hello, new to the site! great info so far.
ok..here goes.... i was pulling my friends 25' boat out before hurricane sandy came....i had the truck in low 4x4 as its a pretty heavy boat and it makes it easy to idle out....his boat was hung up on something so he really gassed it and it popped my truck out of gear...it almost rolled back into the water...i jumped through window and slammed on brakes....here is the problem...
I have a front end noise...cv joints? differential..dont think transfer case.,.,,,its clunky and noisy while in 2wd...if i put in 4wd it goes away...but i dont think 4 wheel drive working bc i was able to break rear wheels loose in dirt.....also the front drive shaft spins free while in park...cv boots jump around when i spin it... i hope its only the cv joints...

 

Does it spin freely while in park in 4wd? Is the front wheels off the ground? If the cv joints in the boot are jumping around then I would say cv joint is a problem.

 

have not gotten too far....pissed it happend helping someone else..hhahha...i hope its the cv joint
when its in 4wd i cant spin the front shaft by hand...out of 4wd in 2wd it does spin by hand...rubber boots clanking around ...i will get truck up later today after the sandy clean up