Four Seasons 73700 HVAC Blend Door Actuator - Auxiliary

HVAC Blend Door Actuator for Cadillac CT6

The Four Seasons 73700 HVAC blend door actuator is built for precise air door control in the heating and air conditioning system. It is a direct-fit style replacement for select Cadillac CT6 applications, including auxiliary position coverage for 2019-2020 models and N/A position coverage for 2016-2018 models.

Key Features

• HVAC air door actuator style for blend door control
• Male door linkage for proper connection at the HVAC door
• 3 mounting ears for secure installation alignment
• 6 terminal pins for electrical connection
• Engineered and tested for dependable operation over time
• Four Seasons part number 73700 for easy identification

Product Details

Four Seasons 73700 is an HVAC blend door actuator designed to regulate airflow direction and temperature blend inside the climate control system. In Cadillac CT6 applications, this actuator helps restore proper movement of the HVAC air door so the system can direct conditioned air as intended. Four Seasons backs this part with more than 50 years of mobile A/C experience, and the component is engineered and tested to deliver consistent operation in demanding automotive HVAC service. This part cross-references AC Delco 23350598 for the same application.

Common Symptoms It May Address

• Temperature stuck hot or cold in the cabin
• Inconsistent airflow between vents
• Clicking or ticking noises from behind the dash
• HVAC mode or blend door movement failure
• Loss of proper air mix control in Cadillac CT6 climate systems

Installation Notes

Verify the connector style, terminal pin count, linkage type, and mounting ear layout before installation. Confirm the vehicle position and application match your Cadillac CT6 year and HVAC configuration. After installation, cycle the climate controls to confirm smooth actuator movement and correct temperature response. Fits 2019-2020 Cadillac CT6, Auxiliary. Fits 2016-2018 Cadillac CT6, N/A.

Quality Assurance

Four Seasons states that its products are engineered and tested for years of trouble-free operation. The 73700 is supported by the brand’s long-standing mobile air conditioning experience and is intended as a reliable replacement for select Cadillac CT6 HVAC systems.