Dorman 973-428 HVAC Blower Motor Resistor Kit

Overview of Dorman HVAC Blower Motor Resistor Kit 973-428

The Dorman 973-428 HVAC Blower Motor Resistor Kit is designed specifically for Jeep Commander and Grand Cherokee models. This kit includes a blower motor resistor and a wiring harness, engineered to restore proper blower motor function and ensure reliable HVAC performance.

• Includes 1 blower motor resistor and 1 wiring harness
• Wiring harness length: 6 inches for optimal fit
• Blade terminal type with 4 male terminals
• Single female connector for secure connection
• Two mounting holes for stable installation
• Wiring harness included for direct replacement
• No mounting hardware or gasket/seal included

Detailed Product Description

The Dorman 973-428 blower motor resistor kit is engineered to meet the electrical and mechanical specifications required by Jeep Commander and Grand Cherokee vehicles. The included wiring harness measures 6 inches in length, providing a precise fit for the vehicle’s HVAC system. Featuring blade-type terminals, the kit has four male terminals and one female connector, ensuring a secure and reliable electrical connection. The resistor unit mounts using two mounting holes, designed to align with factory mounting points for straightforward installation. This kit does not include mounting hardware or gaskets, so reusing existing components is recommended if they remain in good condition.

Common Applications and Issues Resolved

• Restores blower motor speed control in Jeep Commander and Grand Cherokee HVAC systems
• Fixes blower motor resistor failures causing blower fan to operate only on high speed or not at all
• Eliminates intermittent blower motor operation due to faulty wiring harness connections
• Addresses overheating or electrical resistance issues within the blower motor circuit
• Improves overall HVAC system reliability and passenger comfort

Installation Notes and Tips

• Ensure vehicle ignition is off before beginning installation
• Disconnect the battery to prevent electrical shorts during replacement
• Use the existing mounting hardware if in good condition, as none is included in the kit
• Verify the wiring harness connector is fully seated to avoid loose connections
• Inspect the blower motor and related components for additional wear or damage during installation

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 973-428 blower motor resistor kit undergoes rigorous quality control to ensure durability and reliable performance in Jeep Commander and Grand Cherokee vehicles. This product is backed by Dorman’s limited warranty, providing coverage against defects in material and workmanship under normal use.