HomeHVAC > Temperature Controls and Related ComponentsFour Seasons 73000 HVAC Mode Door Actuator - Auxiliary
Part #: 73000

Four Seasons 73000 HVAC Mode Door Actuator - Auxiliary

Air Door Actuator, Auxiliary
⚙️ 2 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Air Door Actuator, Auxiliary
🚗Fitment: Hummer, H2
🔄Easy Returns — Return within 60 days for a full refund
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Reliable HVAC Mode Door Actuator for Hummer H2

The Four Seasons Air Door Actuator 73000 is designed to restore proper HVAC airflow control in your Hummer H2. This HVAC mode door actuator ensures precise operation of the air door linkage, maintaining optimal climate control performance.

  • Compatible with Hummer H2 models
  • HVAC mode door actuator style for accurate air door movement
  • Features a female door linkage connection
  • Equipped with 3 mounting ears for secure installation
  • Includes 5 terminal pins for reliable electrical connection

About the Four Seasons Air Door Actuator Product Line

The Air Door Actuator line by Four Seasons focuses on delivering dependable HVAC components that regulate airflow within vehicle climate control systems. The 73000 actuator is part of this line, engineered to provide consistent and precise control of the HVAC mode doors, which is critical for maintaining the desired cabin temperature and air distribution in your Hummer H2.

Detailed Product Description

This HVAC mode door actuator (part number 73000) is specifically designed for the Hummer H2, ensuring compatibility and proper fitment. It features a female door linkage that interfaces directly with the HVAC system’s air doors. The actuator includes three mounting ears, allowing for stable and secure attachment within the HVAC housing. Additionally, the five terminal pins provide a solid electrical connection to the vehicle’s wiring harness, supporting reliable actuator operation.

Common HVAC Issues Addressed by This Actuator

  • Inconsistent or incorrect air distribution inside the cabin
  • Failure of HVAC mode doors to move or respond properly
  • Unusual noises or clicking sounds from the HVAC system
  • Inability to switch between heating, cooling, or defrost modes
  • Intermittent or complete loss of HVAC airflow control

Installation Notes and Tips

  • Ensure the vehicle is powered off before beginning installation
  • Carefully disconnect the electrical connector from the old actuator
  • Remove the three mounting screws securing the existing actuator
  • Align the female door linkage properly to avoid binding
  • Verify the actuator’s terminal pins are fully seated in the connector
  • Test HVAC system operation before reassembling all panels

Quality Assurance and Warranty

Four Seasons manufactures the Air Door Actuator 73000 to meet OEM specifications for durability and performance. While specific warranty details may vary, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship. This ensures confidence in the actuator’s reliability when installed in your Hummer H2.

BrandFour Seasons
Part Number73000
PositionAir Door Actuator, Auxiliary
Door LinkageFemale
Mounting Ear Qty.3
StyleHVAC Air Door Actuator
Terminal Pin Qty.5

This part fits 2 vehicles. Search below:

YearMakeModelPositionNotes
2009HummerH2AuxiliaryAir Door Actuator
2008HummerH2AuxiliaryAir 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:

157382219130388604186655156173000A27300BDAC1012MT18521

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