Blower Motor Fan Resistor Compatible with Silverado and Avalanche (Part numbers 22807122, 15305077, 973409, 15862656) What this part does Regulates the electrical current to the HVAC blower motor so fan speed settings work correctly. Restores multispeed operation when the blower is stuck on a single speed or only operates at speed. Controls heat dissipation to protect the blower motor and electrical circuit. Key benefits Reliable replacement: Directfit replacement for the listed part numbers to restore proper blower fan control. Easy installation: Designed to match original mounting points and connector type for straightforward installation and fast diagnostics. Durable construction: Built with a protective housing and corrosionresistant terminals to withstand underdash environments and repeated thermal cycles. Improved comfort and safety: Returns full range of fan speeds to maintain cabin comfort and windshield defogging performance. Compatibility and fit Compatible with Silverado and Avalanche vehicle models that use part numbers 22807122, 15305077, 973409, or 15862656. Intended as a direct replacement for the listed part numbers; verify vehicle application before . Performance and attributes Function: Multispeed blower motor resistor for HVAC fan speed control. Form factor: Compact design that fits original mounting locations and electrical connectors. Materials: Protective housing with durable electrical terminal contacts. Expected outcome: Restores consistent fan speed control and stable electrical performance when installed correctly. Practical use scenarios 1. Blower only works on speed: the resistor when the heater or air conditioner blower no longer responds to low or medium speed settings. 2. Intermittent fan operation: Use this resistor to resolve intermittent fan speeds that occur when changing climate control settings or at certain vehicle temperatures. 3. Routine HVAC or maintenance: Install as part of an HVAC system to restore full fan control after diagnosing a failed resistor or damaged connector. Installation notes Verify vehicle compatibility using the part numbers 22807122, 15305077, 973409, or 15862656 before ordering. Basic hand tools and a short removal of lower dash or glove box may be required depending on vehicle model. Inspect wiring and connector for damage before installing the resistor. This blower motor fan resistor provides a straightforward, compatible replacement to restore proper HVAC blower fan control for Silverado and Avalanche vehicles that use the specified part numbers.