Well my overheating stopped after a new thermostat but the clicking still remains under load. It makes hardly any noise when just cruising around but when u step on the gas to accelerate hard it makes a clicking sound underneath the truck somewhere. i havent been able to pin point the sound or see anything physically underneath it to cause this noise. driveshaft is tight and nothing is obstructing it. I dont know if the detroit locker is known to make that sound driving straight while under acceleration but i havent been able to reach a tech from eaton yet either. If anyone has any similar issues or ideas please respond. Thanks a bunch.

 

Well i figured out where the sound is coming from and its my transfercase specifically in 2wd. no sound in 4 wheel drive at all. I probably did not clearance the shift fork enough when installing the new gear set. Well now at least i know where its coming from thanks.