Alright y'all, I know this has probably been discussed at length, but after an hour perusing the forum, I can't seem to get a straight answer. As the tilte states, my gauge is not working properly. At highway speeds it will kick on randomly for a little while, but is always about 5-10 mph low. I use a GPS app now as it's been out for a while. I've replaced the wheel speed sensors as well as the transfer case sensor. I keep seeing mention of another sensor on the top of the transmission, but it seems like nobody knows where it's at. I have a 4wd manual SE. I've also pulled the cluster, cleaned and tightened all the screws and inspected the traces. It doesn't appear to be an issue with the cluster. I'm showing 0mph on my scanner when I drive using live data as well, so it looks like the ecu is not showing any speed. Any insight or help is greatly appreciated! I just don't want to keep throwing parts at it if it's a simple fix. I'm not the greatest when it comes to the vehicle wiring side, but if someone could point me in the right direction on a resource I can use, I'm sure I can figure it out eventually. Really appreciate y'all who took the time to read this and help out if you could!