Procedure To Learn A Smooth 4-3 Coastdown & Part Throttle 4-3 Kickdown

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NOTE: Transmission fluid temperature must be above 110°F (43°C).

Use the following steps to have the TCM learn the UD shift volume.

At a vehicle speed between 40-60 MPH, perform repeated 4-3 kickdown shifts.
Repeat step 1 until the UD volume becomes somewhat stable and the shift becomes smooth.