period of time, and
the oil level is never sensed while the engine is running.
If the CHECK OIL LEVEL message appears, and your
vehicle has been parked on level ground with the engine
off for at least 30 minutes, the oil level should be
checked by observing the oil dipstick. Prior to checking
the oil level, be sure the engine has been off for five
minutes and your vehicle is on a level surface. Then
check the dipstick and add oil if necessary. See
ªEngine Oilº in the Index.
CHECK WASHER FLUID
- 25: This message will
appear for several seconds indicating that you need
washer solvent.
CRUISE ENGAGED
- 43: This message will appear for
a few seconds when you select a speed at which to cruise.
DOOR AJAR
- 141: A door other than the driver's
door is open or ajar when this message appears. The
vehicle's engine must be running and the transaxle not
in PARK (P) for this message to display. A chime
will also sound when the vehicle's speed is greater than
5 mph (8 km/h).