LCWRGS Blend Door Actuator 604-112 for 2003–2014 Chevy Silverado — Direct-fit with Updated Circuitry

The LCWRGS 604-112 blend door actuator is a direct-fit HVAC replacement that restores temperature control for 2003–2014 Chevy Silverado and compatible GM trucks by precisely moving the air-mixing doors inside the heater box.

If your vents are stuck on hot or cold, make clicking noises, or fail to change airflow direction, a worn blend door actuator is often the cause. This replacement unit matches factory electrical and mechanical interfaces for a straightforward swap, delivering durable plastic housing and updated circuitry to resist electrical burnout and mechanical wear. It ships as a single actuator with cross-referenced part numbers so you can confirm fitment before installation.

How will this actuator improve my truck's temperature control?

Replacing a failing actuator returns precise movement to the HVAC blend door so the system can regulate cabin temperature according to your settings. The updated internal circuit boards and gears reduce the risk of intermittent operation and noisy clicking.

• Restores accurate hot/cold mixing and vent temperature changes
• Replaces failing gears and electrical components responsible for stuck doors
• Reduces noise and hunting behaviors from a malfunctioning actuator

Which vehicles and part numbers is this compatible with?

This LCWRGS actuator is designed as a direct replacement for many GM models from the early 2000s through 2014, especially Chevy Silverado variants. It cross-references common OEM part numbers to help you confirm compatibility before ordering.

• Fits Chevy Silverado model years including 2003, 2004, 2005, 2008, 2010 and many others
• Also compatible with select Chevy Tahoe, GMC, and Cadillac HVAC systems
• Replace part numbers include 15-73952, 52495593, 89018374, 604-112, 604112

How difficult is installation and recalibration?

Installation is designed for technicians or DIYers familiar with dash work and basic hand tools; no exotic equipment is required. After mounting and connecting the actuator, recalibrating the HVAC system (per vehicle specific procedure) ensures correct door positioning and smooth operation.

• Direct-fit connector and mounting points match factory locations
• Typical install requires basic tools and access behind the dash or glove box
• Recalibration step recommended to align actuator travel and stop points

What build quality and durability features does this unit offer?

The actuator uses a reinforced plastic housing and contemporary circuit boards to minimize wear and electrical failures that cause common HVAC faults. That construction aims to deliver longer service life compared with worn or older OE units.

• Durable plastic housing resists cracking and cabin heat exposure
• High-tech internal electronics reduce risk of electrical burnout
• Packaged as a single unit, ready to install with protective packing

Who is this for: The LCWRGS 604-112 blend door actuator is intended for owners and mechanics working on 2003–2014 Chevy Silverado trucks and compatible GM vehicles who need a reliable, direct-replacement HVAC actuator. If your vehicle exhibits inconsistent vent temperatures, clicking sounds from the dash, or unresponsive air-mix control, this unit offers a practical repair path that restores factory-like operation without major HVAC disassembly. Contact us if you need help confirming fitment or troubleshooting installation steps.