It has happened three times now over the past 2 weeks. Everytime I was unloaded, and the only thing that got it into overdrive was shifting down to 3rd then back to drive. I change my fluid a couple of times a year and my filter every 7,500 miles. Any ideas?

First of all; 7500 miles on the spin on is way too much. You can choose to believe me or not, doesn't matter. Try pulling the program and see if you still have a problem.
mike

Hmmm. . . I may need to decrease my filter change intervals. MikeL, What do you mean by "pulling the program"?

Put your truck back to stock...(plug your predator in and reload the factory software) :)

Ah, yes, the interesting thing about that idea is that I have used the Predator for about 1 year / 30K or so without any problems. I may have to wait for it to do it more often so I can see if there is a corrolation.

I guess you don't think the computers in our truck can have a brain fart just like the one you are using right now. Later! Frank