Four Seasons 73127 HVAC Blend Door Actuator - Main
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Four Seasons
 Air Door Actuator

Four Seasons 73127 HVAC Blend Door Actuator - Main

Brand Four Seasons 73127
Position Main
Door Linkage Cam
Mounting Ear Qty. 3
Style HVAC Air Door Actuator
Terminal Pin Qty. 4
Product line Air Door Actuator
Fits Chevrolet and GMC · 112 vehicles

Air door actuator. Controls HVAC airflow with a cam-style linkage.

4-pin design. Uses a simple electrical connection for reliable operation.

3 mounting ears. Provides a secure, stable installation.

Cross-references Dayco 73127, 604136 and 1573586 for the same application. See all 9.

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Not what you need? See all HVAC Blend Door Actuator options

Four Seasons 73127 Air Door Actuator

The Four Seasons 73127 HVAC blend door actuator is a direct-fit air door actuator for select Chevrolet Express and GMC Savana vans. It controls the HVAC air door movement that directs airflow through the heating and air conditioning system.

Key Features

  • Brand: Four Seasons Air Door Actuator line
  • Part number: 73127
  • Door linkage style: Cam
  • Mounting ear quantity: 3
  • Terminal pin quantity: 4
  • HVAC air door actuator construction for blend door control

Fitment and Application

  • Fits 2022-2024 Chevrolet Express 2500, Main
  • Fits 2022-2024 Chevrolet Express 3500, Main
  • Fits 2022-2024 GMC Savana 2500, Main
  • Fits 2022-2024 GMC Savana 3500, Main
  • Fits 2003-2021 Chevrolet Express 2500, Main
  • Fits 2003-2021 Chevrolet Express 3500, Main
  • Fits 2003-2021 GMC Savana 2500, Main
  • Fits 2003-2021 GMC Savana 3500, Main
  • Fits 2003-2014 Chevrolet Express 1500, Main
  • Fits 2003-2014 GMC Savana 1500, Main

This part cross-references Dayco 73127 for the same application.

Four Seasons 73127 is used in HVAC systems that need precise blend door movement for temperature control and airflow routing. It serves Chevrolet Express and GMC Savana models across multiple years, including Chevrolet Express 2500, Chevrolet Express 3500, GMC Savana 2500, and GMC Savana 3500 applications.

Common Issues It Can Address

  • Inconsistent cabin temperature from a blend door that does not move correctly
  • Airflow stuck on one vent setting
  • Loss of hot or cold air control at the dash
  • HVAC clicking or actuator noise during mode changes
  • Failure of the air door to respond to climate control commands

Installation Notes and Tips

Verify the connector style, mounting ear layout, and cam linkage before installation. Confirm the vehicle application by year, make, model, and HVAC position, since this part is listed for the Main location on compatible Chevrolet Express and GMC Savana vans. After installation, cycle the HVAC controls to confirm smooth door movement and proper temperature transition.

Quality Assurance

Four Seasons supplies HVAC replacement components for service applications, and this actuator is cataloged under part number 73127 for direct application matching. Use the vehicle fitment details above to confirm the correct replacement before ordering.

