Tackle an overheated or corroded blower speed resistor with the Dorman hvac blower motor resistor kit, part number 973-402, which pairs a front blower motor speed resistor with a harness pigtail to replace the original equipment part. It fits many vehicles, among them the 1995-1999 Chevrolet C1500, 1995-1999 Chevrolet K1500 and 1995-2000 Chevrolet Tahoe. See the "Vehicles it fits" section for the full list and engine details.
The blower motor resistor regulates the voltage sent to the blower motor so the HVAC fan can run at its different speed settings. A new Dorman blower motor resistor with its own pigtail replaces both the resistor and the connector together.
- Direct replacement: designed to directly replace the original equipment resistor and harness on the listed vehicles.
- Resistor and pigtail together: every kit includes a resistor and a harness pigtail, which most repairs require.
- OE-like performance: made to perform like original equipment and intended to return the HVAC fan to normal operation.
- Engineering support: backed by Dorman's team of engineers and quality specialists in the USA.
Signs the blower motor resistor may need replacing include a fan that runs only on high, one or more speeds that no longer respond, or a melted or corroded connector. Diagnose the cause before replacing, since a failing blower motor or switch can produce similar symptoms.
Interchange: 15-8788
158788 · 3A1040 · RU866 · 20264 · 15024815 · 15039098 · RU61 · RU61T · DR776
This part cross-references / interchanges with the following part numbers:
15-8788, 3A1040, RU866, 20264, 15024815, 15039098, RU61, RU61T, DR776
Frequently Asked Questions
What comes in the Dorman blower motor resistor kit?
Each 973-402 kit comes with a blower motor speed resistor and a harness pigtail, so you can replace the connector along with the resistor.
Which vehicles does the Dorman 973-402 fit?
It fits many vehicles, including the 1995-1999 Chevrolet C1500, 1995-1999 Chevrolet K1500 and 1995-2000 Chevrolet Tahoe. Check the "Vehicles it fits" section for your exact vehicle.
What does a blower motor resistor do?
It regulates the voltage sent to the front blower motor so the HVAC fan can run at its different speed settings.
What are signs the blower motor resistor may need replacing?
Common signs include a fan that runs only on high, speed settings that no longer respond, or a melted or corroded connector. Diagnose first, as the blower motor or switch can cause similar symptoms.
Why is a harness pigtail included with the resistor?
Dorman includes the pigtail because it is essential for most repairs of an overheated or corroded original resistor, so you can replace the connector along with it.
