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Re: Engine revs up when starting
Quote:
Originally Posted by dayj1
'08 and '09 shouldn't have a PCV valve. Somewhere around 2003/2004 GM went to a fixed orifice that is cast into the truck valve cover. An '09 shouldn't have an EGR valve either. That went away on the truck motors in 2002. You also don't have an IAC valve since that is only for DBC setups and your Gen IV motor should be DBW. The vacuum leak theory is a good one and that's what I'd be looking for.
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Thanks for the information on the PCV system on my engine!
I have been wanting to ask the question on PCV"s
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