Those 6.5's are a crap shoot. Every so often they built a good one but for the most part the majority are/were lousy. They couldn't compete with Ford or Dodge and had to come up with the Duramax.
Could be wrong but I thought its a 3speed and why you'd see them crawling down the highway.
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Last edited by echo; 11-21-2013 at 07:40 PM.