So around 5 and 15 I can hear this really fast squeak, after driving for a bit and paying attention it doesn't seem to be suspension, more driveline. Sounds like the front end. Under the truck I can't find anything obvious but I did notice my front diff input seal is barely wet, but nothing bad at all. Anyone got any ideas, the squeak is fast, to the point that I'm pretty sure it's the driveshaft.