1998 CADILLAC DEVILLE engine

Downloaded from www.Manualslib.com manuals search engine Automatic Transaxle Fluid
Operating the engine with the air cleaner 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
off.
NOTICE:
If the air cleaner is off, a backfke 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.
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:
0 In heavy city traffic where the outside temperature
0 In hilly or mountainous terrain. regularly reaches
90°F (32°C) or higher.
0 When doing frequent trailer towing.
0 Uses such as found in taxi, police or delivery service.
0 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 “Scheduled Maintenance Services” in the
Maintenance Schedule booklet.
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Downloaded from www.Manualslib.com manuals search engine 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.
I 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 90°F (32°C).
At high speed for quite a while.
In heavy traffic -- especially in hot weather.
While pulling a trailer.
To get the right reading, the fluid should be at
normal operating temperature, which is 180°F to
200°F (82°C to 93°C).
Get the vehicle warmed
up by driving about
15 miles (24 km) when outside temperatures are
above
50°F (10°C). If it's colder than 50°F ( 10°C),
you may have to drive longer.
Checking the Fluid Level
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Park your vehicle on a level place. Keep the
engine running.
With the parking brake applied, place the shift
lever in PARK (P).
With your foot on the brake pedal, move the shift
lever through each gear range, pausing for about
three seconds in each range. Then, position the
shift lever in PARK (P).
Let the engine
run at idle for three to five minutes.

Downloaded from www.Manualslib.com manuals search engine Then, without shutting off the engine, follow these steps:
I
1. The black transaxle fluid cap is located next to the
radiator hose and below the air cleaner assembly on
the driver’s side of the engine. Remove the air
cleaner assembly
so you can reach the transaxle fluid
cap. The assembly
is attached to the vehicle by two
fasteners. Lift up on the air cleaner assembly to
remove it.
2. Find the transaxle fluid cap and turn it to the left
to remove.
3. Pull out the dipstick and wipe it with a clean rag or
4. Push it back in all the way, wait three seconds and
paper towel.
then pull it back out again.
5. Check both sides of the dipstick, and read the
lower level. The fluid level must be in the
cross-hatched area.
6. If the fluid level is in the acceptable range, push
the dipstick back in all the way. Replace the
air
cleaner assembly.
How to Add Fluid
Refer to the Maintenance Schedule to determine
what kind of transaxle fluid to use. See “Recommended
Fluids and Lubricants” in the Maintenance
Schedule booklet.
6-20

Downloaded from www.Manualslib.com manuals search engine 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@-111, because fluid with that label is
made especially for your automatic transaxle.
Damage caused by fluid other than DEXRON-111
is not covered by your new vehicle warranty.
How to Reset Transaxle Fluid
Change Indicator
Your vehicle is equipped with a transaxle fluid change
indicator.
A CHANGE TRANS FLUID message will
display on the Driver Information Center (DIC) when
the powertrain computer determines that the transaxle
fluid needs to be changed
or at each 100,000 miles
(160 000 km) interval, whichever occurs first. When
this message appears, change the transaxle fluid and
reset the transaxle fluid life indicator as follows:
1. Turn the ignition on but do not start the engine.
2. Press and hold the OW and rear defog buttons on the
climate control at the same time until the TRANS
FLUID
RESET message appears on the DIC.
3. After adding fluid, recheck the fluid level as
described under “How to Check.”
4. When the correct fluid level is obtained, push the
dipstick back in all the way.
6-21

Downloaded from www.Manualslib.com manuals search engine Engine Coolant
The cooling s stem 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.
B
The following explains your cooling system and how
to add coolant when it is low. If you have a problem
with engine overheating, see “Engine Overheating” in
the Index.
A 50/50 mixture of water and DEX-COOL’
coolant will:
0 Give freezing protection down to -34°F (-37°C).
0 Give boiling protection up to 265 “F ( 129 O C).
0 Protect against rust and corrosion.
0 Help keep the proper engine temperature.
0 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.
6-22

Downloaded from www.Manualslib.com manuals search engine What to Use
Use a mixture of one-half clean water (preferably
distilled) and one-half
DEX-COOL@ coolant which
won’t damage aluminum
parts. If you use this mixture,
you don’t need to add anything else.
I
Adding only plain water to your cooling system
can be dangerous. Plain water, or some other
liquid like alcohol, can boil before the proper
coolant mixture will. Your vehicle’s coolant
warning system
is set for the proper coolant
mixture. With plain water or the wrong mixture,
your engine could get too hot but you wouldn’t
get the overheat warning. Your engine could
catch fire and you or others could be burned.
Use a
50/50 mixture of clean water and
DEX-COOL@ coolant.
NOTICE:
If you use an improper coolant mixture, your
engine could overheat and be badly damaged.
The repair cost wouldn’t be covered by your
warranty.
Too much water in the mixture can
freeze and crack the engine, radiator, heater core
and other parts.
If you have to add coolant more than four times a year,
have your dealer check your cooling system.
NOTICE:
If you use the proper coolant, you don’t have to
add extra inhibitors or additives which claim to
improve the system. These can be harmful.
6-23

Downloaded from www.Manualslib.com manuals search engine Checking Coolant
L
The surge tank is located next to the engine block on the
passenger's side of the engine.
The cooling system is under a lot of pressure when it is
hot.
If the CHECK COOLANT LEVEL message
appears on the Driver Information Center (DIC), you
will need to add coolant.
l'brning the surge tank pressure cap when the
engine and radiator are hot can allow steam and
scalding liquids to blow
out and burn you badly.
Never turn
the surge tank pressure cap -- even a
little
-- when the engine and radiator are hot.
When your engine is cold, the coolant level should be
at the
FULL COLD mark, which is 2.5 inches (6.4 cm)
below the base
of the fill neck. Use a flashlight as
necessary to
see into the tank.
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If the CHECK COOLANT LEVEL message comes on,
it means you're low on engine coolant.
For more information, see "Check Coolant Level"
message in the Index.

Downloaded from www.Manualslib.com manuals search engine Adding Coolant
If you need more coolant, add the proper DEX-COOL@
coolant mixture at the surge tank, but only when the
engine
is cool.
r-
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol, and it will burn if the engine parts are hot
enough. Don’t spill coolant on
a hot engine.
Surge Tank Pressure Cap
I NOTICE:
The surge tank cap is a 15 psi (105 kPa)
pressure-type cap and must be tightly installed to
prevent coolant loss and possible engine damage
from overheating. Be sure the arrows on the cap
line up.
If the surge tank pressure cap needs to be replaced, a
GM cap is recommended.
Thermostat When replacing the pressure cap, make sure it is tight.
Engine coolant temperature is controlled by a thermostat
in the engine coolant system. The thermostat stops the
flow of coolant through the radiator until the coolant
reaches a preset temperature.
If your thermostat needs to be replaced, a GM
thermostat is recommended.
6-25