GM Genuine Transfer Case Two/Four Wheel Drive Actuator Position Sensor | 84377721 | GM

GM Genuine Parts Transfer Case Range Position Sensor. Working with a motor to switch your vehicle between two-wheel drive and four wheel drive (4WD), this sensor sends a signal to the transfer case control module indicating the position of the transfer case between range changes. 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). GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle GM regularly updates production and service part designs to integrate new materials and technologies