Dorman 973-005 HVAC Blower Motor Resistor

HVAC Blower Motor Resistor for GM Trucks and SUVs

Dorman 973-005 is a direct replacement HVAC blower motor resistor for select Chevrolet, GMC, and Oldsmobile vehicles. It restores proper heater and A/C fan speed control when the original resistor has burned out or failed.

Built to match original equipment operation on supported applications, this resistor is a practical repair for Chevrolet Blazer, Chevrolet S10, GMC Sonoma, GMC Jimmy, and Oldsmobile Bravada models.

Key Features

• Direct replacement HVAC blower motor resistor
• Blade terminal type for the specified vehicle applications
• Designed to match OE operation and performance
• Package contents: blower motor resistor and instructions
• Dorman part number 973-005 for easy identification

Detailed Description

This Dorman blower motor resistor is engineered for vehicles that rely on resistor-based blower speed control. When the factory resistor fails, the HVAC system can lose one or more fan speeds or stop responding correctly. Dorman 973-005 is made to restore normal heating and cooling fan operation on compatible Chevrolet Blazer, Chevrolet S10, GMC Sonoma, GMC Jimmy, and Oldsmobile Bravada applications.

This part cross-references Standard Ignition RU1027 for the same application. It also aligns with common replacement references such as 3A1034 and DR773.

What It Helps Fix

• Blower motor only working on certain speeds
• No cabin airflow from the HVAC fan
• Intermittent heater or A/C blower operation
• Burned or heat-damaged blower resistor failure
• Loss of proper fan speed control in the dash HVAC system

Installation Notes and Tips

Verify the connector style and terminal layout before installation. This resistor uses blade terminals and does not include mounting hardware. Follow the included instructions and inspect the blower motor connector and wiring for heat damage before installing the new part.

Compatible With 1995-2005 Chevrolet Blazer, N/A; 1994-2004 Chevrolet S10, N/A; 1994-2004 GMC Sonoma, N/A; 1995-2001 GMC Jimmy, N/A; 1998-2001 Oldsmobile Bravada, Resistor; and 1996-1997 Oldsmobile Bravada, N/A.

Quality Assurance

Dorman designs replacement components to match the function of the original part on the listed applications. Part number 973-005 is intended for direct-fit service on the specified vehicles and HVAC systems.