1999 CADILLAC DEVILLE air conditioning

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3-10 Air Conditioning
On hot days, open the windows long enough to let hot
inside air escape. This reduces the time it takes for your
vehicle to cool down. Then keep your windows closed
for the air conditioner to work its best.
With the digital cluster climate control panel, press the
AUTO/ECON button to assist in cooling air and in
maintaining proper airflow. Adjust the temperature to a
comfortable setting by pressing the blue button to cool
your vehicle and pressing the red button to warm your
vehicle. Press the fan button arrows up or down to adjust
the fan speed.
If your vehicle has a console climate control panel
(which is standard with the analog cluster), press the AC
button or the TEMP/AUTO knob to turn the system on.
The system will cool and dehumidify the air inside the
vehicle. Also while in the AUTO mode, the system will
use recirculation as necessary to cool the air. You may
also need to adjust the interior temperature and the fan
speed as needed.
When the air conditioner is on, you may sometimes
notice slight changes in your vehicle's engine speed
and power. This is normal because the system is
designed to cycle the compressor on and off to
keep the desired temperature.
Heating
With the digital cluster climate control panel, press the
AUTO/ECON button to direct airflow and to help save
fuel. Adjust the temperature, if necessary, by pressing
the blue button to decrease temperature and pressing the
red button to increase temperature. Also remember to
adjust the fan speed by pressing the up or down arrow.
If your vehicle has a console climate control panel
(which is standard with the analog cluster), press the
MODE button to select heater. Adjust the interior
temperature to a comfortable level and if the fan speed
needs adjusting, press the up or down arrow.
With each system, outside air will be brought in and sent
through the floor, air conditioning or bi
-level outlets
(depending on the condition). The heater works best if
you keep your windows closed while using it.
Defogging and Defrosting
On cool, humid days, use defog (digital cluster climate
control panel only) to keep the windshield and side
windows clear. Use defrost to remove fog or ice from
the windshield quickly in extremely humid or
cold conditions.

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3-12 Ventilation System
Your vehicle's flow-through ventilation system supplies
outside air into the vehicle when it is moving. Outside
air will also enter the vehicle when the heater or the air
conditioning fan is running.
The front outlets are located in the center and at each
side of the instrument panel. You can adjust the
direction of airflow by moving the center control levers
or you can stop the airflow by moving the lever located
on each side of the outlets downward.
The direction of airflow to the rear seats can be adjusted
if you have the optional full console (DeVille Concours
only). Move the fan lever to adjust the blower
speed from low to high. Move the vent lever to direct
the airflow.

6-
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6-1
Section 6 Service and Appearance Care
Here you will find information about the care of your vehicle. This section begins with service and fuel information,
and then it shows how to check important fluid and lubricant levels. There is also technical information about your
vehicle, and a part devoted to its appearance care.
6
-2 Service
6
-3 Fuel
6
-5 Fuels in Foreign Countries
6
-5 Filling Your Tank
6
-8 Filling a Portable Fuel Container
6
-8 Checking Things Under the Hood
6
-11 Engine Oil
6
-16 Engine Air Cleaner/Filter
6
-19 Automatic Transaxle Fluid
6
-23 Engine Coolant
6
-27 Windshield Washer Fluid
6
-28 Brakes
6
-32 Battery
6
-33 Bulb Replacement
6
-41 Windshield Wiper Blade Replacement6
-42 Tires
6
-51 Appearance Care
6
-51 Cleaning the Inside of Your Vehicle
6
-54 Cleaning the Outside of Your Vehicle
6
-55 Cleaning Aluminum or Chrome-Plated
Wheels (If Equipped)
6
-56 Underbody Maintenance
6
-56 Chemical Paint Spotting
6
-57 GM Vehicle Care/Appearance Materials
6
-58 Vehicle Identification Number (VIN)
6
-59 Electrical System
6
-69 Replacement Bulbs
6
-69 Capacities and Specifications
6
-70 Air Conditioning Refrigerants
6
-70 Normal Maintenance Replacement Parts

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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). . . . . . . . . . . . . . .

