Dorman 604-113 HVAC Blend Door Actuator - Main

Brand Dorman 604-113
Position Main
Material Plastic
Package Contents Actuator
Switch Activation Type Rotary
Fits Cadillac, Chevrolet, and GMC · 52 vehicles

OE-style replacement. Precision-engineered to match original performance.

Rotary design. Provides smooth control of the blend door.

Plastic construction. Lightweight actuator built for HVAC use.

Cross-references Autotecnica GM0613055, Four Seasons 73003 and SKP SK604113 for the same application. See all 8.

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HVAC Blend Door Actuator for GM Trucks and SUVs

Dorman 604-113 is an HVAC blend door actuator built for specific 1999-2002 GM trucks and SUVs. It uses a rotary switch activation type and a plastic housing to match the original actuator’s function in the HVAC system.

Compatible With Chevrolet Silverado, Tahoe, Suburban, Avalanche, and GMC Sierra, Yukon applications listed below, this Dorman 604-113 replacement is engineered to restore blend door movement for mode selection in the HVAC box.

Key Features

  • Rotary actuator design for HVAC blend door control
  • Plastic construction
  • Direct replacement style for specific GM applications
  • Matches original actuator function on listed vehicles
  • Package contents: actuator

Detailed Description

This HVAC heater blend door actuator is precision-engineered to match the quality and performance of the original blend door actuator on specific vehicle years, makes, and models. It is used in the HVAC system to move the blend door for mode selection, helping direct airflow through the proper vents. Dorman 604-113 is a practical replacement for GM trucks and SUVs that need accurate HVAC door control, including Chevrolet Silverado, Tahoe, and GMC Sierra applications.

This part cross-references Four Seasons 73003 for the same application.

What It Helps Fix

  • HVAC air not switching correctly between vent, floor, and defrost modes
  • Stuck or inconsistent blend door movement
  • Loss of proper airflow direction in the cabin
  • Actuator noise from a worn internal motor or gear set
  • Temperature or mode control issues tied to the HVAC box

Installation Notes and Tips

Verify the vehicle’s HVAC system and actuator location before installation. Access is typically through the HVAC housing, and the replacement should be matched to the listed application and position. Confirm connector style, mounting points, and calibration requirements for the vehicle before final assembly.

Quality Assurance

Dorman designs this blend door actuator to match original equipment function on the listed applications. Part number 604-113 is built for specific GM fitments and is supported by Dorman’s OE-style replacement approach.

