Hi! Have a ram 1500 4,7 L -02
Yesterday the MIL light was shown and now when the tranny is hot it will only run in 3rd gear and no O/D,i can force it to go in 1st gear with the lever....
When it´s cold it runs perfectly for about 5 min (no O/D)

 

I'm sure that you already knew this.....but I think its time to take her to the shop/dealer!

 

Have it towed into the stealership. Sounds like its already fried. Sorry to her that bro.