I dropped my truck off at the dealership yesterday because I was pretty sure it had a blown head gasket. I get a call today from the service guy (who I know pretty good) and he said that both head gaskets are blown and one of the heads may need replacing due to a burnt spot on it. I don't know what he meant by that or where the spot was at. If this is the case, what do you think caused both gaskets to go and a possibly ruined head? He also said that once it gets torn down, if its bad enough that a GM rep has to come look at it then I'll need to come take the PPE tune out of it before they show up. Hopefully I'm not going to get screwed into having to pay for this. Any suggestions?