GOOACC HVAC Blend Door Actuator 604-112 for Chevy Avalanche

GOOACC 604-112 HVAC blend door actuator is a direct-fit replacement that restores temperature and airflow control for select Chevy, GMC, Cadillac and Hummer vehicles.

If your vehicle’s climate system no longer blends hot and cold air smoothly or vents refuse to change direction, the blend door actuator is a common wear item. This replacement unit (part numbers 604-112, 1573952, 89018374, 604112, 15-73952) is engineered as a durable, plug-and-play swap for many 2003–2014 model-year GM trucks and SUVs. It reinstates motorized control over the HVAC blend door so your cabin temperature and venting respond reliably to the controls.

How will this actuator improve my cabin temperature control?

Replacing a failing actuator returns precise movement to the blend door, allowing the HVAC system to properly mix warm and cold air. That means the temperature you set on the dash will be the temperature felt at the vents, rather than inconsistent or shifting airflow.

• Restores accurate blend-door positioning for consistent temperature output.
• Eliminates delayed or jerky vent response caused by worn gears or motor.
• Matches original electrical connector for straightforward swap.

Which vehicles is this part compatible with?

This GOOACC actuator fits a broad list of GM vehicles across model years primarily between 2003 and 2014. Always compare your old part number or photos before ordering to ensure a match.

• Cadillac Escalade / Escalade ESV / EXT (2003–2014)
• Chevrolet Avalanche, Silverado, Suburban, Tahoe (various 2003–2014 models)
• GMC Sierra, Yukon, Yukon XL (2003–2014 ranges) and Hummer H2 (2008–2009)
• Compatible with OEM numbers 604-112, 1573952, 89018374, 604112, 15-73952.

What are the build and reliability features of this actuator?

GOOACC designed the actuator with reinforced plastics and a quality motor to handle repeated movement and temperature cycling in the HVAC cavity. That helps reduce premature wear and keeps vents operating smoothly.

• High-strength plastic housing resists thermal stress in dash environments.
• Precision motor and gears for predictable movement and low backlash.
• OEM-style connector and mounting pattern for secure fitment.

How do I confirm fit before purchasing and what if another HVAC part is failing?

Verify your old actuator by comparing its shape, connector type and part number with this replacement; photos are helpful. If the Mode Motor Assembly or other HVAC components are damaged, contact GOOACC or a technician for guidance—replacing only the actuator may not fix unrelated failures.

• Compare part numbers and take a photo of the existing actuator and connector.
• Test actuator function before and after installation to confirm issue resolution.
• Contact seller support for help if another HVAC component appears faulty.

Who is this for: This GOOACC blend door actuator is aimed at DIY mechanics, independent garages and owners of compatible GM trucks and SUVs who need a cost-effective, direct-replacement part to restore HVAC temperature and vent control. Choose this unit if you want an OEM-style fit, clear vehicle compatibility across many Chevy, GMC, Cadillac and Hummer models, and technical support for fitment questions.