I have a 2021 2.7 4x4 crew cab short bed with 3.55 gears and experience drivetrain shudder under light acceleration above 50mph. I love everything about the truck besides this major flaw.

There is a great thread on this forum with information of people’s experiences with dealers attempting to solve the issue, yet no solutions. Feeling that it is software related either in engine or transmission tuning, I am looking for experience from those that have gotten a tune on their 2021+.

Please share you experience with driveability, fuel economy, power, etc. What configuration you have and specifics on the tune you performed.

Thank you!