Four Seasons 73073 HVAC Blend Door Actuator - Auxiliary
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Four Seasons
 Air Door Actuator

Four Seasons 73073 HVAC Blend Door Actuator - Auxiliary

Brand Four Seasons 73073
Position Auxiliary
Door Linkage Arm
Mounting Ear Qty. 3
Style HVAC Air Door Actuator
Terminal Pin Qty. 4
Product line Air Door Actuator
Fits Chevrolet, Oldsmobile, and Pontiac · 8 vehicles

Air door actuator. Controls HVAC airflow through the blend door system.

Arm linkage. Uses an arm-style linkage for smooth door movement.

4-pin design. Features a 4-terminal electrical connection.

Cross-references Dayco 73073, Global Parts Distributors LLC 1712275 and 604131 for the same application. See all 10.

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Four Seasons 73073 Air Door Actuator

The Four Seasons 73073 HVAC blend door actuator is built for auxiliary air door control in select GM minivans. It uses an arm-style door linkage, a 4-terminal pin connector, and a 3-ear mounting layout for direct replacement service.

Key Features

  • Brand Line: Four Seasons Air Door Actuator
  • HVAC blend door actuator for auxiliary air door operation
  • Arm-style door linkage
  • 3 mounting ears for secure installation
  • 4-terminal pin electrical connection
  • Cross-reference: Dayco 73073

Detailed Description

Four Seasons part number 73073 is an HVAC air door actuator used to control auxiliary airflow routing in the heating and air conditioning system. It is listed for 2001-2004 Oldsmobile Silhouette and 2001-2004 Pontiac Montana, both in the auxiliary position. If your Oldsmobile Silhouette or Pontiac Montana has inconsistent cabin temperature control, this actuator addresses the blend door movement that directs air through the HVAC case.

This part cross-references Global Parts Distributors LLC 1712275 for the same application. The Four Seasons Air Door Actuator line focuses on replacement components for HVAC door control, and this unit follows the specified arm linkage, mounting ear count, and terminal layout for the listed vehicles.

What It Helps Fix

  • Temperature stuck on hot or cold in the cabin
  • Airflow not changing between HVAC modes as commanded
  • Auxiliary blend door movement that is slow, erratic, or unresponsive
  • Clicking or repeated actuator noise from the HVAC case
  • Loss of proper air distribution in the Oldsmobile Silhouette or Pontiac Montana HVAC system

Installation Notes

Verify the connector style, mounting ear layout, and auxiliary position before installation. Compare the removed actuator to Four Seasons 73073 to confirm the arm linkage and 4-pin terminal configuration match the original unit. After installation, cycle the HVAC controls to allow the system to relearn door positions if required by the vehicle.

Quality Assurance

Four Seasons supplies HVAC replacement parts for service applications, and this actuator is cataloged to the listed fitment for 2001-2004 Oldsmobile Silhouette and 2001-2004 Pontiac Montana. Confirm vehicle year, model, and auxiliary position before ordering.

Related reading

This part fits 8 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2004OldsmobileSilhouetteAuxiliaryAir Door Actuator
2004PontiacMontanaAuxiliaryAir Door Actuator
2003OldsmobileSilhouetteAuxiliaryAir Door Actuator
2003PontiacMontanaAuxiliaryAir Door Actuator
2002OldsmobileSilhouetteAuxiliaryAir Door Actuator
2002PontiacMontanaAuxiliaryAir Door Actuator
2001OldsmobileSilhouetteAuxiliaryAir Door Actuator
2001PontiacMontanaAuxiliaryAir Door Actuator
Directly replaces or cross-references 10 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Dayco — 73073Global Parts Distributors LLC — 1712275604131157279265515281031074710430102A27373BDAC1085MT18525