GM Genuine Parts Engine Cooling Fan Modules are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These engine cooling fan modules are microprocessor computers used to control the operation of the cooling fan. The module receives input from sensors and switches and increases or decreases the cooling fan speed as required. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

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• Controls fan speed
• Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
• GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
• Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type
• GM regularly updates production and service part designs to integrate new materials and technologies