2017 Sierra 6.2 with leaking cylinder head

[pewterliftedz]

Took my Sierra into the dealership last week due to a puddle of coolant sitting under the truck.  Got underneath and realized that it was coming from the driver side head, and it was audibly leaking after the short drive to the dealer.  The dealer determined that it was leaking from one of the cylinder head bolts.

 

Resolution:

The dealer installed a new driver side cylinder head, and the necessary gaskets/seals/bolts.

 

Sucks that my new truck had to have the engine dug into at only 13k miles, but at least warranty took care of me and got it knocked out.  Who knows what caused this issue.  The only mods on the truck are a Volant intake and Dynomax cat back.

[Justin101714]

Chock it up to GM makes thousands of them a day. Bound to be one with bad casting


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[Paintor]

Porous cast aluminum. There was a service bulletin on it....years ago. Guess still poor castings.

 

 

[pewterliftedz]

Ya, shit happens. Hope I don't have any further issues.