1998 CADILLAC DEVILLE fuel

Downloaded from www.Manualslib.com manuals search engine What Kind of Engine Oil to Use
Oils recommended for your vehicle can be identified by
looking for the “Starburst” symbol. This symbol
indicates that the oil has been certified by the American
Petroleum Institute
(API). Do not use any oil which
does not carry this Starburst symbol.
If you change your own
oil, be sure you use oil
that has the Starburst
symbol on the front of the
oil container. If you have
your oil changed
for you,
be sure the oil put into
your engine
is American
Petroleum Institute certified
for gasoline engines.
You should also use the proper viscosity oil for your
vehicle,
as shown in the following chart:
RECOMMENDED SAE VtSCOSI’lY GRADE ENGINE OILS I -
FOR BEST FUEL fnn*7Y AND COW Sgmr-*** I, SELECT THE LOWEST
SAE VISCOSITY JIL FOR THE EX1 --..- TEMPERATURE RANGE. I
HOT
WEATHER
‘OF m OC’I
+loo- - +3a
+80- - +27
+60- - t16
+40- -+4
+20- --7
0- --la
SAE sw-30
COLD
WEATHER
1- SAL I law-30
PREFERRED above W (-18%)
LoOK
FOR MIS
SYMBOL
DO NOT USE SAE 2OW-50 OR ANY OTHER GRADE OIL NOT RECOMMENDED
6-13

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.
~MIUM UNLEADED -
-
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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 - -
If you’ll be driving at high speeds (e.g., speeds of 100 mph
(160 km/h) or higher), where it is legal, set the cold
inflation pressure to the maximum inflation pressure shown on the
tire sidewall, or to 38 psi (265 kpa),
whichever is lower. See the example below. When you end
this high-speed driving, return to the cold inflation
pressure shown on the Tire-Loading Information label.
Example:
You’ll find maximum load and inflation pressure molded
on the tire’s sidewall, in small letters, near the
rim flange. It will read something like this: Maximum load 690
kg (1521 lbs.) @ 300 Wa (44 psi) Max. Press.
For this example,
you would set the inflation pressure
for high-speed driving at
39 psi (265 kPa).
NOTICE:
Don’t let anyone tell you that underinflation or
overinflation is all right.
It’s not. If your tires
don’t have enough air (underinflation), you can
get the following:
Too much flexing
0 Too much heat
0 Tire overloading
NOTICE: (Continued)
NOTICE: (Continued)
Bad wear
Bad handling
0 Bad fuel economy.
If your tires have too much air (overinflation),
you can get the following:
0 Unusual wear
Bad handling
Rough ride
Needless damage from road hazards.
When to Check
Check your tires once a month or more.
Don’t forget your compact spare tire. It should be at
60 psi (420 kPa).
How to Check
Use a good quality pocket-type gage to check tire
pressure.
You can’t tell if your tires are properly inflated
simply by looking at them. Radial tires may look
properly inflated even when they’re underinflated.
Be sure to put the valve caps back on the valve stems.
They help prevent leaks
by keeping out dirt and moisture.
6-42

Downloaded from www.Manualslib.com manuals search engine Fink lamage Chemical Paint Spotting
Any
stone chips, fractures or deep scratches in the finish
should be repaired right away. Bare metal will corrode
quickly and may develop into a major repair expense.
Minor chips and scratches can be repaired with touch-up
materials available from your dealer or other service
outlets. Larger areas of finish damage can be corrected
in your dealer’s body and paint shop.
Underbody Maintenance
Chemicals used for ice and snow removal and dust
control can collect on the underbody. If these are not
removed, accelerated corrosion (rust) can occur on
the underbody parts such as fuel lines, frame, floor
pan and exhaust system even though they have
corrosion protection.
At least every spring, flush these materials from the
underbody with plain water. Clean any areas where mud
and other debris can collect. Dirt packed in closed areas
of the frame should be loosened before being flushed.
Your dealer or an underbody car washing system can do
this for you. Some weather and atmospheric conditions
can create
a chemical fallout. Airborne pollutants can fall upon
and attack painted surfaces on your vehicle. This
damage can take two forms: blotchy, ringlet-shaped
discolorations, and small irregular dark spots etched
into the paint surface.
Although no defect in the paint job causes this, Cadillac
will repair, at no charge to the owner, the surfaces of
new vehicles damaged by this fallout condition within
12 months or 12,000 miles (20 000 krn) of purchase,
whichever occurs first.

