Four Seasons 73187 HVAC Recirculation Door Actuator

HVAC Recirculation Door Actuator for GM Applications

Four Seasons 73187 is an HVAC recirculation door actuator built for vehicles that use a 5-pin electrical connection, a male door linkage, and a 3-ear mounting pattern. It is used to move the recirculation door inside the HVAC case so the system can switch airflow between outside air and cabin recirculation.

Compatible With 2006-2010 Hummer H3, 2009-2010 Hummer H3T, 2007-2010 Saturn Sky, and 2006-2009 Pontiac Solstice applications that use this air door actuator configuration.

Key Features

• Four Seasons Air Door Actuator line
• Part number 73187
• HVAC air door actuator style for recirculation door control
• Male door linkage
• 3 mounting ears for secure case attachment
• 5 terminal pins for the electrical connector interface

Product Details

This Four Seasons 73187 actuator is a direct HVAC control component for recirculation door operation. It is used in systems that rely on an electric actuator to position the door inside the HVAC housing, helping regulate cabin air routing and system response. This part cross-references ACDelco 604187 for the same application.

Four Seasons Air Door Actuator parts are identified by application-specific fitment and connector style, which helps match the actuator to the vehicle’s HVAC control layout. For buyers searching for a 2006-2010 Hummer H3 recirculation door actuator, a 2007-2010 Saturn Sky HVAC actuator, or a 2006-2009 Pontiac Solstice air door actuator, 73187 is the relevant part number to verify against the original unit.

Common Issues This Part May Address

• Recirculation door stuck in one position
• Inconsistent cabin airflow direction
• HVAC mode changes that do not respond correctly
• Clicking or binding from the actuator area
• Loss of proper recirculation control

Installation Notes and Tips

Verify the connector style, terminal pin count, mounting ear layout, and door linkage before installation. Compare the original actuator to Four Seasons 73187 to confirm the male linkage and 3-ear mounting pattern match the vehicle’s HVAC case. After installation, cycle the HVAC controls to confirm the recirculation door moves smoothly through its full range.

Quality Assurance

Four Seasons supplies HVAC replacement components for service applications, and this actuator is built to match the specified electrical and mounting configuration for the listed vehicles. Confirm fitment by year, make, model, and actuator style before ordering.