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Re: 2009 Chevrolet Duramax LMM trouble code P0101 - has delete
Posted to HD/Fleet Forum on 5/12/2018 1 Reply

I would assume so but IDK cause I have never done it. The ALER should read one to one with the vehicle idling and the EGR closed. If it is higher or lower then you would have a airleak somewhere. If you search ALER in SI there is a bulletin that will tell you ... Login to read more.

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