1994 CADILLAC DEVILLE maintenance

Downloaded from www.Manualslib.com manuals search engine Servicing Your Air Bag=Equipped Cadillac
Air bags affect how your Cadillac should be serviced. There are parts of
the air bag system in several places around your vehicle.
You don’t want
the system to inflate while someone is working on your vehicle. Your
Cadillac dealer and the
1994 Cadillac Service Manual have information
about servicing your vehicle and the air bag system. The air bag system
does not need regular maintenance.

Downloaded from www.Manualslib.com manuals search engine CHECK OIL LEVEL - 36
This message will appear when your engine oil is approximately a quart
low. If this message is displayed, check the
oil and add as needed.
CHECK WASHER FLUID - 25
This message will appear for a few seconds indicating that you need
washer solvent.
CHANGE OIL SOON - 40
This message will appear when your engine oil is less than 10 percent or
the mileage since the last
oil change is more than 6750 miles.
CHANGE ENGINE OIL - 82
This means that the life of your engine oil has expired and it should be
changed immediately. See engine
oil and filter recommendations in the
Maintenance Schedule. After an
oil change, the Oil Life Index must be
reset. See “Oil Life Indicator” in the index
on how to reset it.
CRUISE ENGAGED - 43
This message will appear for a few seconds when you select a speed to
cruise at.
ENGINE COOLANT HOT - 44
This message will appear when your engine coolant temperature is over
126°C (259OF). To avoid added strain on a hot engine, turn off your
Climate Control system, and stop and allow your vehicle to idle until it
cools down or the message
is removed. If it does not cool down, turn off
your engine and have it serviced before driving it again. Severe engine
damage can result from an overheated engine. See “Engine Overheating”
in the Index.
ENGINE HOT - A/C COMPRESSOR OFF - 16
This message will appear when the Climate Control is in “Auto” or
“Defrost” and the engine coolant is hotter than the normal operating
temperature.
To avoid added strain on a hot engine the air conditioning
compressor is automatically turned
off. When that happens, air
conditioned air is not delivered.
If the coolant temperature returns to
normal, the
A/C operation returns to normal.
c
-
L. J
144

Downloaded from www.Manualslib.com manuals search engine from the struts to determine proper system operation. If the computer
receives an incorrect feedback from the system, an error code
will be set
in memory and a “SERVICE RIDE CONTROC’ message will display on
the Driver Information Center. If this message should appear, have your
vehicle serviced at your Cadillac dealer at your earliest convenience.
Oil Life Indicator
This feature lets you know when to change your engine oil. It’s based
upon the engine oil temperatures and your driving patterns.
To see the display, press the Information button several times until
“XXX
OIL LIFE LEFT” appears.
You’ll
see how much oil life you have left, as a percentage. So, if you see
“95 OIL LIFE LEFT,” for example, that means that the way you’re
driving your car,
95% of your current oil life is still left.
The Oil Life Indicator may say
to change the oil sooner than your
maintenance schedule. This can happen
if driving conditions, such as
short trips
in cold weather, cause shorter oil life. Always keep a written
record of the mileage and date when you last changed your oil. For more
information on when to change your oil, see the Cadillac Maintenance
Schedule Booklet.
If you
see “CHANGE OIL SOON,” it means that you have less than 10%
of your oil life left, and you should consider changing your engine oil.
If you see “CHANGE ENGINE OIL,’’ it means the oil
life is gone and
you should change the oil right away (certainly within 200 more miles
[320 km]).
148
r
’c1

Downloaded from www.Manualslib.com manuals search engine 3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store the chocks.
Engine Cooling When Trailering
Your cooling system may temporarily overheat during severe operating
conditions such as;
Climbing grades steeper than 4% at ambient temperatures above
90” Fahrenheit (32’Celsius) with a loaded vehicle and trailer.
Stopping after high-speed driving.
Idling for long periods in stop and go traffic.
If “ENGINE
HOT A/C COMPRESSOR OFF” message appears on the
Driver Information Center, do not be alarmed. This is a normal function
designed to reduce the load on the engine and cooling system you can
continue to drive your vehicle.
If “ENGINE COOLANT
HOT” message appears on the Driver
Information Center, pull off to the side of
the road as soon as it is safe to
do so. When the vehicle is at a complete stop, shift the transmission
selector to
P (Park) and allow the engine to idle. Do not turn off the
engine or increase engine speed above a normal idle. Within
two or three
minutes the system should cool sufficiently to allow
A/C operation to
resume. At that
time resume driving at a reduced speed. Return to
normal driving after
10 minutes if the “ENGINE COOLANT HOT”
message
is not displayed.
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, belts, cooling system, and brake wear. 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 these sections
before
you start your trip.
Check periodically
to see that all hitch nuts and bolts are tight.
213