Compatible Vehicles

  • Fits 2002 Cadillac Escalade, Main
  • Fits 2002 Cadillac Escalade EXT, Main
  • Fits 2002 Chevrolet Avalanche 1500, Main
  • Fits 2002 Chevrolet Avalanche 2500, Main
  • Fits 1999-2002 Chevrolet Silverado 1500, Main
  • Fits 2001-2002 Chevrolet Silverado 1500 HD, Main
  • Fits 1999-2002 Chevrolet Silverado 2500, Main
  • Fits 2001-2002 Chevrolet Silverado 2500 HD, Main
  • Fits 2001-2002 Chevrolet Silverado 3500, Main
  • Fits 2000-2002 Chevrolet Suburban 1500, Main
  • Fits 2000-2002 Chevrolet Suburban 2500, Main
  • Fits 2000-2002 Chevrolet Tahoe, Main
  • Fits 1999-2002 GMC Sierra 1500, Main
  • Fits 2001-2002 GMC Sierra 1500 HD, Main
  • Fits 1999-2002 GMC Sierra 2500, Main
  • Fits 2001-2002 GMC Sierra 2500 HD, Main
  • Fits 2001-2002 GMC Sierra 3500, Main
  • Fits 2000-2002 GMC Yukon, Main
  • Fits 2000-2002 GMC Yukon XL 1500, Main
  • Fits 2000-2002 GMC Yukon XL 2500, Main
This part fits 52 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2002CadillacEscaladeMainHVAC Blend Door Actuator for mode selection in box packaging.
2002CadillacEscalade EXTMainHVAC Blend Door Actuator for mode selection in box packaging.
2002ChevroletAvalanche 1500MainHVAC Blend Door Actuator for mode selection in box packaging.
2002ChevroletAvalanche 2500MainHVAC Blend Door Actuator for mode selection in box packaging.
2002ChevroletSilverado 1500MainHVAC Blend Door Actuator for mode selection in box packaging.
2002ChevroletSilverado 1500 HDMainHVAC Blend Door Actuator for mode selection in box packaging.
2002ChevroletSilverado 2500MainHVAC Blend Door Actuator for mode selection in box packaging.
2002ChevroletSilverado 2500 HDMainHVAC Blend Door Actuator for mode selection in box packaging.
2002ChevroletSilverado 3500MainHVAC Blend Door Actuator for mode selection in box packaging.
2002ChevroletSuburban 1500MainHVAC Blend Door Actuator for mode selection in box packaging.
2002ChevroletSuburban 2500MainHVAC Blend Door Actuator for mode selection in box packaging.
2002ChevroletTahoeMainHVAC Blend Door Actuator for mode selection in box packaging.
2002GMCSierra 1500MainHVAC Blend Door Actuator for mode selection in box packaging.
2002GMCSierra 1500 HDMainHVAC Blend Door Actuator for mode selection in box packaging.
2002GMCSierra 2500MainHVAC Blend Door Actuator for mode selection in box packaging.
2002GMCSierra 2500 HDMainHVAC Blend Door Actuator for mode selection in box packaging.
2002GMCSierra 3500MainHVAC Blend Door Actuator for mode selection in box packaging.
2002GMCYukonMainHVAC Blend Door Actuator for mode selection in box packaging.
2002GMCYukon XL 1500MainHVAC Blend Door Actuator for mode selection in box packaging.
2002GMCYukon XL 2500MainHVAC Blend Door Actuator for mode selection in box packaging.
2001ChevroletSilverado 1500MainHVAC Blend Door Actuator for mode selection in box packaging.
2001ChevroletSilverado 1500 HDMainHVAC Blend Door Actuator for mode selection in box packaging.
2001ChevroletSilverado 2500MainHVAC Blend Door Actuator for mode selection in box packaging.
2001ChevroletSilverado 2500 HDMainHVAC Blend Door Actuator for mode selection in box packaging.
2001ChevroletSilverado 3500MainHVAC Blend Door Actuator for mode selection in box packaging.
2001ChevroletSuburban 1500MainHVAC Blend Door Actuator for mode selection in box packaging.
2001ChevroletSuburban 2500MainHVAC Blend Door Actuator for mode selection in box packaging.
2001ChevroletTahoeMainHVAC Blend Door Actuator for mode selection in box packaging.
2001GMCSierra 1500MainHVAC Blend Door Actuator for mode selection in box packaging.
2001GMCSierra 1500 HDMainHVAC Blend Door Actuator for mode selection in box packaging.
2001GMCSierra 2500MainHVAC Blend Door Actuator for mode selection in box packaging.
2001GMCSierra 2500 HDMainHVAC Blend Door Actuator for mode selection in box packaging.
2001GMCSierra 3500MainHVAC Blend Door Actuator for mode selection in box packaging.
2001GMCYukonMainHVAC Blend Door Actuator for mode selection in box packaging.
2001GMCYukon XL 1500MainHVAC Blend Door Actuator for mode selection in box packaging.
2001GMCYukon XL 2500MainHVAC Blend Door Actuator for mode selection in box packaging.
2000ChevroletSilverado 1500MainHVAC Blend Door Actuator for mode selection in box packaging.
2000ChevroletSilverado 2500MainHVAC Blend Door Actuator for mode selection in box packaging.
2000ChevroletSuburban 15005.3LV8MainHVAC Blend Door Actuator for mode selection in box packaging.
2000ChevroletSuburban 2500MainHVAC Blend Door Actuator for mode selection in box packaging.
2000ChevroletTahoe5.3LV8MainHVAC Blend Door Actuator for mode selection in box packaging.
2000ChevroletTahoe4.8LV8MainHVAC Blend Door Actuator for mode selection in box packaging.
2000GMCSierra 1500MainHVAC Blend Door Actuator for mode selection in box packaging.
2000GMCSierra 2500MainHVAC Blend Door Actuator for mode selection in box packaging.
2000GMCYukon5.3LV8MainHVAC Blend Door Actuator for mode selection in box packaging.
2000GMCYukon4.8LV8MainHVAC Blend Door Actuator for mode selection in box packaging.
2000GMCYukon XL 15005.3LV8MainHVAC Blend Door Actuator for mode selection in box packaging.
2000GMCYukon XL 2500MainHVAC Blend Door Actuator for mode selection in box packaging.
1999ChevroletSilverado 1500MainHVAC Blend Door Actuator for mode selection in box packaging.
1999ChevroletSilverado 2500MainHVAC Blend Door Actuator for mode selection in box packaging.
1999GMCSierra 1500MainHVAC Blend Door Actuator for mode selection in box packaging.
1999GMCSierra 2500MainHVAC Blend Door Actuator for mode selection in box packaging.
Directly replaces or cross-references 8 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Autotecnica — GM0613055Four Seasons — 73003SKP — SK604113TechSmart — F0402015-72505604113 52473356ADS118