At my breaking point with this truck. I've dumped so much time and money into this repair and can't seem to figure it out. The transmission is essentially in limp mode and only has 5th gear as far as forward gears go. It does have P,R,N but D321 is all just 4th or 5th gear. I recently swapped transmissions with a known good one and that's when it's started. It keeps throwing codes for transmission solenoid A&B circuits. There's like 6 code all related to that. I've tested and inspected what wires I knew how to test, I've bought new solenoids and installed them. I've flashed the truck back to a stock tune, tried reloading a custom tune, changed fluids etc etc etc. Still no change at all. I have a feeling it's something in the wiring but I don't know enough about them to figure it out. Plus it's hard enough to get up and down more less crawl under a truck to work. I've spent all the money I'm going to spend on the truck but if someone can come and fix it no matter if it's a simple wire break in the trans harness I'll give them 2 AR rifles. 1 is a 556 the other a 12g. Several mags for the 1st on. Only 1 for the other. Couple different sights, flashlights, rails, grips, guards etc. Both have over 100 rounds of ammo. But let me be clear you only get them if truck gets fixed. Not for trying and no I will not sell the truck. I'll part it out or crush it with my mini x depending on how I fell that day.

Truck is a 2010 F250 SD that has the 6.4 diesel and 5r110w automatic transmission.