Restore proper HVAC temperature control with the Dorman - OE Solutions HVAC Blend Door Actuator 604-951. This temperature air door actuator drives the blend door that regulates airflow across the heater core, and it drops in as a direct-fit replacement for the 1997-2002 and 2004-2009 Chevrolet T6500, 1997-2002 and 2004-2009 Chevrolet T7500, 2004-2009 Chevrolet T8500, 1997-2002 and 2004-2009 GMC T6500, 1997-2002 and 2004-2009 GMC T7500, 2000-2004 Isuzu FRR, 1996-2002 Isuzu FSR, 1996-2009 Isuzu FTR, 1996-2009 Isuzu FVR, and 2004-2009 Isuzu FXR (see the Buyer's Guide tab for engine-level details).
- Direct replacement: engineered to install like the original air door actuator on the listed applications and restore proper HVAC operation.
- Position specific: many vehicles use several HVAC door actuators for different positions and functions — review the application notes to confirm this part matches the actuator you need to replace.
- Durable construction: designed and tested to strict standards to help resist wear and electrical burnout for reliable operation and long service life.
- Trustworthy quality: backed by a team of experts and engineers in the United States and more than a century of experience.
Interchange: 1835798300 · 8972213110 · 97721515 · 1835798301 · DA1360
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this blend door actuator do?
It's the temperature air door actuator that moves the blend door to regulate airflow across the heater core, controlling the temperature of the air coming from your HVAC system.
Will this actuator fit my vehicle?
It's a direct-fit replacement for the listed Chevrolet, GMC, and Isuzu medium-duty trucks. Check the Buyer's Guide tab and confirm your exact year, make, and model.
Many vehicles use more than one actuator — how do I know this is the right one?
Vehicles often have several HVAC door actuators for different positions and functions. Review this part's application notes to verify it matches the location and function of the actuator you're replacing.
What are common signs this actuator may need replacing?
Signs may include air temperature that won't change, a clicking or knocking noise behind the dash, or air blending that no longer responds to the temperature setting.
What numbers does this part interchange with?
It replaces interchange numbers 1835798300, 8972213110, 97721515, 1835798301, and DA1360.
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