Dorman 604-108 HVAC Blend Door Actuator - Left Main, Main or Right Main

OE-Style HVAC Blend Door Actuator

Dorman 604-108 is a heater blend door actuator built to match the quality and performance of the original unit on specific vehicles. It uses a rotary switch activation design and a plastic housing to restore HVAC door movement for temperature and air inlet control.

Compatible with Chevrolet Impala, Chevrolet Corvette, Chevrolet Malibu, Pontiac Grand Prix, Buick LaCrosse, Buick Allure, Cadillac XLR, and Chevrolet Monte Carlo applications listed below, this Dorman 604-108 replacement is a direct-fit solution for common HVAC control concerns.

• Rotary switch activation for blend door operation
• Plastic construction for OE-style fit and function
• Direct replacement for select temperature and air inlet actuator locations
• Fits Main, Left Main, and Right Main positions depending on vehicle application
• Cross-references Standard Ignition ADR106 for the same application

Fitment Details

• Fits 2014-2016 Chevrolet Impala Limited, Main — After Installation The Re-calibration Procedure Is Required; Air Inlet
• Fits 2014-2016 Chevrolet Impala Limited, Main — After Installation The Re-calibration Procedure Is Required; Temperature
• Fits 2012-2013 Chevrolet Corvette, Left Main — After Installation The Re-calibration Procedure Is Required; Temperature
• Fits 2005-2013 Chevrolet Corvette, Main — After Installation The Re-calibration Procedure Is Required; Air Inlet
• Fits 2012-2013 Chevrolet Corvette, Right Main — After Installation The Re-calibration Procedure Is Required; Temperature
• Fits 2004-2013 Chevrolet Impala, Main — After Installation The Re-calibration Procedure Is Required; Air Inlet
• Fits 2004-2013 Chevrolet Impala, Main — After Installation The Re-calibration Procedure Is Required; Temperature
• Fits 2005-2011 Chevrolet Corvette, Main — After Installation The Re-calibration Procedure Is Required; Temperature
• Fits 2005-2009 Buick Allure, Main — After Installation The Re-calibration Procedure Is Required; Air Inlet
• Fits 2005-2009 Buick Allure, Main — After Installation The Re-calibration Procedure Is Required; Temperature
• Fits 2005-2009 Buick LaCrosse, Main — After Installation The Re-calibration Procedure Is Required; Air Inlet
• Fits 2005-2009 Buick LaCrosse, Main — After Installation The Re-calibration Procedure Is Required; Temperature
• Fits 2004-2009 Cadillac XLR, Main — After Installation The Re-calibration Procedure Is Required; Air Inlet
• Fits 2004-2009 Cadillac XLR, Main — After Installation The Re-calibration Procedure Is Required; Temperature
• Fits 2004-2008 Chevrolet Malibu, Main — After Installation The Re-calibration Procedure Is Required; Air Inlet
• Fits 2004-2008 Chevrolet Malibu, Main — After Installation The Re-calibration Procedure Is Required; Temperature
• Fits 2004-2008 Pontiac Grand Prix, Main — After Installation The Re-calibration Procedure Is Required; Air Inlet
• Fits 2004-2008 Pontiac Grand Prix, Main — After Installation The Re-calibration Procedure Is Required; Temperature
• Fits 2004-2007 Chevrolet Monte Carlo, Main — After Installation The Re-calibration Procedure Is Required; Air Inlet
• Fits 2004-2007 Chevrolet Monte Carlo, Main — After Installation The Re-calibration Procedure Is Required; Temperature

What This Actuator Helps Fix

• Inconsistent cabin temperature control
• HVAC doors that stay stuck in one position
• Airflow that does not switch correctly between inlet or temperature settings
• Clicking or binding from a worn blend door actuator
• Loss of proper climate control response in Chevrolet Impala, Chevrolet Corvette, and related GM vehicles

Installation Notes

After installation, the recalibration procedure is required on the listed applications. Verify the position and HVAC function before final assembly, and confirm the actuator matches the vehicle’s original location and control type. Dorman 604-108 is intended for the specific fitments shown above, including Chevrolet Impala, Chevrolet Corvette, and other GM models listed in the fitment table.

Quality Assurance

Dorman engineers this HVAC blend door actuator to align with the original part’s quality and performance on the specified vehicles. The part number 604-108 is also referenced by Standard Ignition ADR106 for the same application.