Dorman 973-434 HVAC Blower Motor Resistor Kit

HVAC Blower Motor Resistor Kit for GM Trucks

Dorman 973-434 is an HVAC blower motor resistor kit that replaces an overheated or corroded original resistor on select Chevrolet and GMC vehicles. It includes the resistor and a harness pigtail to restore blower speed control in the HVAC system.

• Direct replacement HVAC blower motor resistor kit for select GM applications
• Includes a replacement wire harness pigtail for damaged connector repair
• Blade-style terminals with a female connector and male terminals
• 4-wire design with a 6-inch wiring harness length
• Mounts using 2 holes; mounting hardware is not included
• Package contents: blower motor resistor, wire harness, and butt connectors

Detailed Product Overview

This Dorman blower motor resistor kit is built for vehicles where the original resistor has failed from heat damage or connector corrosion. It is a practical repair for HVAC systems that have lost one or more fan speeds, especially on Chevrolet Colorado, GMC Canyon, and Chevrolet SSR applications. Part number 973-434 is also referenced for related service applications where the resistor and connector need to be serviced together.

Compatible With 2009-2012 Chevrolet Colorado, 2009-2012 GMC Canyon, 2004-2008 Chevrolet Colorado, 2004-2008 GMC Canyon, and 2003-2006 Chevrolet SSR. This part cross-references Standard Ignition RU1056 for the same application.

Common Problems This Part Can Address

• Blower motor only works on certain fan speeds
• No airflow from the HVAC vents due to resistor failure
• Heat-damaged resistor connector or pigtail
• Corroded electrical terminals at the blower resistor circuit
• Intermittent HVAC blower operation

Installation Notes and Tips

Inspect the blower motor connector and surrounding wiring before installation. If the original connector shows heat damage or corrosion, replace it with the included harness pigtail and use the supplied butt connectors for a secure repair. Verify terminal orientation and mounting-hole alignment before final assembly. Part number 973-434 is intended for select Chevrolet Colorado, GMC Canyon, and Chevrolet SSR vehicles listed in the fitment data.

Quality Assurance

Dorman designs replacement electrical components to address common failure points found in original equipment parts. This kit combines the resistor and connector repair pieces needed to service a damaged HVAC blower motor circuit on the listed GM applications.