It’s basically a 12 volt powered box with many switches and other controls to manually manipulate the various solenoids inside the transmission while the vehicle is on the lift or even traveling on the road.Īn assortment of connectors allows it to be used on a wide variety of vehicle makes and models.
The Schaffer shifter, on the other hand, can be plugged directly into the main harness connector on a transmission substituting for the computer. Those are mainly for reading trouble codes.
It’s different from a diagnostic scanner which plugs into the OBDII port under the dash. It’s an extremely useful piece of diagnostic equipment to help technicians solve electronic problems while the transmission is in the vehicle. Have you ever heard of a Schaffer shifter? Probably not, but if you work on automatic transmissions professionally, you have. 4th Annual Hot Rod Showdown Coverage Car Shows & Events.
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