1999 CADILLAC DEVILLE fuel

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6-56
Finish Damage
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.
Chemical Paint Spotting
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 km) of purchase,
whichever occurs first.

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6-60
MaxiFuse
(8
-Way)Usage
BODY 1 Road Sensing Suspension (RSS) Fuse
(DeVille Concours Only),
Convenience Fuse, BATT Fuse,
Antenna Fuse, Right and Left Position
Lamp Relays (Export),
Hazard/Position Lamp Cut
-Out Relay
(Export), Trunk and Fuel Door
Release Solenoids and Relays, Door
Lock/Unlock Relays, Damper Relay
(DeVille Concours Only), Parking
Lamp Relay, Right and Left Park Fuse
BODY 2 Defog Relay, Pull
-Down Fuse, Right
and Left Heated Seat Fuse, Electronic
Level Control (ELC) Fuse/Relay,
Heated Mirror Fuse, Heated Backlite
Fuse, ELC Circuit Breaker

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6-61
MaxiFuse
(8
-Way)Usage
BODY 3 Controlled Power Relay, Controlled
Power Back
-Up Relay, Cluster Fuse,
Passenger Zone Module (PZM) Fuse,
Radio Fuse, Delayed Accessory Bus
(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, Courtesy
Lamp Relay
LAMPS Headlamps Fuse/Relay, High/Low
Beam Control Relay, Fog Lamp Fuse
(DeVille Concours Only), 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,
DRL FuseMaxiFuse
(8
-Way)Usage
IGN 1 Rear Ignition
-1 Relay, Wiper Fuse,
Relay Ignition
-1 Fuse, Supplemental
Inflatable Restraint (SIR) Fuse,
Accessory Relay
WINDOWS Delayed Accessory Bus (DAB) Relay
SEATS Horn Relay, Driver and Passenger
Lumbar In/Out Relays, Driver and
Passenger Lumbar Up/Down Relays

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6-62
MaxiFuse
(6
-Way)Usage
BATT 3 Steering Column Ignition Switch
BATT 2 Steering Column Ignition Switch
IGN 1 Front Ignition
-1 Relay, Oxygen
Sensor 1 and 2 Fuse, Fuel Fuse, Cruise
Fuse, Fuel Pump Relay
BATT 1 Starter Relay and Solenoid, Park/Rev
Fuse, Park Relay, Powertrain Control
Module (PCM) Fuse, AC Compressor
Fuse and Relay, Cooling Fan Relays,
Reverse Relay
BRAKES Anti
-Lock Brake System (ABS) Brake
Modulator
COOL FNS Cooling Fan Relays 1 and 3Power
Distribution
BlockUsage
ACCESSORY Accessories
HEAD LPS Headlamps
HORN Horn
FOG LPS Fog Lamps
DRL Daytime Running Lamps (DRL)
HI/LO BEAM High and Low
-Beam Headlamps
Relays
INADVERT POWER RELAY
IGN 1 RELAY
STARTER RELAY

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6-66
Fuse Usage
ECS Transaxle Shift Solenoids, Mass
Airflow, Canister Purge, PCM,
Linear Exhaust Gas Recirculation
(EGR), Front Ignition
-1 Relay
PCM (IGN) Powertrain Control Module (PCM)
DIS Electronic Ignition Control Module
CRUISE Stepper Motor Cruise Control,
Power Steering Pressure Switch,
Low Refrigerant Pressure Cutoff
Switch, Park Relay
INJ Injectors 1, 4, 6, 7
INJ Injectors 2, 3, 5, 8
FUEL PUMP PCM, Fuel Pump Relay, Fuel Pump
OXY SEN1 Oxygen Sensor Front
OXY SEN2 Oxygen Sensor Rear,
Catalytic Converter (CAT)
Rear Oxygen Sensor
Relay
A/C COMP RELAY
FUEL PUMP RELAYRear Compartment Fuse Block
This 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 pull the trim away from the
fuse block to gain access.
Fuse Usage
RLY IGN1 Cluster, Cruise in Stalk,
Passenger Zone Module (PZM),
Traction Control (TCC) Switches
SIR Sensing and Diagnostic Module
(SDM), Right and Left Side
Impact Sensing Modules
ELC Electronic Level Control (ELC)
Relay, ELC Sensor
(DeVille Only), ELC Compressor

