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I've got a '03 3500 4x4 duramax/allison with 74k miles, the first u-joint behind the transfer case went bad & cracked the trans. Has anyone ever heard of such a thing???? When I took it to the dealer the tech said when that joint freezes it sets up a vibration that breaks the trans. They gave me an estimate of $8,000.00 to replace it. Chevy does not want to assist in the repairs (even though I think it's a design flaw) they said it's my fault, caused from the bad u-joint. Believe me it didn't take many miles once it was noticable.
 

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that is defiently the first ive heard about that happen... :confused:
 

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its quite comon the most likely part that broke is the reverse housing witch is about 400.00 bucks plus labor ive replaced probraly 10-15 of them try a new shop
 

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Hi, I'm Earth. Have we met?
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Yeah usually just the rear/tail housing on the trans cracks, you should be able to jusy have that replaced. Suncoast makes a transfer case brace that is supposed to eliminate the chance of this happening!

Suncoast Transfer Case Brace
 

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Oh...... Squirrel!
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