My stepfather's truck has a Dana 60 limited slip rear axle with 3.73 gears. Today, when stuck in the snow(common in central New York), I noticed that only one tire was spinning, meaning that the limited slip diff isn't functioning as it should. Does this mean that the clutch packs in the diff are shot or would the truck not move at all if this were the case? I've never seen what happens when a limited slip wears out... does it act like an open diff?

Thanks for any input.

My '86 4Runner went to the bone-yard November 29, 2004 at 10am after roughly 430,000 miles on the original engine and transmission. :-( Looking for something else to wheel in...