Related reading

This part fits 112 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2024ChevroletExpress 2500Main—
2024ChevroletExpress 3500Main—
2024GMCSavana 2500Main—
2024GMCSavana 3500Main—
2023ChevroletExpress 2500Main—
2023ChevroletExpress 3500Main—
2023GMCSavana 2500Main—
2023GMCSavana 3500Main—
2022ChevroletExpress 2500Main—
2022ChevroletExpress 3500Main—
2022GMCSavana 2500Main—
2022GMCSavana 3500Main—
2021ChevroletExpress 2500MainAir Door Actuator
2021ChevroletExpress 3500MainAir Door Actuator
2021GMCSavana 2500MainAir Door Actuator
2021GMCSavana 3500MainAir Door Actuator
2020ChevroletExpress 2500MainAir Door Actuator
2020ChevroletExpress 3500MainAir Door Actuator
2020GMCSavana 2500MainAir Door Actuator
2020GMCSavana 3500MainAir Door Actuator
2019ChevroletExpress 2500MainAir Door Actuator
2019ChevroletExpress 3500MainAir Door Actuator
2019GMCSavana 2500MainAir Door Actuator
2019GMCSavana 3500MainAir Door Actuator
2018ChevroletExpress 2500MainAir Door Actuator
2018ChevroletExpress 3500MainAir Door Actuator
2018GMCSavana 2500MainAir Door Actuator
2018GMCSavana 3500MainAir Door Actuator
2017ChevroletExpress 2500MainAir Door Actuator
2017ChevroletExpress 3500MainAir Door Actuator
2017GMCSavana 2500MainAir Door Actuator
2017GMCSavana 3500MainAir Door Actuator
2016ChevroletExpress 2500MainAir Door Actuator
2016ChevroletExpress 3500MainAir Door Actuator
2016GMCSavana 2500MainAir Door Actuator
2016GMCSavana 3500MainAir Door Actuator
2015ChevroletExpress 2500MainAir Door Actuator
2015ChevroletExpress 3500MainAir Door Actuator
2015GMCSavana 2500MainAir Door Actuator
2015GMCSavana 3500MainAir Door Actuator
2014ChevroletExpress 1500MainAir Door Actuator
2014ChevroletExpress 2500MainAir Door Actuator
2014ChevroletExpress 3500MainAir Door Actuator
2014GMCSavana 1500MainAir Door Actuator
2014GMCSavana 2500MainAir Door Actuator
2014GMCSavana 3500MainAir Door Actuator
2013ChevroletExpress 1500MainAir Door Actuator
2013ChevroletExpress 2500MainAir Door Actuator
2013ChevroletExpress 3500MainAir Door Actuator
2013GMCSavana 1500MainAir Door Actuator
2013GMCSavana 2500MainAir Door Actuator
2013GMCSavana 3500MainAir Door Actuator
2012ChevroletExpress 1500MainAir Door Actuator
2012ChevroletExpress 2500MainAir Door Actuator
2012ChevroletExpress 3500MainAir Door Actuator
2012GMCSavana 1500MainAir Door Actuator
2012GMCSavana 2500MainAir Door Actuator
2012GMCSavana 3500MainAir Door Actuator
2011ChevroletExpress 1500MainAir Door Actuator
2011ChevroletExpress 2500MainAir Door Actuator
2011ChevroletExpress 3500MainAir Door Actuator
2011GMCSavana 1500MainAir Door Actuator
2011GMCSavana 2500MainAir Door Actuator
2011GMCSavana 3500MainAir Door Actuator
2010ChevroletExpress 1500MainAir Door Actuator
2010ChevroletExpress 2500MainAir Door Actuator
2010ChevroletExpress 3500MainAir Door Actuator
2010GMCSavana 1500MainAir Door Actuator
2010GMCSavana 2500MainAir Door Actuator
2010GMCSavana 3500MainAir Door Actuator
2009ChevroletExpress 1500MainAir Door Actuator
2009ChevroletExpress 2500MainAir Door Actuator
2009ChevroletExpress 3500MainAir Door Actuator
2009GMCSavana 1500MainAir Door Actuator
2009GMCSavana 2500MainAir Door Actuator
2009GMCSavana 3500MainAir Door Actuator
2008ChevroletExpress 1500MainAir Door Actuator
2008ChevroletExpress 2500MainAir Door Actuator
2008ChevroletExpress 3500MainAir Door Actuator
2008GMCSavana 1500MainAir Door Actuator
2008GMCSavana 2500MainAir Door Actuator
2008GMCSavana 3500MainAir Door Actuator
2007ChevroletExpress 1500MainAir Door Actuator
2007ChevroletExpress 2500MainAir Door Actuator
2007ChevroletExpress 3500MainAir Door Actuator
2007GMCSavana 1500MainAir Door Actuator
2007GMCSavana 2500MainAir Door Actuator
2007GMCSavana 3500MainAir Door Actuator
2006ChevroletExpress 1500MainAir Door Actuator
2006ChevroletExpress 2500MainAir Door Actuator
2006ChevroletExpress 3500MainAir Door Actuator
2006GMCSavana 1500MainAir Door Actuator
2006GMCSavana 2500MainAir Door Actuator
2006GMCSavana 3500MainAir Door Actuator
2005ChevroletExpress 1500MainAir Door Actuator
2005ChevroletExpress 2500MainAir Door Actuator
2005ChevroletExpress 3500MainAir Door Actuator
2005GMCSavana 1500MainAir Door Actuator
2005GMCSavana 2500MainAir Door Actuator
2005GMCSavana 3500MainAir Door Actuator
2004ChevroletExpress 1500MainAir Door Actuator
2004ChevroletExpress 2500MainAir Door Actuator
2004ChevroletExpress 3500MainAir Door Actuator
2004GMCSavana 1500MainAir Door Actuator
2004GMCSavana 2500MainAir Door Actuator
2004GMCSavana 3500MainAir Door Actuator
2003ChevroletExpress 1500MainAir Door Actuator
2003ChevroletExpress 2500MainAir Door Actuator
2003ChevroletExpress 3500MainAir Door Actuator
2003GMCSavana 1500MainAir Door Actuator
2003GMCSavana 2500MainAir Door Actuator
2003GMCSavana 3500MainAir Door Actuator
Directly replaces or cross-references 9 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Dayco — 7312760413615735866551699524983928901837189018960BDAD1139MT18524