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Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2003 Cadillac Deville car and truck repair procedures including Cadillac engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up & drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix your 2003 Cadillac Deville automobile. Try the Automotix DIY solution today!
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We have info for following modifications of 2003 Cadillac Deville

  • 2003 Cadillac Deville 4.6 V8 GAS, CID:281, Fuel Injection, Aspiration:281, Engine VIN:, Desg:Y
  • 2003 Cadillac Deville DHS 4.6 V8 GAS, CID:281, Fuel Injection, Aspiration:281, Engine VIN:, Desg:Y
  • 2003 Cadillac Deville DTS 4.6 V8 GAS, CID:281, Fuel Injection, Aspiration:281, Engine VIN:, Desg:9

A/C & HEATER SERVICE PROCEDURES FOR 2003 Cadillac Deville AUTOMOBILES

Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 2003 Cadillac Deville cars and light trucks from 1990+

Component Replacement & Adjustment -> DeVille -> Thermostat, Replace
Vehicle: 2003 Cadillac Deville DHS 4.6 V8 GAS

  • Drain coolant into suitable container.
  • Remove engine cover and air cleaner.
  • Disconnect radiator hose at thermostat hou...

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A/C & HEATER SERVICE PROCEDURES FOR 2003 Cadillac Deville AUTOMOBILES

Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 2003 Cadillac Deville cars and light trucks from 1990+

Component Replacement & Adjustment -> DeVille -> Technical Service Bulletins -> 2003 DeVille -> Humming Noise With Heater On High & Fan Speed At Med/High
Vehicle: 2003 Cadillac Deville 4.6 V8 GAS

Humming Noise With Heater On High & Fan Speed At Med/High

2003 DeVille

On some of these models built prior VIN 3U156832 there may be a humming noise in the passenger compartment when the heater is on high and the blower motor fan speed is set at medium/high.

This condition may be caused by the position of the Heating, Ventilation and Air Conditioning (HVAC) Module blower motor i...

CLICK HERE TO GET FULL ACCESS TO 2003 Cadillac Deville A/C & HEATER SERVICE PROCEDURES

A/C & HEATER SERVICE PROCEDURES FOR 2003 Cadillac Deville AUTOMOBILES

Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 2003 Cadillac Deville cars and light trucks from 1990+

Serpentine Drive Belt Routing -> Domestic Passenger Cars -> General Motors Corp. & Saturn
Vehicle: 2003 Cadillac Deville DTS 4.6 V8 GAS

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A/C & HEATER SERVICE PROCEDURES FOR 2003 Cadillac Deville AUTOMOBILES

Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 2003 Cadillac Deville cars and light trucks from 1990+

General Service Domestic Vehicles -> 2003-04 -> System Inspection -> Compressor -> Condenser -> Evaporator -> Receiver-Drier/Accumulator -> Refrigerant Line Restrictions -> Thermostatic Expansion Valve
Vehicle: 2003 Cadillac Deville 4.6 V8 GAS

While a detailed diagnostic procedure for all air conditioning systems would be impractical due to the many variations in construction and operation, there are three fundamental components of a total diagnosis:

  • Refrigerant systems must have an adequate, but not excessive charge.
  • Determination must be made whether the refrigerant system is governed by a cycling clutch compressor or by valves which control evaporator pressure.
  • The air distribution system (blower motor, switches, vacuum lines and air ducts) must be operational before checking the ...

CLICK HERE TO GET FULL ACCESS TO 2003 Cadillac Deville A/C & HEATER SERVICE PROCEDURES

A/C & HEATER SERVICE PROCEDURES FOR 2003 Cadillac Deville AUTOMOBILES

Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 2003 Cadillac Deville cars and light trucks from 1990+

Automatic Temperature Control Systems Diagnosis & Testing -> DeVille -> Precautions -> Air Bag System Disarming & Arming -> Battery Ground Cable
Vehicle: 2003 Cadillac Deville 4.6 V8 GAS

Air Bag System Disarming & Arming

Refer to and for air bag system disarming and arming proced...

CLICK HERE TO GET FULL ACCESS TO 2003 Cadillac Deville A/C & HEATER SERVICE PROCEDURES

A/C & HEATER SERVICE PROCEDURES FOR 2003 Cadillac Deville AUTOMOBILES

Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 2003 Cadillac Deville cars and light trucks from 1990+

Air Bag System Precautions -> General Motors Corp. -> Arming -> Light Trucks & Vans -> Passenger Cars
Vehicle: 2003 Cadillac Deville DHS 4.6 V8 GAS

Passenger Cars

Reverse disarming procedures to arm the Supplemental Restraint System, noting the following:

  • Ensure all disconnected SRS electrical connectors are securely connected and routed.
  • Install all removed fuses in proper locations.
  • From a safe position at sides of or below air bag module, Turn ignition switch to ON position and observe Air Bag or SRS warning lamp.
  • On all models except Prizm and 1990 Corvette, warning lamp should flash seven to nine times, then go off.
  • On Prizm models, warning lamp should light for six seconds,...

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Shop online for auto body parts, engines, wheels, lights...

Click here to view more details about 1999 Cadillac Deville Splash Shield, Front, Driver Side1999 Cadillac Deville Splash Shield, Front, Driver Side, A high quality, OE replacement splash shield; Backed by 1-year, unlimited-mileage warranty..

Source: Auto Body Parts Store

$36.98

Click here to view more details about 2005 Cadillac Deville Fog Light, Passenger Side2005 Cadillac Deville Fog Light, Passenger Side.

Source: Auto Body Parts Store

$68.33

Click here to view more details about 1993 Cadillac Deville FWD 15" Aftermarket Wheel Covers1993 Cadillac Deville FWD 15" Aftermarket Wheel Covers, Aftermarket Wheel Covers; 15 Inch; Chrome Finish; ABS Wire;Metal Clip Retention, , .

Source: Wheels / Rims, Mirrors & Lights Store

$69.50

Click here to view more details about 1984 Cadillac Deville V8, 5.7 L, 350 CID Rebuilt Engine1984 Cadillac Deville V8, 5.7 L, 350 CID Rebuilt Engine, Flat lifters, 4-bolt main, optional high-performance engine supplied with flat top pistons, performance cam, 194 intake valve heads, and high volume oil pump., Warranty: 3-Year/100,000 Mile, .

Source: Rebuilt Engines Store

$1,243.00

Click here to view more details1999 Cadillac Deville Used Bumper Bar, Rear, 4DR, White, BASE Without foam, Very Good.

Source: Used Auto Parts Store

$110.00

Click here to view more details2000 Cadillac Deville Used Ignition Switch W/Key, *DO NOT SELL NHTSA RECALL*, Very Good.

Source: Used Auto Parts Store

$61.00
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