HomeHVAC > Temperature Controls and Related ComponentsDorman 604-175 HVAC Blend Door Actuator - Floor Console
Part #: 604-175

Dorman 604-175 HVAC Blend Door Actuator - Floor Console

Floor Console
⚙️ 7 vehicles fit this part
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Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Cadillac, STS
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🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Dorman HVAC Blend Door Actuator for Cadillac STS

The Dorman 604-175 HVAC Blend Door Actuator is designed specifically for Cadillac STS models, providing reliable control of your vehicle's heating and cooling system. This actuator features a rotary switch activation type and is constructed from durable plastic to ensure consistent performance.

  • Rotary switch activation type for precise HVAC control
  • Durable plastic construction for long-lasting use
  • Includes one air door actuator per package
  • Compatible with Cadillac STS models
  • OEM-quality replacement part number 604-175

Detailed Product Description

The Dorman 604-175 HVAC Blend Door Actuator is engineered to regulate the blend door within the HVAC system of Cadillac STS vehicles. The rotary switch activation type allows for smooth and accurate adjustment of air temperature by controlling the position of the blend door. Made from high-quality plastic, this actuator resists wear and environmental factors, ensuring dependable operation over time. This part is an exact replacement designed to meet or exceed original equipment specifications, making it suitable for restoring proper HVAC function in your Cadillac STS.

Common Applications and Issues Resolved

  • Restores proper air temperature control in Cadillac STS HVAC systems
  • Eliminates inconsistent or stuck blend door movement
  • Resolves HVAC system noises related to faulty actuators
  • Fixes issues with air not mixing correctly between hot and cold settings
  • Addresses failure of the blend door to respond to temperature adjustments

Installation Notes and Tips

  • Ensure vehicle ignition is off before beginning installation
  • Access the blend door actuator behind the dashboard on Cadillac STS models
  • Disconnect the electrical connector carefully to avoid damage
  • Remove mounting screws and replace with the Dorman 604-175 actuator
  • Test HVAC system operation after installation to confirm proper function

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance for your Cadillac STS. The 604-175 HVAC Blend Door Actuator undergoes rigorous quality control to ensure durability and fitment accuracy. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship.

BrandDorman
Part Number604-175
MaterialPlastic
Package Contents1 Air Door Actuator
Switch Activation TypeRotary

This part fits 7 vehicles. Search below:

YearMakeModelPositionNotes
2011CadillacSTSFloor ConsoleTemperature control HVAC blend door actuator for box packaging.
2010CadillacSTSFloor ConsoleTemperature control HVAC blend door actuator for box packaging.
2009CadillacSTSFloor ConsoleTemperature control HVAC blend door actuator for box packaging.
2008CadillacSTSFloor ConsoleTemperature control HVAC blend door actuator for box packaging.
2007CadillacSTSFloor ConsoleTemperature control HVAC blend door actuator for box packaging.
2006CadillacSTSFloor ConsoleTemperature control HVAC blend door actuator for box packaging.
2005CadillacSTSFloor ConsoleTemperature control HVAC blend door actuator for box packaging.

* 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:

89023391ADS4230

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