FixVault

Learn A Smooth 4-3 COASTDOWN And Part Throttle 4-3 KICKDOWN

NOTE: The transmission oil temperature must be above 43° C (110° F).

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

  1. At a vehicle speed between 64-97 km/h (40-60 MPH), perform repeated 4-3 kickdown shifts.
  2. Repeat step  1 until the UD volume becomes somewhat stable and the shift becomes smooth.