Procedure To Learn A Smooth 2-3 & 3-4 Upshift

Use the following steps to have the TCM learn the OD and 4C Clutch Volume Index (CVIs).

1. Accelerate the vehicle from a stop at a steady 15 degree throttle opening and perform multiple 1-2, 2-3 and 3-4 upshifts. The 2nd 2-3 shift following a restart or shift to Reverse will be shown during the shift as a value between the 1st 2-3 OD CVI and the normal OD CVI. Updates to the normal OD CVI will occur after the 2nd shift into 3rd gear, following a restart or shift to Reverse.
2. Repeat step  1 until the 2-3 and 3-4 shifts become smooth and the OD and 4C CVI become stable.