Four Seasons 73656 HVAC Mode Door Actuator - Main

Reliable HVAC Mode Door Actuator for GM Trucks and SUVs

The Four Seasons 73656 HVAC Mode Door Actuator is designed to restore proper airflow control in your vehicle's heating and cooling system. Engineered for select Cadillac, Chevrolet, and GMC models, this actuator ensures precise operation of the HVAC air doors.

• Cam-style door linkage for accurate movement
• Three mounting ears for secure installation
• Five terminal pins for reliable electrical connection
• Compatible with multiple GM full-size trucks and SUVs
• Designed specifically as an HVAC air door actuator

Product Details and Specifications

This HVAC mode door actuator from Four Seasons features a cam-type door linkage that provides smooth and consistent control of the air distribution doors within the HVAC system. The actuator mounts securely using three mounting ears, ensuring a stable fit in the HVAC housing. Equipped with five terminal pins, it offers a dependable electrical interface for seamless integration with your vehicle's climate control system. The style is specifically tailored as an HVAC air door actuator, making it suitable for controlling airflow direction in heating and cooling applications.

Compatible Vehicles and Applications

This part number 73656 is compatible with a range of General Motors vehicles, including Cadillac Escalade and Escalade EXT, Chevrolet Avalanche 1500, Silverado 1500, 2500, 3500 series, Suburban 1500 and 2500, Tahoe, and GMC C1500, C2500, C3500, K1500, K2500, K3500, Sierra 1500, 1500 HD, 2500, 2500 HD, 3500, Yukon, Yukon XL 1500, and Yukon XL 2500. It is designed to replace faulty HVAC mode door actuators in these models to restore proper climate control functionality.

Common HVAC Issues Addressed

• Inconsistent or incorrect airflow direction inside the cabin
• Failure of the HVAC system to switch between heating and cooling modes
• Unresponsive or stuck air door movement
• Electrical connection problems causing intermittent HVAC operation
• Noise or clicking sounds from the HVAC air door area

Installation Notes and Tips

When installing the Four Seasons 73656 HVAC Mode Door Actuator, ensure the three mounting ears align properly with the HVAC housing. Verify the five terminal pins are securely connected to avoid electrical issues. It is recommended to test the actuator operation before reassembling the dashboard components. Proper alignment of the cam-style door linkage is critical for smooth door movement and accurate airflow control.

Quality Assurance and Warranty

Four Seasons manufactures this HVAC mode door actuator to meet or exceed OEM specifications for durability and performance. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship. This ensures reliable operation and peace of mind when replacing your vehicle's HVAC components.