Sounds like you need a trip to the dealer to get your limited slip replaced. It should definately spin both tires on snow. If its not the clutches may be worn or something else is wrong with it.

Nothing beats a locker but for a daily driver it gets tiresome chirping around corners and in parking lots.

 

Some people think that 4 wheel drive means you don't need LS but you do. If one wheel looses traction, the whole axle will not have traction.

While not a truck, I have a John Deere tractor with 4WD that has demonstrated to me the value of LS. It has a limited slip rear axle that you manually engage. I have had occaison where I have gotten stuck in 4WD with one rear wheel having no traction and the front not able to pull me free. The other rear wheel just sits there - it will not turn when one loses traction. When I engage the limited slip, the other wheel grabs and every time, I have gotten out. Without the limited slip, I would still be stuck. I am not sure why limited slip is not always available on the tractor automatically but probably because its a simpler design.

The same principle applies to a truck except the LS engages immediately when you begin to lose traction at one wheel. The only possible drawback with LS is if you were to mash the throttle when in loose gravel or while turning. Because both wheels are turning in this limited traction condition, the vehicle will have a tendancy to squrim and possible fish tail a bit more than with non LS. Not a big deal but could surprise you if you're not ready for it the first time.

 

The Limited slip is far from idea locking diff....

It is good on the stock vehicle, but for 4X4 a locking diff is much better solution.

I dont prefer it on the Screw(street truck), it uses gas and affects the ride...

I can always use the trick of apply brakes and getting the second wheel to kick in and drive if I need 2 wheel drive...

I do own the LS on the F250 diesel..its ok..(street truck)...

If you are serious offroad, save your money and get an air locker...

 

OK , so a locking dif is more solid than the LS but as a standard LS option with 4x4 is unbeatable off the Showroom floor . Instead of 2 wheels driving (on a 4x4) there will be 3 wheels driving . I do alot of sand driving have no problem . People that see others with the LS not driving must be BS'd about the options or there is a true failure of the LS system (which I doubt) .

Get the LS dif.

 

I have been looking to replace my ls with a locker for more offroad traction. I have not been able to find a locker that works with my rear ABS sensor, so for now I am stuck with the ls. While a locker is better offroad, a ls is by far better than an open diff.