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Dorman 604-189 HVAC Blend Door Actuator - Lower Main, Main or Upper MainOE Quality 60-Day Returns
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Dorman 604-189 HVAC Blend Door Actuator - Lower Main, Main or Upper Main - view 2
Dorman 604-189 HVAC Blend Door Actuator - Lower Main, Main or Upper Main - view 3
Part #: 604-189

Dorman 604-189 HVAC Blend Door Actuator - Lower Main, Main or Upper Main

Main
⚙️ 28 vehicles fit this part
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Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$37.60Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
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✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
✅OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet and Pontiac, Caprice, SS, and G8
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST
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Overview of Dorman HVAC Blend Door Actuator 604-189

The Dorman HVAC Blend Door Actuator 604-189 is designed to provide reliable control of the airflow blend doors in select Chevrolet and Pontiac vehicles. This rotary switch actuator is constructed from durable plastic, ensuring consistent performance in your vehicle's HVAC system.

  • Rotary switch activation type for precise airflow control
  • Durable plastic construction for long-lasting use
  • Compatible with Chevrolet Caprice, Pontiac G8, and Pontiac SS models
  • Includes one actuator per package
  • OEM-quality replacement part number 604-189

Detailed Product Description

This HVAC blend door actuator from Dorman operates using a rotary switch activation mechanism, which allows for smooth and accurate adjustment of the blend door position. Made from high-quality plastic materials, the actuator is engineered to withstand the temperature fluctuations and mechanical stresses typical in automotive HVAC systems. The part number 604-189 is specifically designed to fit Chevrolet Caprice and Pontiac G8 and SS models, ensuring proper fit and function without modification.

Common Applications and Problem Resolution

This actuator is used to control the blend door within the HVAC system, regulating the mix of hot and cold air to maintain the desired cabin temperature. It addresses several common HVAC issues, including:

  • Inconsistent or incorrect cabin temperature regulation
  • Unresponsive or stuck blend door movement
  • Unusual noises coming from the HVAC system
  • Failure of the rotary switch to adjust airflow properly

Installation Notes and Tips

  • Ensure vehicle compatibility with Chevrolet Caprice, Pontiac G8, or Pontiac SS before installation
  • Disconnect the vehicle battery prior to actuator replacement to avoid electrical issues
  • Carefully remove the old blend door actuator to prevent damage to surrounding HVAC components
  • Verify actuator operation after installation by cycling through temperature settings

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications, providing dependable performance for your vehicle's HVAC system. The 604-189 blend door actuator undergoes rigorous quality control to ensure durability and functionality. Warranty coverage details can be obtained from the product documentation or the manufacturer.

BrandDorman
Part Number604-189
MaterialPlastic
Package ContentsActuator
Switch Activation TypeRotary

This part fits 28 vehicles. Search below:

YearMakeModelPositionNotes
2017ChevroletCapriceMainHVAC Blend Door Actuator for mode selection in box packaging.
2017ChevroletCapriceMainFits vehicles requiring outside air, comes in a box.
2017ChevroletSSLower MainHVAC Blend Door Actuator for mode selection in box packaging.
2017ChevroletSSMainFits vehicles requiring outside air, comes in a box.
2017ChevroletSSUpper MainHVAC Blend Door Actuator for mode selection in box packaging.
2016ChevroletCapriceMainHVAC Blend Door Actuator for mode selection in box packaging.
2016ChevroletCapriceMainFits vehicles requiring outside air, comes in a box.
2016ChevroletSSLower MainHVAC Blend Door Actuator for mode selection in box packaging.
2016ChevroletSSMainFits vehicles requiring outside air, comes in a box.
2016ChevroletSSUpper MainHVAC Blend Door Actuator for mode selection in box packaging.
2015ChevroletCapriceMainHVAC Blend Door Actuator for mode selection in box packaging.
2015ChevroletCapriceMainFits vehicles requiring outside air, comes in a box.
2015ChevroletSSLower MainHVAC Blend Door Actuator for mode selection in box packaging.
2015ChevroletSSMainFits vehicles requiring outside air, comes in a box.
2015ChevroletSSUpper MainHVAC Blend Door Actuator for mode selection in box packaging.
2014ChevroletCapriceMainFits vehicles requiring outside air, comes in a box.
2014ChevroletCapriceMainHVAC Blend Door Actuator for mode selection in box packaging.
2014ChevroletSSLower MainHVAC Blend Door Actuator for mode selection in box packaging.
2014ChevroletSSMainFits vehicles requiring outside air, comes in a box.
2014ChevroletSSUpper MainHVAC Blend Door Actuator for mode selection in box packaging.
2013ChevroletCapriceMainHVAC Blend Door Actuator for mode selection in box packaging.
2013ChevroletCapriceMainFits vehicles requiring outside air, comes in a box.
2012ChevroletCapriceMainHVAC Blend Door Actuator for mode selection in box packaging.
2012ChevroletCapriceMainFits vehicles requiring outside air, comes in a box.
2011ChevroletCapriceMainFits vehicles requiring outside air, comes in a box.
2011ChevroletCapriceMainHVAC Blend Door Actuator for mode selection in box packaging.
2009PontiacG8MainFits vehicles requiring outside air, comes in a box.
2008PontiacG8MainFits vehicles requiring outside air, comes in a box.

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

92192011

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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