Procedure To Learn A Smooth 4-5 Upshift for 545RFE

Use the following steps to have the TCM learn the 2CA CVI.

1. Accelerate the vehicle through 55 MPH at a steady 10-15 degree throttle opening and perform multiple 4-5 upshifts.
2. Repeat step  1 until the 4-5 shift becomes smooth and the 2C(A) CVI becomes stable. There is a separate 2C volume used and learned for 4-5 shifts, 2C(A). It is independent of the 2C CVI learned on 3-2 kickdowns