Four Seasons 73013 HVAC Recirculation Door Actuator - Right Main

HVAC Air Door Actuator for Manual Climate Control

Restore proper airflow control in the cabin with this Four Seasons Air Door Actuator, part number 73013. It is a direct-fit HVAC recirculation door actuator for vehicles with manual HVAC control, helping the system move the air door for the selected temperature or mode setting.

Four Seasons 73013 is built around a female door linkage, 3 mounting ears, and a 3-pin terminal layout for the listed applications. This HVAC air door actuator is used across a wide range of Chevrolet, GMC, Buick, Cadillac, Pontiac, Oldsmobile, Saab, and Isuzu models, including Trailblazer, Envoy, Silverado, Sierra, Tahoe, and Yukon applications.

Key Features

• Four Seasons Air Door Actuator line
• Part number 73013
• HVAC recirculation door actuator / air door actuator
• Female door linkage
• 3 mounting ears for the specified fitments
• 3-terminal pin connector layout
• Fits manual HVAC control applications listed below

Fitment Details

• Fits 2004-2009 Chevrolet Trailblazer, N/A; ATC relay connector incompatible with HVAC blower motor resistor harness.
• Fits 2004-2009 GMC Envoy, N/A; with manual HVAC control.
• Fits 2005-2009 Saab 9-7x, N/A; fits models with Manual AC.
• Fits 2003-2008 Isuzu Ascender, N/A; ATC relay connector incompatible with HVAC blower motor resistor harness.
• Fits 2004-2007 Buick Rainier, N/A; ATC relay connector incompatible with HVAC blower motor resistor harness.
• Fits 2002-2007 Buick Rendezvous, N/A.
• Fits 2003-2007 Chevrolet Cheyenne, N/A; w/ Manual A/C Control.
• Fits 2007 Chevrolet Silverado 1500, N/A; w/ Manual A/C Control.
• Fits 2007 GMC Sierra 1500, N/A; w/ Manual A/C Control.
• Fits 2001-2006 Chevrolet Tahoe, N/A; with manual HVAC control.
• Fits 2001-2005 Pontiac Aztek, N/A.
• Fits 2001-2004 Oldsmobile Silhouette, N/A.

What It Helps Fix

• Air stuck on one vent setting
• Temperature blend or recirculation door movement problems
• HVAC controls that no longer respond correctly
• Uneven cabin airflow in manual climate systems
• Recirculation door operation issues on listed Chevrolet, GMC, and related platforms

Installation Notes and Tips

Verify the vehicle uses manual HVAC control before ordering. Some listed applications note ATC relay connector incompatibility with the HVAC blower motor resistor harness, so connector style and control type should be checked against the original part. Confirm the door linkage style, mounting ear count, and 3-pin terminal configuration match the removed actuator before installation.

For fitment-based searches, this part is commonly selected for Chevrolet Trailblazer, GMC Envoy, and Chevrolet Silverado HVAC repair work, as well as GMC Sierra and Tahoe manual climate control applications. Four Seasons 73013 is also cross-referenced with Dayco 73013 for the same application.

Quality Assurance

Four Seasons supplies HVAC replacement components for direct-fit service applications. This actuator is specified by its linkage, mounting, and terminal configuration to support accurate replacement on the listed vehicles.