Dorman 604-185 HVAC Blend Door Actuator - Main
OE Quality 60-Day Returns
Dorman

Dorman 604-185 HVAC Blend Door Actuator - Main

Brand Dorman 604-185
Position Main
Material Plastic
Package Contents Actuator
Switch Activation Type Rotary
Fits Chevrolet and GMC · 24 vehicles

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

Rotary activation. Smooth, reliable control for HVAC blend door operation.

Plastic construction. Lightweight actuator built for everyday HVAC use.

Cross-references Standard Ignition ADR156, 25952814 and ADS156 for the same application. See all 4.

$47.21Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Step 2 — Quantity
Order total $47.21
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all HVAC Blend Door Actuator options

HVAC Blend Door Actuator for Equinox and Terrain

Dorman 604-185 is a rotary HVAC blend door actuator built for specific Chevrolet Equinox and GMC Terrain applications. It is engineered to match the quality and performance of the original actuator on the listed vehicles, helping restore proper HVAC door movement for temperature, mode, or air inlet control.

Key Features

  • Rotary switch activation type for HVAC door control
  • Plastic housing for application-specific fitment
  • Direct replacement for the original blend door actuator on listed vehicles
  • Fits 2010-2013 Chevrolet Equinox, Main
  • Fits 2010-2013 GMC Terrain, Main
  • Part number 604-185 for easy identification

Detailed Description

This Dorman HVAC blend door actuator is made for 2010-2013 Chevrolet Equinox and 2010-2013 GMC Terrain models with the listed main HVAC positions. Depending on the vehicle configuration, it applies to air inlet, mode, or temperature control functions, and 2013 applications require a 5-pin connector. The 604-185 actuator is a practical OE-style replacement when the original unit no longer responds correctly to HVAC commands.

This part cross-references Standard Ignition ADR156 for the same application.

Common Problems It Can Help Solve

  • Incorrect cabin temperature control
  • HVAC system stuck on one vent mode
  • Air inlet door not responding properly
  • Clicking or inconsistent actuator movement
  • Loss of proper airflow direction in the dash HVAC system

Installation Notes and Tips

Verify the connector style and HVAC function before ordering, especially on 2013 Chevrolet Equinox and GMC Terrain models with a 5-pin connector. Confirm whether the vehicle uses the air inlet, mode, or temperature actuator position listed in the fitment data. Compare the original unit to Dorman 604-185 before installation to ensure the mounting and electrical connection match.

Quality Assurance

Dorman states that this heater blend door actuator is precision-engineered to match the quality and performance of the original part on the specified vehicle applications. That OE-style focus supports consistent HVAC operation on Chevrolet Equinox and GMC Terrain models covered by the fitment data.

Related reading

This part fits 24 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2013ChevroletEquinoxMainAir Inlet; w/5 Pin Connector; Packaging Type: Box
2013ChevroletEquinoxMainMode; w/5 Pin Connector; Packaging Type: Box
2013ChevroletEquinoxMainTemperature; w/5 Pin Connector; Packaging Type: Box
2013GMCTerrainMainAir Inlet; w/5 Pin Connector; Packaging Type: Box
2013GMCTerrainMainMode; w/5 Pin Connector; Packaging Type: Box
2013GMCTerrainMainTemperature; w/5 Pin Connector; Packaging Type: Box
2012ChevroletEquinoxMainTemperature control HVAC blend door actuator for box packaging.
2012ChevroletEquinoxMainFits vehicles requiring outside air, comes in a box.
2012ChevroletEquinoxMainHVAC Blend Door Actuator for mode selection in box packaging.
2012GMCTerrainMainFits vehicles requiring outside air, comes in a box.
2012GMCTerrainMainHVAC Blend Door Actuator for mode selection in box packaging.
2012GMCTerrainMainTemperature control HVAC blend door actuator for box packaging.
2011ChevroletEquinoxMainTemperature control HVAC blend door actuator for box packaging.
2011ChevroletEquinoxMainFits vehicles requiring outside air, comes in a box.
2011ChevroletEquinoxMainHVAC Blend Door Actuator for mode selection in box packaging.
2011GMCTerrainMainFits vehicles requiring outside air, comes in a box.
2011GMCTerrainMainHVAC Blend Door Actuator for mode selection in box packaging.
2011GMCTerrainMainTemperature control HVAC blend door actuator for box packaging.
2010ChevroletEquinoxMainTemperature control HVAC blend door actuator for box packaging.
2010ChevroletEquinoxMainFits vehicles requiring outside air, comes in a box.
2010ChevroletEquinoxMainHVAC Blend Door Actuator for mode selection in box packaging.
2010GMCTerrainMainFits vehicles requiring outside air, comes in a box.
2010GMCTerrainMainHVAC Blend Door Actuator for mode selection in box packaging.
2010GMCTerrainMainTemperature control HVAC blend door actuator for box packaging.
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Standard Ignition — ADR15625952814ADS156APBDA0264