Dorman 902-400 HVAC Blend Door

HVAC Blend Door for GM Air Inlet Control

This Dorman HVAC blend door is built to match the fit and function of the original air inlet door on select Chevrolet, Buick, and Pontiac applications. It uses quality metal and plastic construction with electrical operation for dependable HVAC airflow control in vehicles such as the Chevrolet Impala, Buick LaCrosse, and Pontiac Grand Prix.

• Direct replacement HVAC blend door for specified GM applications
• Electrical operation with slip-fit mounting
• Constructed from metal and plastic for durability
• Black and white finish with semi-spherical shape
• Designed for air inlet door service in factory HVAC systems
• Cross-references OE part number 10321155 for the same application

Detailed Product Overview

Dorman Part Number 902-400 is an HVAC blend door engineered to restore proper air inlet door movement in the heating and air conditioning system. It is shaped and sized to match the original component, with listed dimensions of 9.8 in. length, 2.9 in. width, and 4.9 in. height. The electrical design and slip-fit mounting support factory-style replacement in vehicles that use an electronically controlled HVAC door. This part number 902-400 is a practical choice for Chevrolet Impala, Chevrolet Monte Carlo, Buick Allure, Buick LaCrosse, and Pontiac Grand Prix applications where the original air inlet door has worn or failed.

Compatible Vehicle Fitment

• Fits 2014-2016 Chevrolet Impala Limited, air inlet door
• Fits 2006-2013 Chevrolet Impala, air inlet door
• Fits 2005-2009 Buick Allure, air inlet door
• Fits 2005-2009 Buick LaCrosse, air inlet door
• Fits 2004-2008 Pontiac Grand Prix, air inlet door
• Fits 2006-2007 Chevrolet Monte Carlo, air inlet door
• Fits 2004-2005 Chevrolet Impala, air inlet door; w/Air Conditioning
• Fits 2004-2005 Chevrolet Monte Carlo, air inlet door; w/Air Conditioning

Common Problems This Part Can Address

• HVAC airflow stuck on one temperature setting
• Air inlet door movement failure inside the climate control housing
• Loss of proper cabin air routing through the HVAC system
• Noise or binding from a worn internal HVAC door
• Inconsistent heating and cooling performance in the dash system

Installation Notes and Tips

Verify the vehicle year, make, model, and HVAC configuration before installation. This part uses electrical operation and slip-fit mounting, so confirm the original door style and connector arrangement match the application. For best results, inspect the surrounding HVAC housing and actuator components for wear or damage before reassembly.

Quality Assurance

Dorman designs this HVAC blend door to match original fit and function on the listed applications, using materials selected for reliable performance and durability. Part number 902-400 is intended as a direct replacement solution for factory-style HVAC repair.