GOOACC HVAC Blend Door Actuator for GM Trucks & SUVs — 604-112 Direct-Fit Replacement, OEM-Style Durability

GOOACC HVAC Blend Door Actuator 604-112 is a direct-fit replacement blend door motor that restores precise temperature control and reliable airflow in many GM trucks and SUVs.

If the temperature from your vents suddenly shifts from hot to cold or the airflow direction won't change, the blend door actuator may be failing. This GOOACC unit (part numbers 604-112, 1573952, 89018374) is engineered to match OEM fitment for numerous Chevrolet, GMC, Cadillac and Hummer models from the early 2000s through mid-2010s, offering a straightforward swap to bring your HVAC system back to predictable operation.

Which vehicles will this actuator work with?

This GOOACC actuator is built for a broad range of GM platforms. It fits multiple model years across Escalade, Avalanche, Silverado, Suburban, Tahoe, Sierra, Yukon, and H2 lines when the original part number matches.

• Compatible with 2003–2014 Cadillac Escalade (including ESV, EXT)
• Fits 2003–2013 Chevrolet Silverado and Avalanche series, select 1500/2500/3500 and Classic years
• Works on 2003–2014 GMC Sierra and Yukon models, including HD and XL variants
• Includes some H2 models from 2008–2009

How does this actuator improve HVAC performance in my vehicle?

The blend door actuator positions the internal doors that mix heated and cooled air and control fresh or recirculated airflow. A reliable actuator ensures consistent cabin temperature, prevents unexpected temperature swings, and restores smooth vent selection.

• Accurate motor control for stable temperature mixing
• Improved airflow direction when switching vent modes
• Reduces HVAC noise and hesitation caused by failing gears

What are the build quality and longevity features?

GOOACC designed this actuator with durable plastics and upgraded motor internals to withstand frequent HVAC cycles and temperature extremes found in daily driving. The unit aims to provide longer service life compared with worn factory parts.

• High-strength housing resists warping from heat
• Premium motor components for consistent torque and fewer stalls
• Precision gears for accurate door positioning and reduced backlash

How do I confirm fitment and install this part?

Before ordering, compare the old actuator’s part number and connector to the GOOACC unit to ensure compatibility. Installation is typically a dash panel or glovebox area access job and can be handled with basic tools; replacement instructions vary by model.

• Verify old part numbers: 604-112, 1573952, 89018374, 604112, 15-73952
• Match electrical connector shape and mounting screw pattern
• Contact seller if Mode Motor Assembly or other HVAC parts show separate faults

Who is this for: This GOOACC blend door actuator is for owners and mechanics repairing climate control on GM full-size trucks and SUVs from the 2003–2014 era who need a reliable, OEM-style replacement. If you want to fix inconsistent vent temperatures, stop clicking noises behind the dash, or restore proper recirculation and vent mode control, this actuating motor offers a direct-fit option designed for durability and easy swap-in replacement. Remember to confirm your vehicle’s original part number and, if needed, reach out for support on related HVAC components before installation.