Four Seasons 73156 HVAC Mode Door Actuator

Reliable HVAC Mode Door Actuator for Select GM and Isuzu Vehicles

The Four Seasons Air Door Actuator 73156 is designed to restore proper airflow control in your vehicle's HVAC system. Engineered for compatibility with Buick, Chevrolet, GMC, Isuzu, Oldsmobile, and Saab models, this actuator ensures precise operation of the HVAC mode doors.

Key Features of Four Seasons Air Door Actuator 73156

• Door linkage type: Gear for smooth and consistent movement
• Mounting ear quantity: 3 for secure installation
• Terminal pin quantity: 5 for reliable electrical connections
• Style: HVAC air door actuator designed specifically for mode door control
• Compatible with multiple GM and Isuzu SUVs and trucks

About the Four Seasons Air Door Actuator Product Line

The Air Door Actuator line by Four Seasons focuses on delivering precise control components for vehicle HVAC systems. This product line includes actuators engineered to operate various HVAC doors, such as mode doors, blend doors, and recirculation doors. The 73156 actuator is part of this line, providing dependable gear-driven door linkage and multiple mounting points to ensure proper fit and function in your vehicle’s climate control system.

Detailed Description of Part Number 73156

The Four Seasons Air Door Actuator 73156 features a gear-type door linkage that offers consistent and accurate movement of the HVAC mode door. With three mounting ears, it secures firmly to the HVAC housing, minimizing vibration and ensuring long-term durability. The actuator includes five terminal pins, providing stable electrical connections for reliable operation. This actuator is compatible with a range of vehicles including Buick Rainier, Chevrolet Trailblazer and SSR, GMC Envoy series, Isuzu Ascender and Bravada, Oldsmobile, and Saab 9-7x models.

Common HVAC Issues Addressed by This Actuator

• Inability to switch between HVAC modes such as defrost, floor, and vent
• Unresponsive or stuck HVAC mode doors causing improper airflow
• Intermittent or no movement of the mode door actuator
• HVAC system producing inconsistent cabin temperature distribution
• Electrical connection failures affecting HVAC door operation

Installation Notes and Tips

• Ensure vehicle compatibility by verifying make and model before installation
• Disconnect the battery to prevent electrical shorts during replacement
• Carefully remove the old actuator to avoid damaging HVAC door linkages
• Align the three mounting ears properly for secure fitment
• Check all five terminal pins for corrosion or damage before connecting

Quality Assurance and Warranty Information

Four Seasons manufactures the Air Door Actuator 73156 to meet or exceed OEM specifications for durability and performance. Each actuator undergoes rigorous testing to ensure reliable operation within the HVAC system. While specific warranty details may vary, Four Seasons typically offers a limited warranty covering defects in materials and workmanship to provide confidence in your purchase.