AC Blower Motor Resistor / Blower Control Module Replacement Numbers: 1580567, 1581773, 4P1516, 4P1595, BR532, 5369738, RU631, RU1321, BMR34, 2BMR34, 20340, MT1805, JA1639, 89018778, 89019351, 19260762, 52495874, 251946786, 52416100, 22754990, 15850268, 10325408, 10356906, 10397570, 15827470, 15827491, 52497491, 89018653, 89018849, 89018964, 93803635, 93803636 Key Features and Benefits: Restores proper operation of the vehicle's heating and air conditioning fan speeds. Ensures consistent blower motor performance for interior comfort in all weather conditions. Designed to meet or exceed OEM specifications for reliable fit and function. Direct replacement for specific factory part numbers for quick and hassle installation. Durable construction to withstand heat and electrical loads in demanding automotive environments. Vehicle Compatibility: Applicable Vehicles 1: Chevrolet 20032006 Avalanche 1500 / Avalanche 2500 20032006 SSR 20032006 Tahoe 20032006 Silverado 1500 / Silverado 3500 20032006 Silverado 1500 HD / Silverado 2500 HD 20032006 Suburban 1500 / Suburban 2500 20032006 Trailblazer / Trailblazer EXT 20032004 Silverado 2500 GMC 20032006 Envoy / Envoy XL 20032006 Sierra 1500 / Sierra 3500 20032006 Sierra 1500 HD / Sierra 2500 HD 20032006 Yukon / Yukon XL 1500 / Yukon XL 2500 20042005 Envoy XUV 20032004 Sierra 2500 Applicable Vehicles 2: Cadillac 20032006 Escalade / Escalade ESV / Escalade EXT Buick 20042007 Rainier Isuzu 20032006 Ascender Oldsmobile 20032004 Bravada Saab 20052006 97x Usage Scenarios: 1. Replacing a faulty blower resistor to restore full control over fan speed, ensuring the cabin stays comfortable during hot summers or cold winters. 2. Repairing erratic blower operation that prevents proper defrosting of the windshield in cold weather or condensation removal in humid conditions. 3. Maintaining reliable A/C and heating performance in mileage vehicles where wear and tear has affected existing electrical components. Installation Tips: Inspect the vehicle's AC system for any other damaged components before installation to avoid repeat failure. Check for clean, secure electrical connections to prevent poor contact, voltage drops, or short circuits that can damage the module. Compare the original part in your vehicle with the replacement part to ensure direct compatibility, paying attention to connector shape, mounting points, and electrical specifications. This AC blower motor resistor / blower control module is a precision replacement part designed for specific GM, Cadillac, Buick, Isuzu, Oldsmobile, and Saab models. By replacing a worn or malfunctioning resistor, you restore full fan speed control, improve HVAC performance, and ensure dependable comfort and visibility in all driving conditions. Built for longlasting performance, this component is engineered for a fit with factory wiring and mounting, simplifying installation and reducing downtime.