Downloaded from www.Manualslib.com manuals search engine Fuse
BODY 1
BODY 2
Usage
Road Sensing Suspension (RSS) Fuse (DeVille Concours Only), Convenience
Fuse,
BATT Fuse, Antenna Fuse, Right
and Left Position Lamp Relays
(Export), HazardPosition Lamp
Cut-Out Relay (Export), Passenger and
Driver Seat Belt Comfort Solenoids,
Trunk and Fuel Door Release
Solenoids and Relays, Door
LocWnlock Relays, Damper Relay
(DeVille Concours Only), Parking
Lamp Relay, Right and Left Park Fuse, Rear Fog Lamp Relay
Defog Relay, Pull-Down Fuse, Right and Left Heated Seat Fuse, Electronic
Level Control (ELC) FuseRelay,
Antenna Fuse, Heated Mirror
Fuse,
Heated Backlite Fuse, Electronic
Level Control (ELC) Circuit Breaker
Fuse
BODY 3
Usage
Controlled Power Relay, Controlled
Power Back-up Relay, Cluster Fuse,
Platform Zone Module (PZM) Fuse,
Radio Fuse, DAB Relay,
Trunk and
Fuel
Door Release Relay, High Beam
Relay, Comfort Fuse, AMP (Bose Only) Fuse
INADVERT Inadvertent Power Relay, Interior Lamps Fuse, Cigarette Lighter-
1 Fuse,
Cigarette Lighter-2 Fuse, Cigarette
Lighter-2 Fuse, Courtesy Lamp Relay
LAMPS
IGN
1
Headlamps FuseRelay, HighLow
Beam Control Relay, Fog LampLDRL
Fuse, Hazard Fuse, Mirror Fuse,
Inadvertent Power Relay, Right and
Left High Beam Fuse, Right and Left Low Beam Fuse, Stop Fuse, Fog
Lamp Relay (DeVille Concours Only),
DRL Relay
Rear Ignition-
1 Relay, Wiper Fuse,
Relay Ignition-
1 Fuse, Supplemental
Inflatable Restraint
(SIR) Fuse,
Accessory Relay
6-59

Downloaded from www.Manualslib.com manuals search engine Fuse Usage
WINDOWS Delayed Accessory Bus (DAB) Relay
SEATS
Horn Relay, Driver and Passenger
Lumbar IdOut Relays, Driver and
Passenger Upmown Relays
BATT
3
BATT 2
IGN 1”
BATT 1
BRAKES Steering Column Ignition Switch
Steering Column Ignition Switch
Front and Rear Ignition-
1 Relay,
Oxygen Sensor
1 and 2 Fuse, Fuel
Fuse, Cruise Fuse, DRL Relay, Front
and Rear Fog Lamp Relay (DeVille
Concours Only), Control Power
Back-up Relay, Ignition-1 Fuse, Fuel
Pump Relay
Starter Relay and Solenoid, Park/Rev
Fuse, Park Relay, PCM Fuse,
AC Compressor Fuse and Relay,
Fan Relay
ABS Brake Modulator
COOL FNS Cooling Fan Relays 1 and 3
* Do not alter OBD 11 related fuses or circuit breakers.
Fuses and Circuit Breakers
The wiring circuits in your vehicle are protected from
short circuits by a combination of fuses and circuit
breakers. This greatly reduces the chance of fires
caused by electrical problems.
Look at the silver-colored band inside the fuse. If the
band
is broken or melted, replace the fuse. Be sure you
replace a bad fuse with a new one
of the identical size
and rating.
If you ever have a problem on the road and don’t
have a spare fuse, you can “borrow” one that has the same amperage. Pick some feature
of your vehicle that
you can get along without
-- like the radio or cigarette
lighter
-- and use its fuse, if it is the correct amperage.
Replace it as soon as you can.
There are two fuse blocks in your vehicle: the engine
compartment fuse block and the rear compartment
fuse block.
6-60

