Dorman 973-072 HVAC Blower Motor Resistor - Front

HVAC Blower Motor Resistor Replacement

Dorman 973-072 is a direct replacement HVAC blower motor resistor for vehicles with auxiliary automatic controls and the correct 4- and 2-pin connector layout. It restores blower speed control when the original resistor has burned out, helping bring back proper heating and cooling operation.

Built for select Buick, Cadillac, Oldsmobile, and Pontiac models, this resistor matches the original equipment function and connector style for a straightforward repair. If you are searching for a blower motor resistor for a 1990-1993 Buick LeSabre, Cadillac DeVille, or Pontiac Bonneville, Dorman 973-072 is a direct-fit option.

• Direct replacement for the original HVAC blower motor resistor
• Designed for vehicles with auxiliary automatic controls
• Square connector design with female connector ends
• Blade and Aspa terminal types for OE-style electrical connection
• 3 bolt-hole mounting pattern for secure installation
• No wiring harness included
• Compatible with front-position HVAC applications listed below

Detailed Product Information

Dorman 973-072 is engineered to match the operation and performance of the factory resistor on specific front HVAC systems. It is used in applications that require a 4-pin and 2-pin connector arrangement, making it a fitment-specific solution for select 1990-1993 Buick LeSabre, 1991-1993 Buick Park Avenue, 1990-1993 Cadillac DeVille, and related GM platforms. This part cross-references Four Seasons 35953 for the same application.

Common Problems This Part Can Address

• Blower motor works on only one speed
• Loss of low or medium fan speeds
• Intermittent HVAC fan operation
• Burned or heat-damaged blower resistor
• Poor cabin heating or cooling airflow control

Installation Notes and Tips

Verify connector shape, terminal count, and mounting location before installation. This resistor uses a square female connector design and mounts with three bolt holes. Confirm the vehicle has auxiliary automatic controls and the matching front HVAC configuration before ordering. For best results, inspect the blower motor and connector for heat damage before installing Dorman 973-072.

Quality Assurance

Dorman designs this replacement resistor to match original equipment function and performance on the listed vehicles. The part number 973-072 is built as a direct replacement for the factory-style HVAC blower motor resistor used in the confirmed applications.