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Re: GM P0401 ' EGR SYSTEM FLOW INSUFFICIENT' QUESTION
Posted to Technical Discussion Forum on 3/2/2007 5 Replies

Guys check out these snapshots I took today on the van. Map voltage rise looks suspect but does anybody have a known good snapshot to do a comparison? Van has run 8 consecutive pass monitors and over 50 egr flow counters--no code p0401 yet. PCM has latest cali... Login to read more.

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