There is no speedometer relay. The speedometer input is provided from the vehicle speed sensor that is located in the tailshaft portion of the transmission.
This input is also used by the power train control module (or PCM) and is used as an input for transmission shifting.
There is a small box located on or close to main computer called a drac module.that controlls speed o as well as shift points
412 views
Usually answered in minutes!
look on the side of your power control module.located above parking brak pedal.notice small computer box,precto speed o control.
×