Transmission: 45RFE 545RFE shift learn procedure. Transmission: 45RFE 545RFE shift learn procedure 1. Accelerate the vehicle from a stop at a steady 15 degree throttle opening and perform multiple 1-2, 2-3, and 3-4... 2. Repeat.
This condition may occur even after a Quick Learn procedure has been completed. DIAGNOSIS: The 45RFE transmission adapts to its mechanical tolerances by learning the clutch volume.
