Dial in precise cabin temperature with the Dorman - OE Solutions HVAC Blend Door Actuator 604-111. This electric actuator drives the blend door inside the HVAC case, moving the flap that mixes heated and cooled air to set the temperature you select. It installs as a direct-fit replacement across a broad GM-family lineup, including the 2000-2005 Buick LeSabre, 1997-2005 Buick Park Avenue, 2004-2007 Buick Rainier, 2003-2006 Cadillac Escalade, 2002-2009 Chevrolet TrailBlazer, 2002-2009 GMC Envoy, 2003-2008 Isuzu Ascender, and 2005-2009 Saab 9-7X — see the Buyer's Guide tab for the full list of covered years, makes, and models.
- Direct replacement — engineered to drop in like the original air door actuator on the listed applications.
- Position specific — cataloged for the MAIN, AUXILIARY, or LEFT MAIN position; many vehicles use several different HVAC door actuators, so review the 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 life.
- Trustworthy quality — backed by a team of experts and engineers in the United States, with more than a century of experience.
If a failed blend door actuator is the cause of clicking or knocking behind the dash, air temperature that won't change, or airflow stuck on hot or cold, this replaces it. Diagnose the cause before ordering, and confirm the actuator position for your vehicle.
Interchange: 15-72972
1572972 · ADS107 · F04009 · ADA126 · 73004 · 16164972 · 52402599 · 52402611 · 89018375 · DA1051 · SK604111 · ADR107 · GM0613019
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this blend door actuator do?
It's a small electric motor that moves the blend door inside the HVAC case, positioning the flap that mixes heated and cooled air to control your cabin temperature setting.
Which actuator position does 604-111 cover?
It's cataloged for the MAIN, AUXILIARY, or LEFT MAIN position. Vehicles often use several different HVAC door actuators, so review the application notes to match the exact position and function you need.
What are signs my blend door actuator may need replacing?
Clicking or knocking behind the dash, air temperature that won't change, or airflow stuck on hot or cold. These can have other causes, so diagnose the source before replacing.
Will this fit my vehicle?
It's a direct-fit replacement for many GM-family models such as the Suburban, Tahoe, Yukon, Envoy, TrailBlazer, and Saab 9-7X. Check the Buyer's Guide tab and application notes to confirm your year, make, and model.
What part numbers does this actuator replace?
It interchanges with 15-72972, 1572972, ADS107, F04009, ADA126, 73004, 16164972, 52402599, 52402611, 89018375, DA1051, SK604111, ADR107, and GM0613019.
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