Here is a little bit of a story...
I installed two carr hoop steps to make life easier for my fiancée in the coming years and had to drill some holes in order to do so. While drilling one of the holes I nicked a wire by the driver's door... Didn't think it'd be too important and would fix it later if it was a problem... Also had the truck scheduled at the garage to get two wheels changed because the bolt holes were cracking.. Figured while they were at it, might as well get them rotated front to back. Went to drive the truck in and it went into limp mode! Never had any issues before but now the OD light was flashing, speedo wasn't reading, very hard shifting, and to top it off my radio and dome light wasn't working... Based on that information I bet many of you already know the problem. It was dark though, and I didn't have time to check anything and left a note describing the symptoms and suggested maybe fuse or wire I poked with my bit...
Yesterday they said they weren't sure what was wrong with it. Today they said they soldered the wire and that fixed it. Got dropped off and got in the truck to leave... still in limp mode and still no radio.
took it home and checked the owners manual. Pulled the fuse for the radio, dome light, and speedo memory. Burnt. Swapped with the cig lighter fuse. And everything works fine!
That thing was starting to stress me out... I'm getting married this weekend and the IDI is the getaway vehicle which I also need it to transport some import decorations. The venue is out of town and I have to leave tomorrow. When I got it back like that I was starting to get worried. Now, on one hand, I'm very thankful in the end it was something simple I could EASILY figure out. On the other, I'm quite disappointed that this mechanic was unable to find such a simple problem.
Lesson learned; don't forget to check the simple things!