Ok, So I've realized that sometimes fixing one thing leads to another. Maybe this is the case this time, maybe not. I just rebuilt the rear end in my 1996 XLT due to a loose pinion nut. After all initial tests and three days of running it with no issues (with the rear end) I happened to notice on Monday morning as well as this very morning, the overdrive "OFF" indicator flashing on the gear shifter column. On Monday, it was after I was under normal power for a decent amount of time, probably 15 or 20 minutes. I noticed it because the truck started to shift much harder and I thought it was a problem with my recently repaired rear end. Got to a gas station, shut the truck off, filled it up, and then continued on my way to work with no overdrive light flashing and no shift issues. Something had reset when I shut it off I am guessing. Drove it the rest of the way to work and then home with no issue. Yesterday, drove to work and back with no issue. This morning, after the first 20 minutes, about 10 minutes from work, it did it again. Drove it easy the rest of the way and shut it off in the parking lot here at work (it was still blinking). Fired it back up and again, something had reset as it acted normal and allowed me to activate and shut off overdrive with the button on the gear shifter. Any ideas or solutions from this vast knowledgeable group?
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