1badjk
Full Access Member
A couple months ago I took my truck to the dealership because I was having harsh shifts and harsh gear changes. They did the flash/reprogram that everyone on here was talking about and the truck drove flawlessly until yesterday. All of a sudden the shifting went right back to crap. Going from R to D feels like the drivetrain is gonna fall out of the truck. So my question is do I need to take it in every couple months to have the TCM re-flashed or will something like COBB tranny tune fix this problem?