[Xfire1000]

Well, I pick up my truck from the dealership on Friday and the technician gave me a very good explanation of the problem. My truck is operating as designed (According to Chrysler). The issue is at the point of a slight tip-out and then tip-in of the throttle, the VGT and EGR valve are operating and because I don't let off the throttle completely, the ECM is getting confused and does not know how to respond causing a possible vacuum in the intake. The vacuum is what is causing the shudder through all the driveline. There is NO fix for this at this time. The tech did not know if Chrysler is even working on anything and this is not a wide spread complaint. Chrysler is aware of this issue with using the Cruise (mine also dos in with the Cruise on) but he also did not know if anything is being worked on.

I unplugged the EGR valve and no more shudder. The truck is more responsive and have already gained one MPG is 40 miles on the overhead (mine seems to read pretty accurately).

 

[Rrloren]

I left Sunday for a 3 week vacation pulling a 11m lb. trailer and experienced the "washboard" shutter for the first time. I assumed it was trans related since this is the first time pulling with the Hypertech set on level 3 which is supposed to add about 185 ft. lbs. of torque. My egr is unplugged.
In Feb I pulled down to Fl. with tuner set on level 2 and never experienced any issues. Yesterday, when I stopped I changed back to level 2 and had no problem over 450 miles today. I'm assuming my issue is tranny slipping at higher tq. levels when pulling the weight. The problem only occurred at lower speed lockup while trying to accelerate. It felt like running across a rumble strip.