I have a 2005 silverado 4X4 and when i turn sharp enough it almost seems like I'm in 4WD when im not. I have been told it's my differential (which is limited slip or "posi") I changed the fluid and still same thing so I was wondering what I needed to get to fix the problem. A whole new posi rear end or just the clutch packs and springs or something else?

 

On dry pavement, does one of the rear tires squawk? If not, the problem isn't in the differential.

If the truck is 'bucking' in the front, jack 'er up with all fours off the ground and see if it is driving both differentials.

Allan

 

the inside rear tire (so if i turn left it would be the left rear tire) leaves black marks and hops in a way. you can feel the truck jerking on dry pavement.

 

Okay,

Have you tried a bottle of friction additive? If that doesn't work, I'd be for yanking that cover and see what's wrong in there.

Allan