Dorman 604-191 HVAC Blend Door Actuator - Left Main
OE Quality 60-Day Returns
Dorman

Dorman 604-191 HVAC Blend Door Actuator - Left Main

Brand Dorman 604-191
Position Left Main
Material Plastic
Package Contents Actuator
Switch Activation Type Rotary
Fits Chevrolet and Pontiac · 13 vehicles

OE-style replacement. Precision-engineered to match original quality and performance.

Rotary activation. Smoothly controls the blend door with a rotary switch design.

Plastic construction. Lightweight actuator housing for HVAC control applications.

Cross-references Standard Ignition ADR4236, 92192012 and ADA283 for the same application. See all 4.

$41.22Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $41.22
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all HVAC Blend Door Actuator options

Dorman 604-191 HVAC Blend Door Actuator

Dorman 604-191 is a rotary HVAC blend door actuator built for specific Chevrolet and Pontiac applications. It is engineered to match the fit and operating performance of the original heater blend door actuator on the listed vehicles, helping restore accurate cabin temperature control.

Key Features

  • Rotary switch activation type for HVAC blend door operation
  • Plastic housing construction
  • Direct replacement style for the original actuator on listed applications
  • Fits 2011-2017 Chevrolet Caprice, Left Main
  • Fits 2014-2017 Chevrolet SS, Left Main
  • Fits 2008-2009 Pontiac G8, Left Main

Detailed Description

This HVAC heater blend door actuator is made to replace the factory unit on select Chevrolet Caprice, Chevrolet SS, and Pontiac G8 models. Dorman 604-191 uses a rotary activation design and is built to align with the original actuator’s function in the left main position, where it controls blend door movement for temperature regulation inside the cabin. This part cross-references Standard Ignition ADR4236 for the same application.

What It Helps Fix

  • Inconsistent cabin temperature control
  • Air stuck on hot or cold
  • Blend door movement that does not respond correctly
  • HVAC temperature changes that are delayed or inaccurate
  • Actuator noise caused by a worn internal mechanism

Installation Notes and Tips

Verify the vehicle year, make, model, and left main position before ordering. On Chevrolet Caprice, Chevrolet SS, and Pontiac G8 applications, confirm the HVAC system layout and compare the original actuator connector and mounting points before installation. After replacement, cycle the ignition and HVAC controls to allow the system to relearn actuator position if required by the vehicle.

Quality Assurance

Dorman engineers this blend door actuator to match the quality and performance of the original part on the specified vehicles. Part number 604-191 is built for direct-fit replacement use on the listed applications.

Related reading

This part fits 13 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2017ChevroletCapriceLeft MainTemperature control HVAC blend door actuator for box packaging.
2017ChevroletSSLeft MainTemperature control HVAC blend door actuator for box packaging.
2016ChevroletCapriceLeft MainTemperature control HVAC blend door actuator for box packaging.
2016ChevroletSSLeft MainTemperature control HVAC blend door actuator for box packaging.
2015ChevroletCapriceLeft MainTemperature control HVAC blend door actuator for box packaging.
2015ChevroletSSLeft MainTemperature control HVAC blend door actuator for box packaging.
2014ChevroletCapriceLeft MainTemperature control HVAC blend door actuator for box packaging.
2014ChevroletSSLeft MainTemperature control HVAC blend door actuator for box packaging.
2013ChevroletCapriceLeft MainTemperature control HVAC blend door actuator for box packaging.
2012ChevroletCapriceLeft MainTemperature control HVAC blend door actuator for box packaging.
2011ChevroletCapriceLeft MainTemperature control HVAC blend door actuator for box packaging.
2009PontiacG8Left MainTemperature control HVAC blend door actuator for box packaging.
2008PontiacG8Left MainTemperature control HVAC blend door actuator for box packaging.
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Standard Ignition — ADR423692192012ADA283ADS4236