Standard Ignition HVAC Blower Motor Resistor P/N:RU-496

Designed to restore variable fan-speed control to the heater and A/C, the Standard Ignition RU-496 front blower motor resistor is a direct-fit replacement for the 1996-2005 Chevrolet Astro and 1996-2005 GMC Safari. Standard Ignition built this resistor specifically for GM applications, with a research and design process aimed at working smoothly with the vehicle's existing HVAC system.

• Premium copper connectors: Copper electrical connectors help hold more precise resistance values. Standard Ignition says this improves resistor performance and gives a longer part life.
• HVAC system integration: Engineered through Standard Ignition's research and design process to integrate with the vehicle's heating and air-conditioning system.
• Variable speed control: Helps return A/C and heater blower motor variable speed control, supporting HVAC performance and passenger comfort.
• Extensively tested: Put through extensive testing at Standard Ignition's facility to verify correct performance across operating conditions.

The hvac blower motor resistor steps down the voltage sent to the blower motor so the fan can run at its lower speed settings. Signs it may need replacing include a fan that runs only on high, or one or more speed settings that no longer work. If a failed Astro blower motor resistor is the cause, the RU-496 replaces it. Other faults, such as a worn switch or damaged wiring, can cause similar symptoms, so diagnose the circuit before replacing parts. See the Buyer's Guide tab for engine details.

Interchange: 2-BMR36
2BMR36 · RU1189 · DR779 · BR399 · 12135105 · 89018436 · BR399SB