HVAC Blend Door Actuator Air Inlet Door Actuator Compatible with Chevy Avalanche Suburban Tahoe Silverado 1500 2500 3500 GMC Sierra Yukon XL Hummer H2 Cadillac Escalade OEM#604-112,1573952

Are outside odors, exhaust fumes, or road noise invading your cabin? Does your A/C struggle to cool down on hot days?Your vehicle's climate control relies on a small but essential component: the Air Inlet Door Actuator. This specific actuator controls where the air comes from. It physically moves the inlet door inside your HVAC case to switch between Fresh Air （Outside） and Recirculation （Inside） modes.When this part fails, your comfort and air quality suffer.How It Works:When you press the recirculation button on your control panel （usually a car icon with a turning arrow）, a signal is sent to this actuator. An internal motor engages, turning a series of precision gears to push or pull the inlet door to the correct position—either sealing off outside air for recirculation, or opening it for fresh air.Symptoms of a Bad Air Inlet Door Actuator:Can't Switch Modes: The recirculation button light turns on, but you can still smell outside exhaust or hear road noise （meaning the door isn't closing properly）.Stuck in One Mode: The system is stuck in either fresh air or recirculation mode, regardless of button presses.Clicking Noise: A repetitive clicking or chattering sound from behind the glove box when starting the car or pressing the recirculation button.Poor A/C Performance: Your air conditioner takes too long to cool down because it keeps pulling in hot outside air instead of recirculating cool cabin air.Foggy Windows: Inability to switch to fresh air mode can trap moisture inside, causing windows to fog up.Why Choose Our Air Inlet Door Actuator?Targeted Inlet Control: Specifically engineered for the air inlet door function, ensuring a proper seal when you need recirculation and smooth operation when you need fresh air.Silent Gear Technology: Precision-cut gears and a high-torque motor ensure smooth, quiet operation. No more embarrassing clicking sounds from your dashboardCompatibility Information:OEM: 604-112,1573952, 89018374Compatible with:Chevrolet Silverado 1500 2003-2006Chevrolet Silverado 2500 2003-2006Chevrolet Silverado 3500 2003-2007Chevrolet Tahoe 2003-2010Gmc Sierra 1500 2003-2006Gmc Sierra 2500 2003-2006Gmc Sierra 3500 2003-2007Gmc Yukon 2003-2010Installation is Straightforward:Simply locate the old actuator （commonly found behind the glove box, near the blower motor, or behind the lower dashboard on the passenger side）, remove it （usually a few screws）, unplug the electrical connector, and install the new one. It's a simple fix that makes a huge difference in driving comfort and air quality.Please Note: While this is a common repair, please use the Amazon Confirmed Fit tool （enter your Year, Make, Model, and Engine） to verify that this is the correct actuator for your specific vehicle.

• Part Number: 604-112,1573952, 89018374, engineered to meet Original Equipment specifications for a hassle-free installation. It plugs directly into your vehicle's wiring harness and mounts using factory hardware—no modifications, programming, or special tools required.
• Compatible with: Chevrolet Silverado 1500 2003-2006,Chevrolet Silverado 2500 2003-2006,Chevrolet Silverado 3500 2003-2007,Chevrolet Tahoe 2003-2010,Gmc Sierra 1500 2003-2006,Gmc Sierra 2500 2003-2006,Gmc Sierra 3500 2003-2007,Gmc Yukon 2003-2010,Please check the Fitment list to confirm compatibility with your specific vehicle model.
• Stop Unwanted Odors & Noise: A faulty inlet door actuator can cause outside smells, exhaust fumes, or road noise to enter your cabin. Our precision-engineered replacement ensures a tight seal when in recirculation mode, keeping unwanted elements out.
• Restore Proper Hvac Function: If you're experiencing issues—such as inability to switch between fresh air and recirculation, or air mode getting stuck—this faulty air inlet door actuator is likely the culprit. Replace it to restore full control over your cabin air source.
• Vehicle Tested and 1-year warranty: has undergone on-vehicle testing to ensure proper fit and performance. Replace with a new one unconditionally within one year if any issues arise.