Hey all. I was referred here from a motorcycle message board I'm a member of and said you all could help. I'm no mechanic but have mechanical abilities. I or my friends and I usually do all of our own work. We're cheap I've put motors in cars torn rear ends apart etc. I've got this problem that I cannot track down and it's pissing me off. Only when moving forward can you hear a squeak squeak squeak noise. It's almost like a rubber on metal sound and is bases almost on tire speed and more so under load. It gets very quiet when you are not on the foot feed. I've jacked the truck up and had all 4 corners on stands. #1 When I turn the rear drive shaft when the truck is in 2wd the front shaft spins. I've been told that isn't supposed to happen. #2. When doing number 1 if you spin the shaft as if the trick was moving forward there is a slight squeak noise. I dropped the front shaft off of the differential and the the squeak is coming from the front of the transfer case. What does this mean and does anyone have a clue as to what the fix is and can myself and my friends do it? My one friend was a Humvee mechanic in IRAQ so he has good knowledge as well. This one is just baffling us. Thanks T.C.