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Re: Duramax LML diagnosis
Posted to Technical Discussion Forum on 3/1/2023

Damon,

What is the max rail pressure achieved during cranking?

Secondly, in answer to your question about cranking vacuum on the CP3, you can reference service info for any 2006 - 2010 Duramax since the CP3 retrofitted to the LML's is a LBZ / LMM CP3. Login to read more.