2002 CADILLAC SEVILLE maintenance schedule

2-89

AVG MPH (Average Miles per Hour): 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.
ENGINE OIL LIFE: 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 ªMaintenance
Scheduleº in the Index for proper fluid and change
intervals. To reset the transmission fluid life, 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.)
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.

2-92
CHANGE BRAKE PADS - 125: This message is used
to notify you that the brake pads may have worn down.
A sensor is connected to the brake pads and is triggered
when they wear to a certain point. Have the front and
rear brakes serviced by your dealer as soon as possible.
CHANGE ENGINE OIL
- 82: This means that
the life of the engine oil has expired and it should be
changed within 200 miles. See ªEngine Oilº and ªFilter
Recommendationsº in the Index. After an oil change,
the Oil Life Indicator must be reset. See ªOil Life
Indicator, How to Resetº in the Index.
CHANGE TRANS FLUID
- 47: This message will
appear when it is time to replace the transaxle fluid.
See ªMaintenance Scheduleº in the Index for the
proper fluid and change intervals.
CHECK BRAKE FLUID
- 37: This message will
display if the ignition is in ON to inform the driver
that the brake fluid level is low. Have the brake
system serviced by a technician as soon as possible.
See ªBrake System Warning Lightº in the Index.
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 GAGE
- 50: This message will appear
when the fuel supply is less than 5 gallons (18.9 L) and
the display is turned off. 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 on properly.
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 a few minutes and your vehicle is on a
level surface. Then check the dipstick and add oil
if necessary. See ªEngine Oilº in the Index.

2-112 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 INFO button several
times until ENGINE OIL LIFE appears. If you see
99% ENGINE OIL LIFE, 99 percent of your current
oil life remains.
The DIC may display a CHANGE ENGINE OIL
message. Always keep a written record of the mileage
and date when you changed your oil. For more
information, see ªMaintenance Scheduleº in the Index.
If you see CHANGE ENGINE OIL, it means the oil
life is gone and you should change the oil right away.
The system doesn't check how much oil you have,
so you'll still have to check for that. To see how,
see ªEngine Oilº in the Index.
When the oil is changed, you'll need to reset the system.
See ªOil Life Indicator, How to Resetº in the Index.

3-9
Ventilation Tips

Keep the hood and front air inlet free of ice, snow or
any other obstruction (such as leaves). The heater
and defroster will work far better, reducing the
chance of fogging the inside of the windows.

Keep the air path under the front seats clear
of objects. This helps circulate air throughout
your vehicle.
Passenger Compartment Air Filter
Passenger compartment air, both outside air and
recirculated air, is routed through a passenger compartment
filter, which is part of a three
-piece filter system. The
carbon
-treated filter removes certain contaminants from
the air, including pollen and dust particles. Reductions in
airflow, which may occur more quickly in dusty areas,
indicate that the filter needs to be replaced.The filter is located inside the air control module, with
an access panel under the instrument panel near the
accelerator pedal. The filter should be replaced as part
of routine scheduled maintenance. See ªMaintenance
Scheduleº in the Index for replacement intervals. See
your dealer for assistance when changing the filter.
Your vehicle will not be damaged if you choose not to
replace the filter once the old one is removed.

4-41 When You Are Ready to Leave After
Parking on a Hill
1. Apply your regular brakes and hold the pedal down
while you:

start your engine,

shift into a gear, and

make sure the parking brake has released.
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store the chocks.
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, drive belt, cooling system and brake system.
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 this information before you start
your trip.
Check periodically to see that all hitch nuts and bolts
are tight.
Engine Cooling When Trailer Towing
Your cooling system may temporarily overheat during
severe operating conditions. See ªEngine Overheatingº
in the Index.

6-19
Follow these steps to reinstall the engine air
cleaner/filter assembly:
1. Slide the cover into the slots in the bottom of
the base.
2. Close the cover and make sure that both latches are
secure and fully engaged.
3. Reinstall the clean air duct over the mass airflow
sensor. Make sure that the duct is secure around the
entire outer edge of the sensor.
4. Tighten the air duct clamp.
Refer to the Maintenance Schedule to determine when to
replace the air filter.
See ªScheduled Maintenance Servicesº in the Index.
CAUTION:
Operating the engine with the air cleaner/filter
off can cause you or others to be burned. The air
cleaner not only cleans the air, it stops flame if
the engine backfires. If it isn't there, and the
engine backfires, you could be burned. Don't
drive with it off, and be careful working on the
engine with the air cleaner/filter off.
NOTICE:
If the air cleaner/filter is off, a backfire can
cause a damaging engine fire. And, dirt can easily
get into your engine, which will damage it.
Always have the air cleaner/filter in place when
you're driving.

6-20
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.
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 Index.
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. Too little
fluid could cause the transaxle to overheat. Be
sure to get an accurate reading if you check your
transaxle fluid.

6-23 How to Add Fluid
Refer to the Maintenance Schedule to determine what
kind of transaxle fluid to use. See ªRecommended
Fluids and Lubricantsº in the Index.
If the fluid level is low, add only enough of the proper
fluid to bring the level into the cross
-hatched area on
the dipstick.
1. Pull out the dipstick.
2. Using a long
-neck funnel, add enough fluid at the
dipstick hole to bring it to the proper level.
It doesn't take much fluid, generally less than
one pint (0.5 L). Don't overfill.
NOTICE:
We recommend you use only fluid labeled
DEXRON
-III, because fluid with that label is
made especially for your automatic transaxle.
Damage caused by fluid other than
DEXRON

-III is not covered by your new
vehicle warranty.
3. After adding fluid, recheck the fluid level as
described under ªHow to Check.º
4. When the correct fluid level is obtained, push
the dipstick back in all the way and turn the
handle clockwise. Reinstall the engine air
cleaner/filter assembly.
How to Reset the Transaxle Fluid
Change Indicator
Once the transaxle fluid has been changed, the transaxle
fluid change indicator must be reset. Use the following
steps to reset the indicator:
1. Press the INFO button on the Driver Information
Center (DIC) until TRANS FLUID LIFE
is displayed.
2. Press and hold the INFO RESET button until 100%
is displayed.
The indicator is now reset. The percentage of transaxle
fluid life remaining may be checked at any time by
pressing the INFO button several times until the
TRANS FLUID LIFE message appears.