drcook wrote:
Also if buying a used diesel, be skeptical of:
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2004.5 and 2005 GM/Chevy Duramaxes. Engine RPO code LLY
They have overheat issues and head gasket issues. A blown head gasket's price tag at the dealership is 4000.00 to 5000.00. It is 600 to a grand and a week's worth of work to do it yourself. I cured my overheating issue with an extra radiator and larger trans cooler, plus a GM installed '06 airbox and other changes. We got the truck for $10,000 of sticker so I am OK with my fixes, but I am making sure I don't do anything to blow the HG's. Unfortunately, due to a design issue that was subsequently changed, it is probably inevitable.
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You didn't consider the Killer Bee fix with bigger turbo inlet?
I've not had the problem (knock wood) towing my small 10k 5th wheel.
Why did you go to a larger transmission cooler?