Dorman 604-147 HVAC Blend Door Actuator - Main

Dorman 604-147 HVAC Blend Door Actuator

This HVAC blend door actuator is built for specific Buick LeSabre and Pontiac Bonneville applications with manual temperature control systems. Dorman 604-147 is engineered to match the fit and operating performance of the original actuator, helping restore proper air distribution and temperature control.

• Rotary switch activation type for HVAC blend door operation
• Plastic housing construction
• Direct replacement for the original blend door actuator on listed vehicles
• Fits Main position applications with the specified factory HVAC configurations
• Part number 604-147 for easy identification and ordering

Detailed Product Overview

Dorman 604-147 is an HVAC heater blend door actuator designed for precise control of the blend door in the heating and air conditioning system. It is a direct-fit replacement for select 2000-2005 Buick LeSabre models with RPO Code C67 front manual electronic temperature controls and select 2000-2005 Pontiac Bonneville models with manual temperature control. This actuator helps regulate airflow direction and temperature blend inside the cabin, supporting consistent HVAC performance in the Buick LeSabre and Pontiac Bonneville.

This part cross-references Dayco 73043 for the same application.

Common Issues This Part Can Address

• Incorrect cabin temperature output
• Airflow stuck on heat, cool, or defrost settings
• HVAC mode door movement problems
• Clicking or inconsistent actuator operation behind the dash
• Loss of proper temperature blend control in the HVAC system

Installation Notes and Tips

Verify the vehicle’s HVAC control type and factory option codes before installation. This actuator is listed for the Main position and should be matched to the original part location and connector style on the vehicle. Confirm fitment for 2000-2005 Buick LeSabre and 2000-2005 Pontiac Bonneville applications before replacing the existing unit.

Quality Assurance

Dorman designs this replacement actuator to align with the quality and performance of the original blend door actuator used on the specified vehicle years, makes, and models. Part number 604-147 is intended as an OE-style replacement for the listed HVAC applications.