Help your heater and A/C blower cycle through its speed settings again with the Standard Blower Motor Resistor RU-49, designed to restore variable fan speed control when the original resistor has failed. It fits many vehicles, among them the 1990-2001 Chevrolet Lumina, 1995-1999 Chevrolet Monte Carlo and 1995-1997 Oldsmobile Cutlass, as a direct-fit replacement for the listed applications. See the Buyer's Guide tab for the full list.
The resistor adjusts the current sent to the blower motor so the fan can run at its different speed settings. Standard built this unit specifically for GM applications.
- Copper electrical connectors: premium copper connectors are used for more precise resistance values, intended to improve resistor performance and offer a longer part life.
- Variable speed control: designed to restore A/C and heater blower motor speed control, helping optimize HVAC performance and passenger comfort.
- Made for GM: Standard's research and design process is aimed at seamless integration with the vehicle's HVAC system.
- Tested: goes through extensive testing at Standard's facility to verify correct performance.
Signs this part may need replacing include a blower that works only on its highest setting, missing fan speeds, or no airflow at certain settings. Diagnose the cause first, since the switch, wiring or blower motor can produce similar symptoms.
Interchange: RU870 · DR788 · BR80 · 52473132
This part cross-references / interchanges with the following part numbers:
RU870, DR788, BR80, 52473132