Downloaded from www.Manualslib.com manuals search engine Fuse
IGN- 1
WIPERS
A/C COMP
PCM (BAT)*
PARKREV
ECS*
Usage
Rear Ignition- 1 Relay, Fog Lamp
Relays (DeVille Concours Only),
Control Power Back-up, DlU
Relay, Ignition Switch in Steering
Column, Injectors, ECS Fuse, PCM
Fuse, DIS Fuse
Accessory Relay, Wiper Switch
AC Compressor Relay, Cooling Fan
Relays 1,2,3, Compressor Clutch
PCM
TCC and Exterior Travel Brake
Switch, Reverse Relay, Right and
Left Back-up Lamps,
Electrochromic Mirror (in Header),
Park Relay, Brake Transaxle-Shift
Interlock (BTSI) Switch, BTSI, PZM
Transaxle Shift Solenoids, Mass
Airflow, Canister Purge, PCM,
Linear Exhaust Gas Recirculation (EGR), Front Ignition-
1 Relay
Fuse Usage
PCM (IGN)* Powertrain Control Module (PCM)
DIS*
CRUISE
INJ*
Electronic Ignition Control Module Stepper Motor Cruise Control,
Power Steering Pressure Switch, Low Refrigerant Pressure
Cutoff Switch
Injectors 1,4,6,7
INJ* Injectors 2, 3, 5, 8
FUEL PUMP* PCM, Fuel Pump Relay, Fuel Pump
FUEL PUMP* Fuel Pump
OXY SEN1 * Oxygen Sensor Front, CAT Front
Oxygen Sensor
OXY SEN2* Oxygen Sensor Rear, Catalytic Converter (CAT) Rear
0
xygen Sensor
* Do not alter OBD I1 related fuses or circuit breakers.
6-63

Downloaded from www.Manualslib.com manuals search engine Rear Compartment Fuse Block
The fuse block is located on the front wall of the trunk
(behind the rear seat) on the driver’s side. Loosen the
four trunk trim fasteners and ~ull the trim away from the
fuse block to gain access.
Fuse
RSS
IGN O-BODY
RLY IGN 1 ~O~~~U~
~~n~nn~ IGN 0-BODY COMFORT
HTD BACKLT HTD MIR
HTD SEAT R HTD SEAT L PULL DOWN
ANTENNA CONVENC RT PARK LT PARK
RADIOPHONE CLUSTER
COMFORT
Fuse
RLY IGNl*
SIR
ELC
TURN
CONSOLE
Usage
Cluster, Cruise in Stalk, PZM,
TCC Switches
SDM
Electronic Level Control (ELC) Relay, ELC Sensor (DeVille
Only), ELC Compressor
Electronic Flasher,
Turn/Hazard Switch
Headlamp Wash Relay, Rear
Zone Blower, Right and Left
Heated Seat Switches (Optional)
Usage
Road Sensing Suspension (RSS) (DeVille Concours Only)
PRNDL, Heated Windshield
Module (Optional), PZM,
Cluster, Air Control Module (ACM), Upper Zone Motor,
Lower Zone Motor (Optional), HVAC Solenoids, Climate
Control Panel
Analog Cluster
(Console Shift Only), Rear Defog
Relay, ELC Relay
CD Player, Remote Keyless
Entry (RKE), Controlled Power Relay, Air Control Module
(ACM), PZM
AMP (Bose Only) Active Audio Amplifier (Optional)
PZM PZM
RADIOPHONE Radio Receiver, Radio Interface
Module (RIM) (Bose Only),
Phone,
DAB Relay, Trunk
Release Relay, Fuel Door Release Relay, High/Low Beam Relay
Steering Wheel Controls, Cluster
CLUSTER