If your heater or A/C fan only runs on high, or skips settings altogether, a failed resistor may be to blame. The Standard Ignition Blower Motor Resistor RU-531 is built to take its place. It is a direct-fit replacement for many vehicles, among them the 1997-2002 Chevrolet T6500, 1997-2002 Chevrolet T7500 and 1994-2002 Honda Passport. See the Buyer's Guide tab for the full list and engine details.
This HVAC blower motor resistor limits the current reaching the blower motor at the lower fan settings. That is how the fan switch produces its different speeds. If the resistor is the cause of lost fan speeds, replacing it is designed to help bring back variable speed control for the A/C and heater.
- Copper electrical connectors: Premium copper connectors deliver more precise resistance values, supporting resistor performance and a longer part life.
- HVAC system integration: Standard Ignition's research and design process is aimed at seamless integration with the vehicle's HVAC system.
- Variable speed control: Intended to restore A/C and heater blower motor speed control, helping optimize HVAC performance and passenger comfort.
- Tested in-house: Undergoes extensive testing at the manufacturer's facility to check for correct performance.
Signs this part may need replacing: the blower works on only some settings (for example, only on high), the fan does not respond when you change speeds, or it stops running on the lower settings. Diagnose the cause before replacing, since a switch, wiring or motor fault can produce similar symptoms.
Interchange: RU1224 · JA1293 · BR434 · 89018849 · 93803635 · 8970458500 · 8970784520 · 8970784521 · 8972407410 · 7424060G01
This part cross-references / interchanges with the following part numbers:
RU1224, JA1293, BR434, 89018849, 93803635, 8970458500, 8970784520, 8970784521, 8972407410, RU-531, 7424060G01
