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Four Seasons 73164 HVAC Blend Door Actuator - Left or Left Main
| Brand | Four Seasons 73164 |
|---|---|
| Position | Left |
| Door Linkage | Arm |
| Mounting Ear Qty. | 4 |
| Style | HVAC Air Door Actuator |
| Terminal Pin Qty. | 5 |
| Product line | Air Door Actuator |
| Fits | Buick and Cadillac · 12 vehicles |
Air door actuator. Controls HVAC airflow with a blend door actuator design.
Arm linkage. Uses an arm-style linkage for smooth door movement.
5-pin connector. Features a 5-terminal electrical connection.
Cross-references Four Seasons 73164, Global Parts Distributors LLC 1712321 and 604151 for the same application. See all 9.
Four Seasons 73164 HVAC Air Door Actuator
Four Seasons 73164 is an HVAC blend door actuator built for vehicles with arm-style door linkage, a 4-ear mounting pattern, and a 5-terminal electrical connection. It is used in climate control systems to move the air door that directs airflow through the HVAC case.
Compatible With 2006-2011 Buick Lucerne, left, including dual zone climate control recirculation door applications, and 2006-2011 Cadillac DTS, left main. This Four Seasons Air Door Actuator line is focused on direct-fit HVAC control components for specific vehicle applications.
Key Features
- Four Seasons part number 73164
- HVAC blend door actuator for air distribution control
- Arm-style door linkage
- 4 mounting ears for secure installation
- 5-terminal pin electrical connection
- Direct application coverage for Buick Lucerne and Cadillac DTS HVAC systems
Detailed Description
Four Seasons 73164 is an HVAC air door actuator that operates the blend or recirculation door inside the climate control housing. By moving the door linkage, it helps route air through the correct HVAC path for temperature control, recirculation, and cabin airflow management. This part number is listed for 2006-2011 Buick Lucerne left-side applications and 2006-2011 Cadillac DTS left main applications. This part cross-references Global Parts Distributors LLC 1712321 for the same application.
Common Issues This Part May Address
- Incorrect air temperature from the vents
- Airflow stuck on one outlet or mode
- Recirculation door movement problems
- Clicking or repeated actuator noise from the HVAC case
- Loss of proper left-side climate control response
Installation Notes and Tips
Verify the original actuator style, terminal count, mounting ear layout, and door linkage before installation. On Buick Lucerne and Cadillac DTS applications, confirm the left or left main position matches the removed unit and inspect the HVAC door shaft for binding or damage that could affect actuator operation. After installation, cycle the ignition and HVAC controls to allow the system to relearn door position if required by the vehicle.
Quality Assurance
Four Seasons HVAC components are cataloged for specific OE-style applications and built to match the listed fitment and connector requirements for the vehicle platform.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2011 | Buick | Lucerne | Left | Vehicle is compatible with Dual Zone Climate Control for HVAC Recirculation Door Actuator.; Air Door Actuator |
| 2011 | Cadillac | DTS | Left Main | Air Door Actuator |
| 2010 | Buick | Lucerne | Left | Vehicle is compatible with Dual Zone Climate Control for HVAC Recirculation Door Actuator.; Air Door Actuator |
| 2010 | Cadillac | DTS | Left Main | Air Door Actuator |
| 2009 | Buick | Lucerne | Left | Vehicle is compatible with Dual Zone Climate Control for HVAC Recirculation Door Actuator.; Air Door Actuator |
| 2009 | Cadillac | DTS | Left Main | Air Door Actuator |
| 2008 | Buick | Lucerne | Left | Vehicle is compatible with Dual Zone Climate Control for HVAC Recirculation Door Actuator.; Air Door Actuator |
| 2008 | Cadillac | DTS | Left Main | Air Door Actuator |
| 2007 | Buick | Lucerne | Left | Vehicle is compatible with Dual Zone Climate Control for HVAC Recirculation Door Actuator.; Air Door Actuator |
| 2007 | Cadillac | DTS | Left Main | Air Door Actuator |
| 2006 | Buick | Lucerne | Left | Vehicle is compatible with Dual Zone Climate Control for HVAC Recirculation Door Actuator.; Air Door Actuator |
| 2006 | Cadillac | DTS | Left Main | Air Door Actuator |
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