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6-67
Fuse Usage
TURN Electronic Flasher,
Turn/Hazard Switch
CONSOLE Rear Zone Blower, Right and
Left Heated Seat Switches
(Optional), Cellular Phone
Handset (Optional)
SPARE Not Used
SPARE Not Used
RSS Road Sensing Suspension (RSS)
(DeVille Concours Only)
IGN 0
-BODY PRNDL Indicator (DeVille
Concours Only), 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 (DeVille Concours Only),
Dual Zone Switch (DeVille and
DeVille d'Elegance Only)Fuse Usage
COMFORT CD Player, Remote Keyless Entry
(RKE), Controlled Power Relay,
Air Control Module (ACM), PZM
AMP Active Audio Amplifier (Optional)
PZM Passenger Zone Module (PZM)
RADIO/PHONE Radio Receiver, Phone, DAB
Relay, Trunk Release Relay,
Fuel Door Release Relay,
High/Low Beam Relay
CLUSTER Steering Wheel Controls, Cluster
ACC PZM, Electrochromic Mirror,
Rain Sensor (Optional),
Accessory Relay
HTD BACKLT Rear Window Defog
HTD MIR Right and Left Heated
Outside Mirrors
HTD SEAT R Passenger Heated Seat
Relay (Optional)
HTD SEAT L Driver Heated Seat
Relay (Optional)

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6-68
Fuse Usage
PULL DOWN Trunk Pull
-Down Motor
HDLP WASH Headlamp Washer
ANTENNA Power Mast Antenna
RSS Road Sensing Suspension Module
(DeVille Concours Only),
Damper Relay
(DeVille Concours Only)
CONVENC Trunk Release Relay, Trunk
Release Solenoid, Fuel Door
Release Relay, Fuel Filler Door
Release Solenoid, Door Lock
Relay, Left Front Door Motors,
PZM, Door Unlock Relay
BATT Driver and Passenger Seat Lumbar
Switch (Optional), Memory Seat
Module (Optional)Fuse Usage
RSS Road Sensing Suspension
(DeVille Concours Only)
RT PARK Headlamp Switch, Right
Turn/Stop/Tail Lamps, Right Front
and Rear Sidemarker Lamps,
Right Front Park/Turn Lamps,
License Plate Lamp,
Hazard/Position Lamp Cut
-Out
Relay (Export)
LT PARK Left Turn/Stop/Tail Lamps,
Left Front and Rear Sidemarker
Lamps, Hazard/Position Lamp
Cut
-Out Relay (Export),
Left Front Park/Turn Lamps,
Underhood Lamp,
Trailer (Optional)

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6-70 Wheel Nut Torque
100 lb-ft (140 N´m)
Capacities
Transaxle (4T80-E) 15.0 quarts (14.2 L). . . . . . . . . .
Crankcase (Engine Oil with
Filter Change) 7.5 quarts (7.1 L). . . . . . . . . . . . . . .
Engine Cooling System 12.5 quarts (11.8 L). . . . . . . .
Fuel Tank 20.0 gallons (75.7 L). . . . . . . . . . . . . . . . . .
R
-134a Refrigerant 2.0 lbs. (0.91 kg). . . . . . . . . . . . .
NOTE: All capacities are approximate. When adding, be
sure to fill to the approximate level, as recommended in
this manual. Recheck fluid level after filling.
Air Conditioning Refrigerants
Not all air conditioning refrigerants are the same. If the air
conditioning system in your vehicle needs refrigerant, be
sure the proper refrigerant is used. If you're not sure, ask
your dealer.
Normal Maintenance
Replacement Parts
Air Filter Element AC Type A1096C. . . . . . . . . . . . .
Fuel Filter Element AC Type GF
-650 . . . . . . . . . . . .
Engine Oil Filter AC Type PF
-58 . . . . . . . . . . . . . . . .
PCV Valve AC Type CV
-774C . . . . . . . . . . . . . . . . . .
Spark Plugs AC Type 41
-900 . . . . . . . . . . . . . . . . . . .
Thermostat AC Type 131
-66 . . . . . . . . . . . . . . . . . . . .
Windshield Wiper Blade
(Pin Type) 22 inches (56.5 cm). . . . . . . . . . . . . . . . .
Vehicle Dimensions
Wheel Base 113.8 inches (289.0 cm). . . . . . . . . . . . .
Length 209.8 inches (533.0 cm). . . . . . . . . . . . . . . . .
Height 56.0 inches (142.1 cm). . . . . . . . . . . . . . . . . . .
Width 76.5 inches (194.3 cm). . . . . . . . . . . . . . . . . . .
Front Tread 60.9 inches (154.6 cm). . . . . . . . . . . . . . .
Rear Tread 60.9 inches (154.6 cm). . . . . . . . . . . . . . .