Get your fan speeds back under control with the Standard Ignition HVAC Blower Motor Resistor RU-54. This resistor sets the voltage the HVAC blower motor receives, giving you the different fan speeds on the A/C and heater. It drops in as a direct-fit replacement for the 1991-1996 Buick Century, 1991-1996 Buick Commercial Chassis, 1991-1996 Buick Roadmaster, 1991-1996 Chevrolet Caprice, 1991-1994 Chevrolet Commercial Chassis, 1994-1996 Chevrolet Impala, and 1991-1992 Oldsmobile Custom Cruiser.
Common signs the original resistor may need replacing include losing one or more blower speeds while the highest speed still works, or the fan not running at all. See the Buyer's Guide tab for full engine-level fitment.
Interchange: RU868 · JA1614 · BR78 · 52455732
This part cross-references / interchanges with the following part numbers:
What does the RU-54 blower motor resistor do?
It sets the voltage sent to the HVAC blower motor, providing the different fan speeds for the A/C and heater system.
What are signs this resistor may have failed?
Losing one or more blower speeds while high still works, erratic fan operation, or the blower not running at all can indicate a failed resistor.
Which vehicles does the RU-54 fit?
It fits GM applications including the 1991-1996 Buick Century, Roadmaster and Chevrolet Caprice, 1994-1996 Chevrolet Impala, and more. Check the Buyer's Guide tab.
What numbers does this part interchange with?
It cross-references RU868, JA1614, BR78, and 52455732.
Why does it use copper electrical connectors?
Premium copper connectors help maintain precise resistance values for consistent performance and longer part life.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
