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Dorman 604-318 HVAC Blend Door Actuator - MainOE Quality 60-Day Returns
Part #: 604-318

Dorman 604-318 HVAC Blend Door Actuator - Main

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9 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Cadillac, ATS and CTS
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Dorman 604-318 HVAC Blend Door Actuator

Dorman 604-318 is an HVAC blend door actuator built for specific Cadillac ATS and Cadillac CTS applications. It is engineered to match the fit and operating characteristics of the original heater blend door actuator, with rotary switch activation and a 5-pin male terminal design.

Key Features

  • Rotary switch activation for HVAC blend door control
  • 5-pin male terminal configuration
  • Plastic housing for the actuator assembly
  • Direct replacement style for the original actuator on listed vehicles
  • Fits 2013-2015 Cadillac ATS, Main
  • Fits 2014-2015 Cadillac CTS, Main

Detailed Description

This HVAC heater blend door actuator is designed for the main HVAC mode selection function on select Cadillac models. Dorman 604-318 follows the original actuator’s operating style and electrical layout, helping restore proper movement of the blend door in the HVAC system. For buyers searching for a Cadillac ATS blend door actuator or Cadillac CTS HVAC actuator, this part number provides a vehicle-specific replacement option. This part cross-references GM OE 22799397 for the same application.

Common Problems It May Solve

  • Incorrect air distribution between dash, floor, and defrost outlets
  • HVAC mode door movement that stops responding
  • Clicking or repeated actuator noise from the dash area
  • Temperature or airflow routing that no longer changes as commanded
  • Loss of proper main HVAC blend door control

Installation Notes and Tips

Verify the connector style, terminal count, and vehicle application before installation. This actuator uses a rotary activation design with pin terminals, so matching the electrical connection and mounting location is important for proper operation. Confirm the part location as Main on the vehicle before replacing the original unit.

Quality Assurance

Dorman designs this HVAC blend door actuator to match the quality and performance of the original part on the listed Cadillac applications. It is intended as a direct-fit replacement for the specified years, makes, and models.

BrandDorman
Part Number604-318
MaterialPlastic
Package Contents1 Air Door Actuator
Switch Activation TypeRotary
Terminal GenderMale
Terminal Quantity5
Terminal TypePin

This part fits 9 vehicles. Search below:

YearMakeModelSubmodelBody TypePositionNotes
2015CadillacATSMainHVAC Blend Door Actuator for mode selection in box packaging.
2015CadillacCTSSedanMainHVAC Blend Door Actuator for mode selection in box packaging.
2014CadillacATSMainHVAC Blend Door Actuator for mode selection in box packaging.
2014CadillacCTSBaseSedanMainHVAC Blend Door Actuator for mode selection in box packaging.
2014CadillacCTSPremiumSedanMainHVAC Blend Door Actuator for mode selection in box packaging.
2014CadillacCTSVsportSedanMainHVAC Blend Door Actuator for mode selection in box packaging.
2014CadillacCTSVsport PremiumSedanMainHVAC Blend Door Actuator for mode selection in box packaging.
2014CadillacCTSPerformanceSedanMainHVAC Blend Door Actuator for mode selection in box packaging.
2013CadillacATSMainHVAC Blend Door Actuator for mode selection in 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:

22799397

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

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