For General Motors. C/K, S/T, 4L60, L, M The 1990 2-Wheel Drive C, R, and S trucks and G and M Vans with the 4L60 transmission will be equipped with a new plastic speed sensor. Removing the sensor with pliers or by prying may result in damage to the sensor. J-38417 has a T" handle designed for removal and installation of the sensor by hand.