The Nissan Path

I was driving my PF up on-to ramps to do some work on her and heard a snap....felt a LiL shutter and Now ...NOTHING.... forward , backwards ....but will hold in Park.

Is this a Major failure or something that can be done / Testing without droping it out for R & R

Any info would be Cool Thanks

Big D

if the snap was heard from the rear could be an axle.

Thanks but the 4x4 is in-op too
also it sounds and feels like the "old School Transfer case chains"

.... But after looking the the scyamtics....only see Gears and shafts

Timing belt? (assuming it uses a belt, instead of chain...)

Thanks but...I'm accoustomed to Timing Belt being an Engine item....
She starts fine....just no movement. and s slight whining noise then shifted into gear(s)

Trans imput area...

Is it auto? old auto's are kidna prone to over heating.
have you recently changed the trans fluid? if so and you or the people who did used gl5 your transmision is gone because the fluid disinigrated parts inside of it. You have to use gl4 in the trans and axles. hope thats not the case though bro.