Np208 problems?

[Nazarethk5]

Hey guys I'm getting some strange noises from underneath the truck. No matter what speed while I'm driving if I let off the gas there is a rattling sound then when I have any gas at all it seems to make something taught and it doesn't rattle anymore. Also in 4L theres a constant whine from the T Case. Any advice would be great.

 

[readymix]

range fork could be coming loose. easy fix once you get the case apart

 

[sledheadak]

check your fluid level recently?

 

[sandawgk5]

I have a similar rattle on mine. My issue is that I do not have enough spline engagement on my driveshaft, that mixed with my Dshaft angles causes the splines to rattle when I am coasting.

The whine in 4L is most likely just the gearing in the Tcase whining. How fast are you driving in 4L. Mine whines pretty good when in 4L and have any kind or speed over about 25 mph.

Dik

 

[Chevy305]

whining in 4lo is normal