Quote Originally Posted by Polkchop View Post
So an update to the whole situation. I ended up taking my truck to the dealer to have another relearn performed on the transmission. After that I ran the truck on the 0 setting through out my 2800mi road trip with no issue. After I got home I had some jobs to complete that required me pulling my tractor and dump trailer (a little over 10,000lbs) and low and behold the hard shift is back again. I am at my wits end with this truck. I seriously regret ever deleting it as I had zero issues with the performance of the truck before hand, I only deleted as a precautionary measure of the def system. If anyone has any advice I would be extremely thankful as I am having a hard time figuring out what is the cause of this.
TSB 21-001-20.pdf