Man just got my TransGo kit installed and took the truck for a spin and got a orange engine light , went by Auotzone ran code and came up with P0747 , something about a high pressure solenoid valve stuck open .
I was very careful and made sure everything was clean and checked every move I made 3 times or more .
Truck shifts through all the gears except overdrive , has anyone else seen or heard of this happening ?