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Home >> Dodge and Ram >> 2003 >> Durango Base, 5.9 Z, 4WD, Part Time >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission Diagnostic Procedures >> System Description And Functional Operation >> Function Operation >> Transmission Control >> Drive Learn Procedure >> Procedure To Learn A Smooth 2-3 And 3-4 Upshift:

Procedure To Learn A Smooth 2-3 And 3-4 Upshift:

Use the following steps to have the PCM learn the OD and 4C CVTs.

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