Duramax bites the dust - Blown head gasket @ 102K miles

Hey OP, I would NOT have the dealer do it, they charge WAY too much. I would have South East Powersports off of Lucket Road do it. I'd also do APR Studs and Grade C gaskets while your there. Then I'd do a LBZ Turbo Mouth Piece to avoid the over heating issues the 05s have. Once that's done you should be good. The 04.5 and 05 LLY's have a occasional HG issue.

PM me if you need any other real help. I'm local to ya as well.