Four Seasons 73142 HVAC Mode Door Actuator

HVAC Air Door Actuator for Jeep Grand Cherokee

Restore proper climate control operation with the Four Seasons Air Door Actuator, part number 73142. This HVAC mode door actuator is built for 1999-2004 Jeep Grand Cherokee applications and uses an arm-style door linkage with a 3-ear mounting pattern and 2-terminal pin connection.

Four Seasons 73142 is part of the Air Door Actuator line, a product line focused on HVAC door control components for vehicles that rely on precise air distribution inside the cabin. For Jeep Grand Cherokee owners dealing with inconsistent vent selection or temperature routing, this actuator addresses the mode door function directly.

Key Features

• HVAC mode door actuator for air distribution control
• Arm-style door linkage for the specified application
• 3 mounting ears for secure installation alignment
• 2-terminal pin electrical connection
• Direct-fit application for 1999-2004 Jeep Grand Cherokee
• Four Seasons part number 73142

Detailed Description

This HVAC air door actuator controls the movement of the mode door inside the heating and air conditioning system, helping direct airflow to the correct cabin outlets. It is a direct replacement for the specified Jeep Grand Cherokee years and is commonly searched as a 1999-2004 Jeep Grand Cherokee air door actuator, Jeep Grand Cherokee HVAC mode door actuator, and Four Seasons 73142 replacement actuator. This part cross-references Dayco 73142 for the same application.

Use this actuator when the vehicle needs a replacement for the original mode door control component and the existing unit no longer responds correctly to HVAC commands. The Four Seasons 73142 part number is also referenced in aftermarket interchange listings, including 604016 and 5012728AA.

Common Issues This Part Can Address

• Airflow stuck on one vent position
• Inability to switch between defrost, panel, and floor settings
• Intermittent or nonresponsive HVAC mode changes
• Improper cabin air routing from a worn actuator
• HVAC system not following dash control input

Installation Notes and Tips

Verify the connector style, mounting ear layout, and linkage type before installation. On Jeep Grand Cherokee HVAC repairs, confirm that the mode door moves freely and that the control head is sending the correct command before replacing the actuator. Matching the original arm linkage and 3-ear mounting configuration helps ensure proper fitment for 1999-2004 Jeep Grand Cherokee, and the 73142 actuator should be checked against the removed unit for connector and mounting alignment.

Quality Assurance

Four Seasons supplies HVAC replacement components for vehicle climate control systems, and this actuator is cataloged for the specified Jeep Grand Cherokee fitment. Confirm application by year, model, and connector details before installation.