Downloaded from www.Manualslib.com manuals search engine You should keep a record with all parts receipts and list the mileage and
the date
of any service work you perform. See “Maintenance Record” in
the Index.
n
I NOTICE:
If you try to do your own service work without knowing enough
about it, your vehicle could be damaged.
FUEL
Use premium unleaded gasoline rated at 91 octane or higher. It should
meet specifications
ASTM D4814 in the U.S. and CGSB 3.5-92 in
Canada. These fuels should have the proper additives,
so you should not -
have to add anything to the fuel.
In the U.S. and Canada, it’s easy to be sure you get the right kind
of
gasoline (unleaded). You’ll see “UNLEADED” right on the pump. And
only unleaded nozzles will fit into your vehicle’s filler neck.
Be sure the posted octane is at least
91. If the octane is less than 91, you
may get
a heavy knocking noise when you drive. (In an emergency, you
may be able to use lower octane
-- as low as 87 -- if heavy knocking does
II
249
-I______

Downloaded from www.Manualslib.com manuals search engine 0 Have your Cadillac serviced as described in the maintenance booklet.
0 Keep tires inflated to recommended pressures.
0 Anticipate traffic stops.
-
Here are some things that will lower fuel economy:
Quick acceleration.
0 Traveling at higher speeds. Traveling at 65 mph instead of 55 mph
Carrying unnecessary weight in the vehicle.
Rewing the engine. This is not ne.cessary for your vehicle.
.-
lowers fuel economy by 15 percent.
__
Operating your vehicle with the suspension out of alignment or with
the wheels and tires out of balance.
Use of electrical accessories which require high amperage when they
Even things beyond your control such as weather conditions affect your
fuel economy. Driving up steep hills,
in rain or snow, and into a strong
wind will lower fuel economy. In the lower left corner of the fuel
economy window sticker from your vehicle is
the range of city and
highway
fuel economy you can expect to get from your Cadillac. If you
are doing everything to raise your fuel economy,
but are still not within
about your fuel economy as you can find, (miles driven, gallon’s of fuel
used, etc.) and provide it to your dealership for their review and
are
not needed.
-
-
-- this range, your vehicle may need service. Collect as much information
-- assistance.

Downloaded from www.Manualslib.com manuals search engine What to Do with Used Oil
Did you know that used engine oil contains certain elements that may be
unhealthy for your skin and could even cause cancer? Don’t let used oil
stay
on your skin for very long. Clean your skin and nails with soap and
water, or a good hand cleaner. Wash or properly throw away clothing or
rags containing used engine
oil. (See the manufacturer’s warnings about
the use and disposal
of oil products.)
Used oil can be a real threat to the environment. If you change your own
oil, be sure to drain all free-flowing oil from the filter before disposal.
Don’t ever dispose of oil by putting it
in the. trash, pouring it on the
ground, into sewers, or into streams or bodies of water. Instead, recycle it
by taking it to a place that collects used oil. If you have a problem
properly disposing
of your used oil, ask your dealer, a service station or a
local recycling center for help.
AIR CLEANER
To gain access to the
filter loosen the four
screws and lift the top
half
of the air cleaner
assembly.
Refer to the
Maintenance Schedule
to determine when
to
replace the air filter.
See “Scheduled Maintenance Services’’
in the Index.
265

Downloaded from www.Manualslib.com manuals search engine NOTICE:
If the air cleaner 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
in place when you’re driving.
AUTOMMTIC TRANSAXLE FLUID
Men to Check and Change
A good time to check your automatic transaxle fluid level is when the
engine oil is changed. Refer to the Maintenance Schedule to determine
when to change your fluid. See “Scheduled Maintenance Services” in the
Index.
How to Check
Because this operation can be a little difficult, you may choose to have
this
done at your Cadillac 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.
266