Four Seasons 73188 HVAC Mode Door Actuator - Main
OE Quality 60-Day Returns
Four Seasons
 Air Door Actuator

Four Seasons 73188 HVAC Mode Door Actuator - Main

Brand Four Seasons 73188
Position Main
Door Linkage Male
Mounting Ear Qty. 3
Style HVAC Air Door Actuator
Terminal Pin Qty. 5
Product line Air Door Actuator
Fits Hummer, Saturn, and Pontiac · 22 vehicles

Air door actuator. Controls HVAC airflow with a 5-pin, 3-ear design.

Mode door actuator. Directly manages air direction inside the HVAC system.

Cross-references Four Seasons 73188, Global Parts Distributors LLC 1712357 and 604188 for the same application. See all 9.

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Four Seasons 73188 HVAC Mode Door Actuator

The Four Seasons Air Door Actuator, part number 73188, is an HVAC mode door actuator built for vehicles that need precise control of air distribution and recirculation door movement. It is a direct-fit replacement for select Hummer, Saturn, and Pontiac applications, including Hummer H3, Hummer H3T, Saturn Sky, and Pontiac Solstice models.

Key Features

  • Four Seasons Air Door Actuator product line
  • HVAC mode door actuator for air distribution and recirculation door control
  • Male door linkage
  • 3 mounting ears for secure installation
  • 5 terminal pins for electrical connection
  • Cross-reference part number: Global Parts Distributors LLC 1712357

Product Details

Four Seasons 73188 is an HVAC air door actuator used to move the mode or recirculation door inside the climate control system. The male linkage and 5-pin terminal layout support the actuator’s connection to the HVAC control circuit, while the 3-ear mounting style helps it seat in the factory location. This part is listed for 2006-2010 Hummer H3, 2009-2010 Hummer H3T, 2007-2010 Saturn Sky, and 2006-2009 Pontiac Solstice applications. If you are replacing a failed HVAC mode door actuator on a Hummer H3 or Pontiac Solstice, part number 73188 is the direct reference to verify before ordering.

Common Symptoms This Part May Address

  • Airflow stuck on one vent position
  • Recirculation door not responding to HVAC controls
  • Temperature or mode changes not matching the control setting
  • Clicking or repeated movement from the dash HVAC area
  • Inconsistent cabin air distribution in Hummer H3, Hummer H3T, Saturn Sky, or Pontiac Solstice models

Installation Notes

Verify the connector style, door linkage, mounting ear count, and vehicle fitment before installation. Access to the actuator is typically through the HVAC housing, so compare the original unit to Four Seasons 73188 before removal. Confirm the application by year, make, model, and position listed for your vehicle, especially on Hummer H3 and Saturn Sky platforms where HVAC configurations can vary.

Quality Assurance

Four Seasons supplies HVAC replacement components for OE-style service applications. Part number 73188 is cataloged with defined linkage, mounting, and terminal specifications to support accurate replacement selection.

Related reading

This part fits 22 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2010HummerH3N/AHVAC Mode Door Actuator controls recirculation door functionality.; Air Door Actuator
2010HummerH3MainAir Door Actuator
2010HummerH3TN/AHVAC Mode Door Actuator controls recirculation door functionality.; Air Door Actuator
2010HummerH3TMainAir Door Actuator
2010SaturnSkyN/AAir Door Actuator
2009HummerH3N/AHVAC Mode Door Actuator controls recirculation door functionality.; Air Door Actuator
2009HummerH3MainAir Door Actuator
2009HummerH3TN/AHVAC Mode Door Actuator controls recirculation door functionality.; Air Door Actuator
2009HummerH3TMainAir Door Actuator
2009PontiacSolsticeN/AAir Door Actuator
2009SaturnSkyN/AAir Door Actuator
2008HummerH3N/AHVAC Mode Door Actuator controls recirculation door functionality.; Air Door Actuator
2008HummerH3MainAir Door Actuator
2008PontiacSolsticeN/AAir Door Actuator
2008SaturnSkyN/AAir Door Actuator
2007HummerH3N/AHVAC Mode Door Actuator controls recirculation door functionality.; Air Door Actuator
2007HummerH3MainAir Door Actuator
2007PontiacSolsticeN/AAir Door Actuator
2007SaturnSkyN/AAir Door Actuator
2006HummerH3N/AHVAC Mode Door Actuator controls recirculation door functionality.; Air Door Actuator
2006HummerH3MainAir Door Actuator
2006PontiacSolsticeN/AAir Door Actuator
Directly replaces or cross-references 9 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Four Seasons — 73188Global Parts Distributors LLC — 17123576041881573200655159410397365A60188BDAC1185MT18758