Hoping maybe someone has some insight. My outlook has been a night mare the engine was just replaced in april. It jumped time and bent a valve. They replaced the whole thing cause i flipped. Now im having this issue where it feels like a tranny problem to me. I was on my way to work the check engine light came on nothing new to me but it started shuttering on the high way. Get it in my garage have one of my techs hook up his scanner he finds u0073 p0562 p0667 p06ac p0711. So I call the dealer tell them im bringing this pos back for more issues. This was the week before labor day it was a wednesday i get there i tell him whats going on. He starts giving me the song and dance its a holiday week hes short staffed not much he will be able to do. I go sit in the waiting room he than comes back says the trans is shuttering he says possible torque converter or valve body he resets the light and says ill have to bring it back. I bring it back the next week now he tells me they are going out of business but he will try and diagnose the problem but if the trans needs to be removed or overhauled i will have to take it to another dealer. I left it there for 3 days. He called me stating they have found nothing wrong so far just that its shuttering in evry gear and that the trans needs to be torn down to be inspected but since they were closing there doors id have to take it to another dealer. The service manager notated on my receipt what they did for the other dealer so they knew where to start from:This is what they did.They road tested vehicle on light acc can feel checked fluid no metal no codes in system. Vibrates all gears call tac. Check ratios shift point match spec in doc 1747826 check slip speed less then rpm call tac back j calibrations all correct. Perform shift adapts tac suggests r-r trans and disassemble check 3-5 wave plate and valve body. If ok replace tcm case #71-1104585338. Due to shop closing not able to remove and disassemble. Advised owner to take to another dealer. So after all that i take to a dealer by my house gm customer called them and made sure it was ok i dropped it off friday with the paperwork and case number from gm. My shop is right next door so i would check the parking lot from time to time to see if it was in the garage yet monday rolls and its not in the garage yet so i give a call over she says her trans guy is in school. I back off dont wanna be a pain in the A** finally wednesday she calls me saying they cant find anything and for me to come pick it up i was sooo pissed i get there and the service advisor is filling out my multi point inspection sheet just pencil whipping evrything checking off shocks good struts good when i saw her do thati said liar she looked up startled i said did you read that one befor you checked it off or did your techs just not look at my trcuk cause if they did they wpuld have saw my struts were leaking. I take my truck soon as i get on the highway stats shaking again intermittently. I call and rip gm customer care a new one they say take it back when its doing it so i do and the tech is telling me its road vibration or something else. I tried to trade it in and im upside down in this **** thing so the dealer wants nothing to do with me unless i have a nice down payment so im stuck and help would be apreciated