The dealership called Friday (August 17th) and stated they had the problems resolved. I picked the truck up around noon and initially it performed great. After about 40 miles of driving I made a stop and upon starting the truck the shudder came back while idling as well as the rpm fluctuations. At highway speeds the shudder comes and goes and a couple of times it acted like it was hunting for the right gear which was one of the problems it had before the repair attempt. I contacted the dealership and they stated they would look further into the issue. If the TCM is really “learning” my driving habits then I will have to agree with an earlier post that the computer has a learning disability.
After a couple more days of driving the truck it is starting to look like all of the original issues may be returning.
I will say the dealership has been very cooperative and wants to resolve the problem. They even picked up the extra cost of the rental beyond what GM covers.
I have also contacted GM priority care. Below is their response and I will keep posting updates.
“We understand how you like to have this issue resolved and we would like to work closely with you along with the GMC dealership in resolving this issue. Due to the nature of your concern we will endorse your case to a Senior Advisor who will continue to work directly with you and your dealership to review your vehicle and concerns. Please know that all the information you have provided will be available to both your dealer and Senior Advisor as well. We will forward your case to them and the Advisor and Dealer will review your case and vehicle details, and one of them will be in contact you within 2 business days to assist you further.”
