YCT HVAC Blend Door Actuator for Chevy GMC Cadillac Hummer 604-112 / 15-73952 — Direct OE Fit, Restores Airflow & Temp Control

YCT HVAC Air Door Actuator 604-112 / 15-73952 is a direct-replacement blend-door actuator designed to restore accurate airflow and temperature control on compatible Chevy, GMC, Cadillac and Hummer vehicles.

This replacement actuator from YCT is manufactured to match the fit and function of original equipment for a range of GM platforms from the early 2000s through the 2010s. Before ordering, confirm your vehicle year, make, model and the part number on your original actuator to ensure compatibility. The actuator is supplied new and intended to swap into the HVAC housing to control the blend/air-door movement that directs heating and cooling inside the cabin.

How do I know this actuator fits my vehicle?

Compatibility is determined by model year and OE part number. Check your vehicle’s year and model against the compatibility list and compare the part number printed on your current actuator with any of the numbers listed for this YCT unit.

• Matches part numbers: 15-73952, 52495593, 89018374, 604-112, 604112.
• Fits Cadillac Escalade 2003–2014 and many Chevrolet/GMC full-size trucks and SUVs 2003–2014.
• Inspect the connector shape and mounting points to confirm a visual match.

What does installing a new blend-door actuator change in my HVAC system?

Replacing a failed actuator restores precise control of air distribution and temperature mixing without altering other HVAC components. You should notice consistent temperature changes and correct vent selection when the actuator is functioning properly.

• Eliminates erratic airflow, incorrect vent selection, or stuck temperature settings caused by a faulty actuator.
• Re-establishes proper motor-driven position feedback for the HVAC control module.
• Designed to replace the original part without requiring modifications.

What are the practical details I should confirm before purchase?

To avoid incorrect orders, verify the OE part number, confirm the connector and mounting orientation, and compare photos of the current part with the YCT unit. Returns are accepted if the part is unused and the package remains undamaged.

• Confirm vehicle make, model and year against the provided compatibility list (Chevy, GMC, Cadillac, Hummer).
• Compare the part number stamped on your old actuator to the listed numbers for a match.
• Keep original packaging intact if you need to return an incompatible item.

How difficult is installation and what tools are typically needed?

Replacement complexity varies by vehicle but most installations are straightforward for a DIYer with basic hand tools. Some dash panel removal or glovebox removal may be required depending on the model to access the actuator location.

• Common tools: Phillips and flat screwdrivers, socket set, trim pry tools.
• Allow about 30–90 minutes depending on access and experience.
• Follow vehicle-specific service instructions to avoid damaging dash panels or connector clips.

Who is this for: This YCT HVAC blend-door actuator is aimed at owners and DIY mechanics of compatible Chevrolet, GMC, Cadillac and Hummer trucks and SUVs who need a reliable direct-fit replacement part. It suits those restoring proper HVAC function, replacing a noisy or non-responsive actuator, or performing routine HVAC repairs while keeping costs lower than dealer parts.