OE Quality
60-Day Returns

Dorman 604-136 HVAC Blend Door Actuator - Left Main or Main
Overview of Dorman 604-136 HVAC Blend Door Actuator
The Dorman 604-136 HVAC Blend Door Actuator is designed to provide reliable control of the blend door in your vehicle's heating and cooling system. Specifically engineered for Chevrolet Express and GMC Savana models, this actuator features a rotary switch activation type and durable plastic construction to ensure consistent performance.
- Rotary switch activation for precise blend door control
- Durable plastic material for long-lasting use
- Compatible with Chevrolet Express 1500, 2500, 3500 and GMC Savana 1500, 2500, 3500
- Includes one actuator per package
- OEM-quality replacement part number 604-136
Detailed Product Description
The Dorman 604-136 HVAC Blend Door Actuator is a critical component in the climate control system of select Chevrolet and GMC vans. Its rotary switch activation type allows for smooth and accurate adjustment of the blend door, which regulates the mix of hot and cold air entering the cabin. Constructed from durable plastic, this actuator is designed to withstand the thermal and mechanical stresses typical in HVAC systems. This part is a direct replacement for factory-installed actuators on Chevrolet Express 1500, 2500, 3500 and GMC Savana 1500, 2500, 3500 models, ensuring proper fit and function.
Common Applications and Issues Resolved
- Restores proper airflow temperature control in HVAC systems
- Eliminates inconsistent cabin temperature fluctuations
- Resolves blend door actuator noise or failure symptoms
- Fixes HVAC system error codes related to blend door position
- Improves overall climate control responsiveness
Installation Notes and Tips
Installation of the Dorman 604-136 actuator requires basic automotive HVAC knowledge and tools. It is recommended to disconnect the vehicle battery before beginning to avoid electrical issues. Access to the blend door actuator is typically behind the dashboard on the passenger side. Ensure the actuator is properly aligned with the blend door shaft before securing. After installation, verify actuator operation by cycling the HVAC controls through different temperature settings.
Quality Assurance and Warranty
Dorman parts are manufactured to meet or exceed OEM specifications. The 604-136 HVAC Blend Door Actuator undergoes rigorous quality control to ensure durability and reliable operation. This part is backed by Dorman's limited warranty, providing coverage against defects in material and workmanship for a specified period. Refer to Dorman's warranty documentation for detailed terms and conditions.
| Brand | Dorman |
| Part Number | 604-136 |
| Material | Plastic |
| Package Contents | Actuator |
| Switch Activation Type | Rotary |
This part fits 108 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2023 | Chevrolet | Express 2500 | Main | Packaging Type: Box |
| 2023 | Chevrolet | Express 3500 | Main | Packaging Type: Box |
| 2023 | GMC | Savana 2500 | Main | Packaging Type: Box |
| 2023 | GMC | Savana 3500 | Main | Packaging Type: Box |
| 2022 | Chevrolet | Express 2500 | Main | Packaging Type: Box |
| 2022 | Chevrolet | Express 3500 | Main | Packaging Type: Box |
| 2022 | GMC | Savana 2500 | Main | Packaging Type: Box |
| 2022 | GMC | Savana 3500 | Main | Packaging Type: Box |
| 2021 | Chevrolet | Express 2500 | Main | Packaging Type: Box |
| 2021 | Chevrolet | Express 3500 | Main | Packaging Type: Box |
| 2021 | GMC | Savana 2500 | Main | Packaging Type: Box |
| 2021 | GMC | Savana 3500 | Main | Packaging Type: Box |
| 2020 | Chevrolet | Express 2500 | Main | Packaging Type: Box |
| 2020 | Chevrolet | Express 3500 | Main | Packaging Type: Box |
| 2020 | GMC | Savana 2500 | Main | Packaging Type: Box |
| 2020 | GMC | Savana 3500 | Main | Packaging Type: Box |
| 2019 | Chevrolet | Express 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2019 | Chevrolet | Express 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2019 | GMC | Savana 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2019 | GMC | Savana 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2018 | Chevrolet | Express 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2018 | Chevrolet | Express 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2018 | GMC | Savana 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2018 | GMC | Savana 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2017 | Chevrolet | Express 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2017 | Chevrolet | Express 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2017 | GMC | Savana 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2017 | GMC | Savana 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2016 | Chevrolet | Express 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2016 | Chevrolet | Express 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2016 | GMC | Savana 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2016 | GMC | Savana 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2015 | Chevrolet | Express 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2015 | Chevrolet | Express 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2015 | GMC | Savana 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2015 | GMC | Savana 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2014 | Chevrolet | Express 1500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2014 | Chevrolet | Express 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2014 | Chevrolet | Express 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2014 | GMC | Savana 1500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2014 | GMC | Savana 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2014 | GMC | Savana 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2013 | Chevrolet | Express 1500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2013 | Chevrolet | Express 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2013 | Chevrolet | Express 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2013 | GMC | Savana 1500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2013 | GMC | Savana 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2013 | GMC | Savana 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2012 | Chevrolet | Express 1500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2012 | Chevrolet | Express 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2012 | Chevrolet | Express 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2012 | GMC | Savana 1500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2012 | GMC | Savana 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2012 | GMC | Savana 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2011 | Chevrolet | Express 1500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2011 | Chevrolet | Express 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2011 | Chevrolet | Express 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2011 | GMC | Savana 1500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2011 | GMC | Savana 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2011 | GMC | Savana 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2010 | Chevrolet | Express 1500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2010 | Chevrolet | Express 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2010 | Chevrolet | Express 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2010 | GMC | Savana 1500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2010 | GMC | Savana 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2010 | GMC | Savana 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2009 | Chevrolet | Express 1500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2009 | Chevrolet | Express 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2009 | Chevrolet | Express 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2009 | GMC | Savana 1500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2009 | GMC | Savana 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2009 | GMC | Savana 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2008 | Chevrolet | Express 1500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2008 | Chevrolet | Express 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2008 | Chevrolet | Express 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2008 | GMC | Savana 1500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2008 | GMC | Savana 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2008 | GMC | Savana 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2007 | Chevrolet | Express 1500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2007 | Chevrolet | Express 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2007 | Chevrolet | Express 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2007 | GMC | Savana 1500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2007 | GMC | Savana 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2007 | GMC | Savana 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2006 | Chevrolet | Express 1500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2006 | Chevrolet | Express 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2006 | Chevrolet | Express 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2006 | GMC | Savana 1500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2006 | GMC | Savana 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2006 | GMC | Savana 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2005 | Chevrolet | Express 1500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2005 | Chevrolet | Express 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2005 | Chevrolet | Express 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2005 | GMC | Savana 1500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2005 | GMC | Savana 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2005 | GMC | Savana 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2004 | Chevrolet | Express 1500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2004 | Chevrolet | Express 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2004 | Chevrolet | Express 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2004 | GMC | Savana 1500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2004 | GMC | Savana 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2004 | GMC | Savana 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2003 | Chevrolet | Express 1500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2003 | Chevrolet | Express 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2003 | Chevrolet | Express 3500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2003 | GMC | Savana 1500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2003 | GMC | Savana 2500 | Main | Temperature control HVAC blend door actuator for box packaging. |
| 2003 | GMC | Savana 3500 | Main | Temperature 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.