Regain smooth blower fan-speed control with the Standard Ignition HVAC Blower Motor Resistor RU-799. This blower motor resistor regulates the current sent to the A/C and heater blower motor so the fan can run at each of its selectable speeds. It drops in for a broad range of GM vehicles plus the Saab 9-5, and the catalog lists it for both front and rear HVAC positions.
Confirmed applications include the 2010 Buick Allure, 2016-2019 Buick Cascada, 2013-2022 Buick Encore, 2010-2017 Buick LaCrosse, 2017-2025 Cadillac Escalade, 2017-2025 Cadillac Escalade ESV, 2017-2025 Chevrolet Suburban, 2017-2025 Chevrolet Tahoe, 2017-2025 GMC Yukon, 2017-2025 GMC Yukon XL and the 2009-2011 Saab 9-5 — see the Buyer's Guide tab for the full 28-application list.
- Premium copper connectors: use copper electrical connectors for more precise resistance values, supporting resistor performance and part life.
- HVAC-matched design: the research and design process aims for seamless integration with the vehicle's HVAC system.
- Variable-speed control: restores A/C and heater blower motor variable speed control, helping optimize HVAC performance and passenger comfort.
- Tested: undergoes extensive testing for correct performance in all conditions.
Interchange: BR699 · 13598090 · 13598091 · 84178783 · 13503201
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does the RU-799 blower motor resistor do?
It regulates the current sent to the A/C and heater blower motor so the fan can run at its different selectable speeds. When it fails you often lose some speeds while others still work.
Which vehicles does this resistor fit?
Many 2009-2025 GM models across Buick, Cadillac, Chevrolet and GMC, plus the 2009-2011 Saab 9-5. Check the Buyer's Guide tab to confirm your exact year, make and model.
What are the signs this part may need replacing?
The blower may work only on high, run only on certain speeds, or stop entirely. These symptoms can have other causes, so diagnose the blower circuit before replacing.
Does it fit the front or rear HVAC system?
The catalog lists this resistor for both front and rear HVAC positions. Confirm the correct application for your vehicle in the Buyer's Guide tab.
What connectors does the RU-799 use?
It uses premium copper electrical connectors for more precise resistance values, which helps support resistor performance and part life.
Write a Review