2004 Chevrolet Silverado 2500 HD A/C & Heater Service (ONLINE REPAIR MANUALS)

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We have info for following modifications of 2004 Chevrolet Silverado 2500 HD

  • 2004 Chevrolet Silverado 2500 HD 6.0 V8 GAS, CID:364, Fuel Injection, Aspiration:364, Engine VIN:, Desg:U
  • 2004 Chevrolet Silverado 2500 HD 8.1 V8 GAS, CID:496, Fuel Injection, Aspiration:496, Engine VIN:, Desg:G
  • 2004 Chevrolet Silverado 2500 HD 6.6 V8 DIESEL, CID:400, Fuel Injection, Aspiration:400, Engine VIN:, Desg:1
  • 2004 Chevrolet Silverado 2500 HD 6.6 V8 DIESEL, CID:400, Fuel Injection, Aspiration:400, Engine VIN:, Desg:2
  • 2004 Chevrolet Silverado 2500 HD 6.0 V8 CNG, CID:364, Fuel Injection, Aspiration:364, Engine VIN:, Desg:U

A/C & HEATER SERVICE PROCEDURES FOR 2004 Chevrolet Silverado 2500 HD 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 2004 Chevrolet Silverado 2500 HD cars and light trucks from 1990+

Computer Relearn Procedures -> General Motors Corp. -> 1997-98 -> 1998-2000 -> 1998-99 -> 1999-2001 -> 1999-2002 -> 2.2L & 2.4L Engines -> 2000-02 -> 2000-04 -> 2001-02 -> 2001-04 -> 3.1L, 3.4L, 3800/3.8L, 4.0L & 4.6L Engines -> 3.5L Engine -> 5.7L Engine -> Achieva, Alero, Grand Am & Skylark -> Achieva, Cavalier, Skylark & Sunfire -> Alero & Grand Am -> Alero & Malibu -> Aurora -> Aurora, Bonneville, DeVille, LeSabre & Seville -> Aurora, Bonneville, Grand Prix, LeSabre & Park Avenue -> Auto Learn Passlock Procedure -> Body Control Module (BCM) -> Bonneville -> Bonneville, Eighty Eight, LeSabre, LSS & Park Avenue -> C & K Series w/Diesel Engine -> C & K Trucks w/Diesel Engine -> Camaro & Firebird -> Catera -> Cavalier & Sunfire -> Century -> Century, Grand Prix, Impala, Intrigue, Lumina, Monte Carlo & Regal -> Century, Impala, Intrigue, Monte Carlo & Regal -> Corvette -> Crankshaft Position System Variation Learn -> Cutlass & Malibu -> Dash Integration Module (DIM) -> DeVille -> DeVille, Eldorado & Seville -> EEPROM -> Eldorado -> Engine Control Module (ECM) -> Engine Performance -> Except Park Avenue -> Grand Am -> Grand Prix & Regal -> Impala & Monte Carlo -> Instrument Panel Integration Module (IPM) -> Intrigue -> LeSabre -> Less Tech 2 Or Techline Terminal -> Light Truck & Vans -> Park Avenue -> Passenger Cars -> Passkey Module -> Passlock Learn Procedure -> PCM -> Powertrain Control Module (PCM) -> Powertrain Control Module (PCM) & Vehicle Control Module (VCM) -> Rear Integration Module -> Riviera -> Seville -> T50/T60/T20+ -> TDC Offset Adjustment -> Theft Deterrent System Programming -> VCM -> With Tech 2 -> With Techline Terminal & Scan Tool
Vehicle: 2004 Chevrolet Silverado 2500 HD 8.1 V8 GAS

Passenger Cars

Body Control Module (BCM)
Alero & Grand Am

This procedure must be performed if the BCM, Passlock sensor or PCM is replaced. If BCM is not properly programmed, it will not control all the features properly.

  • Ensure battery is fully charged and ignition switch is in the ON position.
  • Connect a suitably programmed Tech II, or equivalent, scan tool to Data Link Connector (DLC).
  • Access scan tool "Special Functions" menu and follow scan tool instructions to program BCM.
  • If BCM fails to accept the pr...

