Standard Ignition HVAC Blower Motor Resistor P/N:RU-870
Regain control of every fan setting when a failed resistor is to blame: the Standard Ignition RU-59 Blower Motor Resistor is designed to return variable speed control to your A/C and heater blower motor, supporting HVAC performance and passenger comfort. It fits many vehicles, among them the 1993-1994 Chevrolet C1500, 1993-1994 Chevrolet K1500 and 1996 GMC C6000 Topkick. See the Buyer's Guide tab for the full list.
As an hvac blower motor resistor, this part controls the voltage reaching the blower motor so the fan can run at the different speeds you select. Signs it may need replacing include a fan that runs only on high or skips certain speed settings. Other faults can cause similar symptoms, so diagnose before replacing. Standard designed it specifically for GM applications.
Interchange: RU903 · DR790 · BR92 · 15991075
This part cross-references / interchanges with the following part numbers:
Will this work as a C1500 blower motor resistor on my 1993-1994 Chevy?
Yes. RU-59 is listed as a direct-fit replacement for the 1993-1994 Chevrolet C1500. Use the Buyer's Guide tab to confirm your exact vehicle.
Can I use it as a K1500 blower motor resistor on a 1993-1994 Chevrolet K1500?
Yes. It is listed for the 1993-1994 Chevrolet K1500 and the 1996 GMC C6000 Topkick. The Buyer's Guide tab shows the other listed vehicles.
What does a blower motor resistor do?
It controls the voltage reaching the blower motor, so the heater and A/C fan can run at the different speeds you select.
What are signs the blower motor resistor may need replacing?
Common signs include a fan that runs only on high, or one that skips certain speed settings. Other faults can cause similar symptoms, so diagnose the cause first.
How is the Standard RU-59 built?
Standard uses premium copper electrical connectors for more precise resistance values. Kanthal D resistor wire adds flexibility, durability and tensile strength to the wiring on higher-watt resistors.
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.