1999 CADILLAC DEVILLE thermostat

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6-22 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 OFF and rear defog buttons on the
climate control at the same time until the TRANS
FLUID RESET message appears on the DIC.
Surge Tank Pressure Cap
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
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.

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6-69
Replacement Bulbs
Application Number
Headlamps, Composite
Inner High Beam 9005. . . . . . . . . . . . . . . . . . . . . . .
Outer Low Beam 9006. . . . . . . . . . . . . . . . . . . . . . .
Front Turn Signal 3157 NA. . . . . . . . . . . . . . . . . . . . .
Center High
-Mounted Stoplamp (CHMSL) 1156. . .
Rear Turn Signal and Taillamp 2057. . . . . . . . . . . . .
Capacities and Specifications
The following approximate capacities are given in
English and metric conversions. Please refer to
ªRecommended Fluids and Lubricantsº in the
Maintenance Schedule booklet for more information.
Engine Specifications
Displacement 279 cubic inches (4 565 cc). . . . . . . . .
Type 4.6L DOHC V8. . . . . . . . . . . . . . . . . . . . . . . . . .
VIN Engine Code
DeVille and DeVille d'Elegance Y. . . . . . . . . . . . . .
Concours 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Horsepower
DeVille and DeVille
d'Elegance 275 (bhp) @ 5600 rpm. . . . . . . . . . . . . .
205 (kW) @ 5600 rpm
Concours 300 (bhp) @ 6000 rpm. . . . . . . . . . . . . . .
224 (kW) @ 6000 rpm
Torque
DeVille and DeVille
d'Elegance 300 (lb
-ft) @ 4000 rpm . . . . . . . . . . . . .
407 (N´m) @ 4000 rpm
Concours 295 (lb
-ft) @ 4400 rpm . . . . . . . . . . . . . .
400 (N´m) @ 4400 rpm
Firing Order 1
-2-7-3-4-5-6-8 . . . . . . . . . . . . . . . . . . .
Thermostat Starts To Open 177
-184
F (81-85
C) . .

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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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8-12
Tachometer 2-67 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Taillamps, Bulb Replacement 6-40 . . . . . . . . . . . . . . . . . . . . .
Tape Player Care 3-39 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tapes, Playing Cassettes 3-16, 3-19, 3-28 . . . . . . . . . . . . . . .
Telephone, Cellular 2-56 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Temperature Controls 3-3, 3-6 . . . . . . . . . . . . . . . . . . . . . . . . .
Theft 2-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Theft System Problem/Car May Not Restart Message 2-88 . .
Theft-Deterrent Feature, Radio 3-37 . . . . . . . . . . . . . . . . . . . .
Theft-Deterrent System (Vehicle Alarm) 2-15 . . . . . . . . . . . . .
Thermostat 6-22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Third Gear, Automatic Transaxle 2-25 . . . . . . . . . . . . . . . . . . .
Tilt Wheel 2-35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Time, Setting the 3-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tips About Your Audio System 3-38 . . . . . . . . . . . . . . . . . . . .
Tire Chains 6-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire-Loading Information Label 4-30 . . . . . . . . . . . . . . . . . . .
Tires 6-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Alignment and Balance 6-49 . . . . . . . . . . . . . . . . . . . . . . . .
Buying New 6-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing a Flat 5-19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning 6-55 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compact Spare 5-29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inflation Pressure 6-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Rotation 6-45 . . . . . . . . . . . . . . . . . . . . . . . .
Loading 4-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Temperature 6-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Traction 6-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Treadwear 6-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Uniform Quality Grading 6-47 . . . . . . . . . . . . . . . . . . . . . . . Wear Indicators 6
-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheel Replacement 6-49 . . . . . . . . . . . . . . . . . . . . . . . . . . .
When It's Time for New 6-46 . . . . . . . . . . . . . . . . . . . . . . .
Top Speed - Fuel Off Message 2-88 . . . . . . . . . . . . . . . . . . . .
Top Strap 1-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Torque Lock 2-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Torque, Wheel Nut 5-26, 6-70 . . . . . . . . . . . . . . . . . . . . . . . . .
Towing
a Trailer 4
-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recreational Vehicle 4-29 . . . . . . . . . . . . . . . . . . . . . . . . . .
Your Vehicle 5-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Traction
Control System 4
-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control System Warning Light 2-72, 4-9 . . . . . . . . . . . . . .
Engaged Message 2-89 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Off Message 2-89 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ready Message 2-89 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Suspended Message 2-89 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trailer
Brakes 4
-36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Driving on Grades 4-38 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Driving with 4-36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Cooling When Towing 4-39 . . . . . . . . . . . . . . . . . . .
Hitches 4-35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance When Towing 4-39 . . . . . . . . . . . . . . . . . . . . .
Parking on Hills 4-38 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Chains 4-36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tongue Weight 4-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total Weight on Tires 4-35 . . . . . . . . . . . . . . . . . . . . . . . . . .