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8-1
Section 8 Index
A
BS 4-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adapter Kits, CDs 3-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adding Engine Oil 6-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adding Equipment to the Outside of Your Vehicle 6-3 . . . . . .
Aiming Headlamps 6-35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Bag 1-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How Does it Restrain 1-27 . . . . . . . . . . . . . . . . . . . . . . . . . .
How it Works 1-24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Location 1-24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Readiness Light 1-23, 2-68 . . . . . . . . . . . . . . . . . . . . . . . . .
Servicing 1-29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
What Makes it Inflate 1-26 . . . . . . . . . . . . . . . . . . . . . . . . . .
What Will You See After it Inflates 1-27 . . . . . . . . . . . . . . .
When Should it Inflate 1-26 . . . . . . . . . . . . . . . . . . . . . . . . .
Air Conditioning 3-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Conditioning Refrigerants 6-70 . . . . . . . . . . . . . . . . . . . . .
Air Control, Climate Control System 3-3, 3-6 . . . . . . . . . . . . .
Alarm, Theft-Deterrent 2-15 . . . . . . . . . . . . . . . . . . . . . . . . . .
Alignment and Balance, Tire 6-49 . . . . . . . . . . . . . . . . . . . . . .
Aluminum Wheels, Cleaning 6-55 . . . . . . . . . . . . . . . . . . . . . .
Analog Cluster Climate Control Panel 3-6 . . . . . . . . . . . . . . . .
Analog Control Buttons 2-81 . . . . . . . . . . . . . . . . . . . . . . . . . .
Antenna, Power 3-41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Antifreeze 6-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Anti
-Lock
Brake System Warning Light 2-71, 4-7 . . . . . . . . . . . . . . . .
Brakes 4-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Anti-Lockout Feature 2-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Anti-Theft, Radio 3-37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appearance Care 6-51 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appearance Materials, Vehicle Care 6-57 . . . . . . . . . . . . . . . .
Apply Brake To Shift Message 2-82 . . . . . . . . . . . . . . . . . . . .
Arbitration Program 7-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Armrest, Storage 2-53, 2-54 . . . . . . . . . . . . . . . . . . . . . . . . . .
Ashtrays 2-54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Assist Handles 2-56 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio Equipment, Adding 3-39 . . . . . . . . . . . . . . . . . . . . . . . .
Audio Steering Wheel Controls 3-37 . . . . . . . . . . . . . . . . . . . .
Audio System, Tips 3-38 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio Systems 3-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic Door Locks 2-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic Pull-Down Feature, Trunk Lid 2-13 . . . . . . . . . . . .
Automatic Transaxle
Overdrive 2
-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting Your Engine 2-20 . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid 6-19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 2-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shifting 2-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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8-9
Parking
At Night 2-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake 2-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake Indicator Light 2-70 . . . . . . . . . . . . . . . . . . . . . . . . . .
Lots 2-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Over Things That Burn 2-32 . . . . . . . . . . . . . . . . . . . . . . . .
With a Trailer on Hills 4-38 . . . . . . . . . . . . . . . . . . . . . . . . .
Parking Lamps 2-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Passenger 's Side Temperature Knob/Button 3-3, 3-6 . . . . . . .
Passing 4-13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PASS-Key
II 2-17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
People with Disabilities, GM Mobility Program 7-5 . . . . . . . .
Personalization Feature, Radio 3-36 . . . . . . . . . . . . . . . . . . . .
Phone Not Present Message 2-86 . . . . . . . . . . . . . . . . . . . . . . .
Playing a Cassette Tape 3-16, 3-19, 3-28 . . . . . . . . . . . . . . . .
Playing a Compact Disc 3-21, 3-30 . . . . . . . . . . . . . . . . . . . . .
Power
Accessory, Retained 2
-19 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Antenna Mast Care 3-41 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Locks 2-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Control Mirror 2-51 . . . . . . . . . . . . . . . . . . . . . . . .
Seat 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering 4-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering Fluid 6-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Windows 2-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Windows and Other Power Options 6-59 . . . . . . . . . . . . . . .
Pregnancy, Use of Safety Belts 1-20 . . . . . . . . . . . . . . . . . . . .
Problems on the Road 5-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Program Pass Key Message 2-86 . . . . . . . . . . . . . . . . . . . . . . .
Programmable Automatic Door Locks 2-5, 2-91 . . . . . . . . . .
Publications, Service and Owner 7-11, 7-12 . . . . . . . . . . . . . .
Pull-Down Feature, Automatic Trunk Lid 2-13 . . . . . . . . . . . .
Radios 3-14, 3-18, 3-22 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Data Systems (RDS) Program Type (PTY)
Selections 3
-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Personalization with Home and Away Feature 3-36 . . . . . .
Reception, Understanding 3-38 . . . . . . . . . . . . . . . . . . . . . .
Theft-Deterrent Feature 3-37 . . . . . . . . . . . . . . . . . . . . . . . .
Rain, Driving In 4-17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rainsense Wipers 2-37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RAP 2-19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reading Lamps 2-47 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear
Compartment Fuse Block 6
-66 . . . . . . . . . . . . . . . . . . . . . . .
Door Security Locks 2-6 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lighted Visor Vanity Mirror 2-55 . . . . . . . . . . . . . . . . . . . . .
Lockout Windows 2-35 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outside Seat Position 1-31 . . . . . . . . . . . . . . . . . . . . . . . . . .
Seat Passengers 1-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Armrest 2-54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Turn Signal Lamps, Bulb Replacement 6-40 . . . . . . . . . . . .
Window Defogger 3-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rearview Mirrors 2-49, 2-52 . . . . . . . . . . . . . . . . . . . . . . . . . .
Recirculation 3-5, 3-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reclining Front Seatbacks 1-4 . . . . . . . . . . . . . . . . . . . . . . . . .
Recreational Vehicle Towing 4-29 . . . . . . . . . . . . . . . . . . . . . .
Refrigerants, Air Conditioning 6-70 . . . . . . . . . . . . . . . . . . . .
Remote
Fuel Door Release 6
-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Keyless Entry 2-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recall Memory 2-93 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trunk Release 2-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remove Key Message 2-86 . . . . . . . . . . . . . . . . . . . . . . . . . . .