Some 2019 Edge/Nautilus vehicles equipped with an 8F57 transmission may exhibit a harsh upshift and downshift, harsh engagements when shifting from PARK to REVERSE, PARK to DRIVE and/or REVERSE to DRIVE with no DTCs present. These harsh engagements may result in an engagement clunk from the driveline. The vehicle may also exhibit a 4th to 5th gear upshift flare. This may be due to various powertrain control module (PCM) software parameters for harsh engagements when shifting from various shifter selector positions. To correct the condition, follow the Service Procedure to reprogram the PCM.