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A/C & HEATER SERVICE PROCEDURES FOR 2004 Chevrolet Silverado 2500 HD 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 2004 Chevrolet Silverado 2500 HD cars and light trucks from 1990+

Manual Air Conditioning & Heater System Diagnosis & Testing -> Technical Service Bulletins -> Poor Air Conditioning Performance -- Will Not Blow Cold Enough -> 2003 Sierra & Silverado
Vehicle: 2004 Chevrolet Silverado 2500 HD 6.6 V8 DIESEL

2003 Sierra & Silverado

On some of these models equipped with 6.6L diesel engine the air conditioning performance is less than desirable, especially when ambient temperature is more than 90°F.

To correct this condition perform system inspects as follow:

  • Calibrate actuators
  • Inspect lower condenser deflector for proper installation. Deflector should be positioned at lower part of condenser and extend forward into top of front bumper and below two fresh air intake holes.
  • Inspect engine coo...

CLICK HERE TO GET FULL ACCESS TO 2004 Chevrolet Silverado 2500 HD A/C & HEATER SERVICE PROCEDURES

A/C & HEATER SERVICE PROCEDURES FOR 2004 Chevrolet Silverado 2500 HD 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 2004 Chevrolet Silverado 2500 HD cars and light trucks from 1990+

Component Replacement & Adjustment -> Sierra & Silverado -> Technical Service Bulletins -> 2003 Sierra & Silverado -> 2003-04 Sierra & Silverado -> 2004 Sierra & Silverado -> Air Conditioning Inoperative/Intermittent, Blows Warm Air -> Blower Motor Runs Continuously After Vehicle is Turned Off -> Underhood Rattle Noise Heard On Acceleration
Vehicle: 2004 Chevrolet Silverado 2500 HD 6.6 V8 DIESEL

Underhood Rattle Noise Heard On Acceleration

2003-04 Sierra & Silverado

On some of these models there may be an underhood rattle noise heard on acceleration or a sudden loss of air condition system performance.

This condition may be caused by liquid slugging of compressor. This condition may cause an internal failure in compressor.

To correct this condition, proceed as follows:

  • Open hood and inspect compressor for damage and to see if it is seized.
  • Ensure serpentine belt is not damaged or missing.
  • If com...

CLICK HERE TO GET FULL ACCESS TO 2004 Chevrolet Silverado 2500 HD A/C & HEATER SERVICE PROCEDURES

A/C & HEATER SERVICE PROCEDURES FOR 2004 Chevrolet Silverado 2500 HD 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 2004 Chevrolet Silverado 2500 HD cars and light trucks from 1990+

Component Replacement & Adjustment -> Sierra & Silverado -> Evaporator Core, Replace
Vehicle: 2004 Chevrolet Silverado 2500 HD 6.6 V8 DIESEL

  • Remove HVAC module as outlined in "Heating, Ventilation & Air Condition (HVAC) Module, Replace."
  • Remove mount...

CLICK HERE TO GET FULL ACCESS TO 2004 Chevrolet Silverado 2500 HD A/C & HEATER SERVICE PROCEDURES

A/C & HEATER SERVICE PROCEDURES FOR 2004 Chevrolet Silverado 2500 HD 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 2004 Chevrolet Silverado 2500 HD cars and light trucks from 1990+

Electrical Symbol & Wire Color Code Identification -> Wire Color Code Identification -> Domestic Vehicles
Vehicle: 2004 Chevrolet Silverado 2500 HD 8.1 V8 GAS

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CLICK HERE TO GET FULL ACCESS TO 2004 Chevrolet Silverado 2500 HD A/C & HEATER SERVICE PROCEDURES

A/C & HEATER SERVICE PROCEDURES FOR 2004 Chevrolet Silverado 2500 HD 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 2004 Chevrolet Silverado 2500 HD cars and light trucks from 1990+

A/C & Cooling System Maintenance -> General Motors Corp. -> 2003-04 Chevrolet Silverado, Suburban, Tahoe & Cadillac Escalade & GMC Denali, Sierra, Yukon & Yukon XL
Vehicle: 2004 Chevrolet Silverado 2500 HD 6.0 V8 GAS

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CLICK HERE TO GET FULL ACCESS TO 2004 Chevrolet Silverado 2500 HD A/C & HEATER SERVICE PROCEDURES

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