Dorman 902-400 HVAC Blend Door

Overview of Dorman 902-400 HVAC Blend Door

The Dorman 902-400 HVAC blend door is designed to regulate airflow and temperature within the heating and air conditioning system of select Buick, Chevrolet, and Pontiac vehicles. This electrically operated blend door ensures precise climate control for models such as the Buick LaCrosse and Chevrolet Impala.

• Constructed from durable metal and plastic materials
• Measures 9.8 inches in length, 2.9 inches in width, and 4.9 inches in height
• Semi-spherical shape for optimal fit and function
• Electrical operation with slip fit mounting for straightforward installation
• Compatible with Buick Allure, Chevrolet Monte Carlo, Pontiac Grand Prix, and other specified models

Detailed Product Description

The Dorman 902-400 blend door combines metal and plastic components to provide a reliable and long-lasting solution for HVAC temperature control systems. Its semi-spherical design allows it to fit precisely within the HVAC housing, ensuring smooth operation without vacuum or cable actuation. The electrical operation mechanism offers consistent performance, making it suitable for vehicles like the Chevrolet Impala Limited and Pontiac Grand Prix. The slip fit mounting simplifies replacement, reducing installation time and effort.

Common Applications and Issues Addressed

• Restores proper airflow direction and temperature mixing in HVAC systems
• Eliminates inconsistent cabin temperature fluctuations
• Resolves blend door actuator failure symptoms
• Prevents unwanted air leaks or noise from the HVAC system
• Improves overall climate control responsiveness in Buick, Chevrolet, and Pontiac models

Installation Notes and Tips

• Ensure vehicle compatibility with Buick Allure, Chevrolet Monte Carlo, Pontiac Grand Prix, and related models before installation
• Disconnect the battery to prevent electrical issues during replacement
• Carefully remove the HVAC housing cover to access the blend door assembly
• Use the slip fit mounting design to align and secure the blend door without forcing components
• Test the HVAC system after installation to confirm proper operation

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing dependable performance for your vehicle’s HVAC system. The 902-400 blend door undergoes rigorous quality checks to ensure durability and fitment accuracy. Warranty coverage details can be obtained from the product documentation or manufacturer resources.