HomeHVAC > Temperature Controls and Related ComponentsFour Seasons 73170 HVAC Blend Door Actuator - Left or Right
Part #: 73170

Four Seasons 73170 HVAC Blend Door Actuator - Left or Right

Air Door Actuator, Left
⚙️ 10 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Air Door Actuator, Left
🚗Fitment: Cadillac, CTS and SRX
🔄Easy Returns — Return within 60 days for a full refund
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Reliable HVAC Blend Door Actuator for Cadillac CTS and SRX

The Four Seasons Air Door Actuator 73170 is designed to restore precise climate control in your Cadillac CTS or SRX. This HVAC blend door actuator ensures smooth operation of your vehicle's air distribution system, maintaining comfort and efficiency.

  • Brand: Four Seasons
  • Brand Line: Air Door Actuator
  • Part Number: 73170
  • Category: HVAC Blend Door Actuator
  • Door Linkage Type: Arm
  • Mounting Ear Quantity: 4
  • Terminal Pin Quantity: 7
  • Style: HVAC air door actuator

Product Line Details: Four Seasons Air Door Actuator

The Four Seasons Air Door Actuator product line focuses on delivering reliable HVAC components that regulate airflow within vehicle climate control systems. This actuator model 73170 is engineered to provide consistent performance by controlling the blend door movement, which adjusts the mix of hot and cold air inside the cabin. It is specifically designed for Cadillac models, ensuring compatibility and proper fitment.

Technical Description and Features

This HVAC blend door actuator features an arm-type door linkage that connects directly to the blend door mechanism, allowing precise control of airflow direction and temperature. The actuator includes four mounting ears for secure installation and seven terminal pins for reliable electrical connections. Its design matches the original equipment specifications for Cadillac CTS and SRX models, ensuring seamless integration with the vehicle’s HVAC system.

Common Applications and Problem Resolution

  • Restores proper blend door movement in Cadillac CTS and SRX HVAC systems
  • Eliminates inconsistent cabin temperature control
  • Resolves issues with air not switching between hot and cold settings
  • Fixes HVAC system noises caused by faulty actuators
  • Prevents failure of climate control functions related to blend door operation

Installation Notes and Tips

When installing the Four Seasons Air Door Actuator 73170, ensure the vehicle’s battery is disconnected to avoid electrical shorts. Carefully remove the old actuator and note the position of the blend door linkage arm. Align the new actuator’s arm linkage and secure it using the four mounting ears. Verify that the seven terminal pins are properly connected to the vehicle’s wiring harness. After installation, test the HVAC system to confirm smooth operation and correct airflow adjustment.

Quality Assurance and Warranty

Four Seasons manufactures the Air Door Actuator 73170 to meet or exceed OEM standards for durability and performance. This part undergoes rigorous quality control to ensure reliable operation in Cadillac CTS and SRX vehicles. Warranty coverage details should be confirmed with the supplier or manufacturer, as they may vary.

BrandFour Seasons
Part Number73170
PositionAir Door Actuator, Left
Door LinkageArm
Mounting Ear Qty.4
StyleHVAC Air Door Actuator
Terminal Pin Qty.7

This part fits 10 vehicles. Search below:

YearMakeModelPositionNotes
2005CadillacCTSLeftTo VIN No. 50155651; Air Door Actuator
2005CadillacCTSRightTo VIN No. 50155651; Air Door Actuator
2005CadillacSRXLeftTo VIN No. 50155499; Air Door Actuator
2005CadillacSRXRightTo VIN No. 50155499; Air Door Actuator
2004CadillacCTSLeftAir Door Actuator
2004CadillacCTSRightAir Door Actuator
2004CadillacSRXLeftAir Door Actuator
2004CadillacSRXRightAir Door Actuator
2003CadillacCTSLeftAir Door Actuator
2003CadillacCTSRightAir Door Actuator

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

1572803171232225740395604157655157673170A60170BDAA1169MT18600

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.