blue smoke on startup on my 2010 gmc sierra 2500hd - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 09-16-2012, 10:27 AM   #11
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30K on it? Take it to the dealer for warranty repair! What are you talking to us for?

Also, these motors DO NOT have a replaceable PCV, they are built in to the upper intake.

There is a TSB out for this very problem. If you take it to the dealer they will either:
replace upper intake
replace valves
replace heads
All of the above.
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Old 09-16-2012, 02:57 PM   #12
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Originally Posted by zigger21 View Post
Sounds like a diesel engine, if it is check the PCV and also make sure that the fuel regulator is not leaking because that can cause leaking deisel to ignite creating the puff of blue smoke. I hope this helps
I meant Gas motor I dont know why I had Deisel in my head. Sorry for leading you astray
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