Take control of your HVAC airflow with the Dorman - OE Solutions HVAC Blend Door Actuator 604-923, a vacuum-style air inlet air door actuator that moves the air door to its commanded position so the system can select and direct cabin airflow. It drops in as a direct-fit replacement across a wide range of GM cars, vans and medium-duty trucks — including the 1992-1999 Buick LeSabre, 1991-1999 Cadillac DeVille, 1992-2002 Cadillac Eldorado, 1996-2021 Chevrolet Express 2500/3500 and GMC Savana 2500/3500, 2003-2009 Chevrolet and GMC Kodiak/TopKick medium-duty trucks, and 1992-1999 Pontiac Bonneville. See the Buyer's Guide tab for the full list of covered years and models.
- Vacuum-style operation: uses engine vacuum to drive the air inlet air door; cataloged for the MAIN position.
- Direct replacement: engineered to drop in like the original air door actuator on the listed applications and restore proper HVAC operation.
- Position specific: many vehicles use several different HVAC door actuators — review this part's application notes to confirm it matches the location and function of the one you're replacing.
- Durable construction: designed and tested to strict standards to help resist wear and electrical burnout for reliable, long service.
- Trustworthy quality: backed by a team of experts and engineers in the United States with more than a century of experience.
If a failed air door actuator is the cause of your HVAC temperature or airflow trouble, this part replaces it. Interchange: 1996790 · 52453639 · DA1341 · ADA518 · ADR4332
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this actuator do?
It's a vacuum-style air inlet air door actuator that moves the HVAC air door to its commanded position so the system can direct cabin airflow. Dorman lists it for the MAIN position.
Is this the correct actuator for my vehicle?
Many vehicles use several HVAC door actuators for different positions. Check this part's application notes and the Buyer's Guide tab to confirm it matches the location and function you need to replace.
What vehicles does it fit?
GM applications such as the 1992-1999 Buick LeSabre, 1991-1999 Cadillac DeVille, 1996-2021 Chevrolet Express 2500 and GMC Savana 2500, and 1992-1999 Pontiac Bonneville. See the Buyer's Guide for all 33.
Is it vacuum or electric operated?
Dorman describes 604-923 as a vacuum-style air door actuator, so it operates on engine vacuum rather than an electric motor.
What numbers does this part replace?
It cross-references 1996790, 52453639, DA1341, ADA518, and ADR4332.
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