Dorman 973-408 HVAC Blower Motor Resistor Kit - Front

Dorman 973-408 HVAC Blower Motor Resistor Kit

Dorman 973-408 is an HVAC blower motor resistor kit that replaces an overheated or corroded original resistor and includes the harness pigtail needed for a proper electrical repair. It is a direct-fit solution for select Buick, Chevrolet, Pontiac, and Oldsmobile vehicles with manual climate control.

Key Features

• Includes a blower motor resistor and harness pigtail for connector repair
• Blade terminal type for the specified vehicle applications
• Gasket or seal included for the installation point
• Replacement for heat-damaged or corrosion-affected HVAC resistor circuits
• Fits select 1997-2005 Buick Century and Regal, 2000-2003 Chevrolet Impala and Monte Carlo, and other listed applications

Detailed Description

This HVAC blower motor resistor kit is built for vehicles where the original resistor has failed from heat buildup or connector corrosion. Dorman 973-408 restores blower motor speed control by replacing the resistor and the damaged harness pigtail, helping address common electrical faults in the HVAC blower circuit. It is listed for applications including Buick Century, Buick Regal, Chevrolet Impala, Chevrolet Monte Carlo, Pontiac Grand Prix, Chevrolet Corvette, Oldsmobile Intrigue, Oldsmobile Silhouette, Pontiac Montana, and Pontiac Trans Sport, with notes for vehicles that exclude climate control or use front-position mounting.

This part cross-references Dorman 973-408 with Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Problems This Part Can Help Solve

• Blower motor only works on certain fan speeds
• No cabin airflow from the HVAC system
• Intermittent blower operation caused by a damaged resistor circuit
• Heat-damaged or corroded connector at the resistor harness
• Loss of HVAC fan control in manual climate control systems

Installation Notes and Tips

• Verify the vehicle uses the listed manual climate control configuration before ordering.
• Inspect the blower motor connector and surrounding wiring for heat damage before installation.
• Confirm the mounting location and terminal style match the original part.
• Follow the included instructions for proper resistor and pigtail replacement.
• Check the blower motor for excessive current draw, which can contribute to repeat resistor failure.

Quality Assurance

Dorman supplies replacement electrical and HVAC components engineered to match the original service function for the listed applications. This kit includes the resistor and instructions, with a gasket or seal included for the repair.