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International Automotive Technicians Network
Re: GM P0172 / P0175
Posted to Technical Discussion Forum on 8/8/2013 6 Replies

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It isn't rich, the PCM is simply reducing the injector PW based on the O2 feedback. Look at your O2s.

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That is a typical reading for this s... Login to read more.

6 Replies Received (View Replies)