99 powerstroke tranny or transfercase?????
 

alright i shifted in to gear it jerked really hard and then my tranny wouldnt shift out of sencond gear so i was messing with my transfercase and i put it nuteral and i could still drive down the road, then all of the sudden i i couldnt move if i put my tranny in gear the engine idle does change and i can shift my transfercase from 2h-4h-n-4l with out any grindage at all with tranny in drive and my tranny does grind goin into park, would this be my tranny or transfer case???????????

what about your clutch or slave cylinder:humm:

auto trans

my tranny went out a month ago. you pretty much described the same problem i had. when it went out it made no noise though and every gear was like being in neutral. nothing was grinding, when i change gears it would change the idle. sounds like your tranny imo