HomeHVAC > Temperature Controls and Related ComponentsFour Seasons 73188 HVAC Mode Door Actuator - Main
Part #: 73188

Four Seasons 73188 HVAC Mode Door Actuator - Main

Air Door Actuator, Main
⚙️ 22 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Air Door Actuator, Main
🚗Fitment: Hummer, Saturn, and Pontiac, H3, H3T, Sky, and Solstice
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Four Seasons Air Door Actuator 73188

The Four Seasons Air Door Actuator 73188 is designed to control HVAC mode doors in select Hummer, Pontiac, and Saturn vehicles. This HVAC mode door actuator ensures precise airflow direction within the climate control system, maintaining comfort and functionality in your vehicle's cabin.

  • Compatible with Hummer H3, H3T, Pontiac Sky, and Saturn Solstice models
  • Features a male door linkage for secure connection
  • Equipped with three mounting ears for stable installation
  • Includes five terminal pins for reliable electrical connectivity
  • Designed specifically as an HVAC air door actuator for mode control

Detailed Product Features and Specifications

The Four Seasons Air Door Actuator 73188 is engineered with a male door linkage that interfaces directly with the HVAC system's mode door, allowing accurate positioning. Its three mounting ears provide a firm and vibration-resistant fit, essential for consistent operation. The actuator includes five terminal pins, ensuring proper electrical connections for signal and power transmission. This actuator style is tailored for HVAC air door control, making it suitable for managing airflow direction in the heating and cooling system of your vehicle.

About the Four Seasons Air Door Actuator Product Line

The Air Door Actuator line by Four Seasons focuses on delivering reliable HVAC components that regulate airflow within vehicle climate systems. This product line includes actuators designed to replace factory-installed parts, maintaining OEM specifications for fit and function. The 73188 actuator is part of this line, providing a direct replacement solution for mode door control in specific Hummer, Pontiac, and Saturn models.

Common Applications and Problem Resolution

  • Restores proper HVAC mode door movement in Hummer H3 and H3T
  • Resolves inconsistent airflow direction in Pontiac Sky climate control
  • Fixes non-responsive HVAC mode doors in Saturn Solstice vehicles
  • Eliminates clicking or failure noises from faulty actuators
  • Improves overall HVAC system performance and cabin comfort

Installation Notes and Tips

When installing the Four Seasons Air Door Actuator 73188, ensure the male door linkage aligns correctly with the HVAC mode door. Secure the actuator using all three mounting ears to prevent movement or vibration. Verify that all five terminal pins are properly connected to the vehicle’s wiring harness to maintain electrical integrity. It is recommended to consult the vehicle’s service manual for specific removal and installation procedures related to the HVAC system.

Quality Assurance and Warranty Information

Four Seasons manufactures the Air Door Actuator 73188 to meet or exceed OEM standards for durability and performance. Each actuator undergoes quality control testing to ensure reliable operation. While specific warranty details may vary, Four Seasons typically offers a limited warranty covering defects in materials and workmanship. Refer to the product packaging or manufacturer documentation for exact warranty terms.

BrandFour Seasons
Part Number73188
PositionAir Door Actuator, Main
Door LinkageMale
Mounting Ear Qty.3
StyleHVAC Air Door Actuator
Terminal Pin Qty.5

This part fits 22 vehicles. Search below:

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

* 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:

1039736515732001712357604188655159473188A60188BDAC1185MT18758

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