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Why doesn't G.M. put more G80 Rear Differentials in their 4X4s?

My wife and I bought a 1998 Gmc Jimmy SL 4X4 (AT & 4 door) GU6 3.42:1 ratio, we took it out years ago 4x4ing, and I was some what disappointed. It got stuck in icy ruts, needed people to push us out. On heavy acceleration only the right tire usually spins. So any way, […]

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