A-Premium HVAC Heater Blend Door Actuator Set of 2 for GM vehicles — Pair, Direct Replacement

If your Buick, Cadillac, Pontiac or Chevrolet has inconsistent vent temperatures, noisy HVAC movement, or persistent blend-door error symptoms, these actuators are direct-replacement units engineered to match factory fit and function. Sold as a pair, the actuators handle the main blend/air inlet and temperature functions (not mode actuation) so you can address both sides of the system in one repair session.

Which vehicles and years will these actuators fit?

These A-Premium actuators are designed to replace original parts on a range of GM models across the mid-2000s to mid-2010s. Confirm compatibility by cross-referencing the listed reference numbers or your vehicle’s OEM part number.

• Buick: Allure and LaCrosse (2005–2009)
• Cadillac: XLR (2004–2009)
• Pontiac: Grand Prix (2004–2008)
• Chevrolet: Corvette (2005–2013), Impala (2004–2013), Impala Limited (2014–2016), Malibu (2004–2008), Monte Carlo (2004–2007)

What functions do these actuators perform in the HVAC system?

Each actuator moves internal HVAC doors to regulate air temperature and the choice between recirculated and outside air. They are intended for main, air inlet and temperature positions only—not for mode/vent direction handles.

• Controls blend door for hot/cold air mixing
• Operates air inlet to switch between recirculation and fresh air
• Precision gearing for accurate position feedback to the HVAC controller

How do I identify the correct replacement by part number?

Match the actuator’s reference numbers with the OEM or the old unit to ensure a correct swap. A-Premium provides the common cross-reference numbers used by many GM vehicles for easier verification.

• Common cross-references: 604-108, 604108
• OEM-style numbers included: 10325404, 10356910, 15142056, 15249473
• Alternate references: 1573517, 15844096, 22754988, 52409974, 15-73517

What should I expect during installation and performance?

Installation generally requires dashboard access to the HVAC housing and basic hand tools. After replacement, actuators should run quietly, move smoothly through their range, and eliminate incorrect temperature blends or erratic flap behavior.

• Sold as a set of two for replacing both main and temperature/air inlet units
• Plug-and-play electrical connectors compatible with listed GM models
• Durable gearing designed for consistent positional control

Who is this for: The A-Premium set of 2 HVAC heater blend door actuators is intended for DIY mechanics and professional technicians working on compatible Buick, Cadillac, Pontiac, and Chevrolet models who need a reliable, direct-fit replacement for failed temperature or air inlet actuators. Choose this kit when you want a matched pair to tackle both sides of your HVAC blend system at once and restore stable temperature control and air recirculation functions.