Ok, My truck must be a true Southerner....(I think it was sold in Raleigh NC originally). No issues until the other morning, our FIRST cold morning (about 39-40 degrees) I had nor have any real wobbles I've read about when I searched. My speedo was making a grinding sound, it works, but you can actually feel it vibrate through the dial. Does not seem to be a cable or TC gear issue. When I drove it at lunch (much warmer) it was gone. Repeat for everyday this week. Only does it when it is cold. I would think it needs lube, but it was mentioned cleaning needed as well with brake fluid. Thoughts? Kind of grease/lube?