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Re: Slow 02 response 2013 Silverado 5.3 4X4
Posted to Technical Discussion Forum on 1/22/2020 3 Replies

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I would add to be aware when looking at the freeze frame for these DTCs STFT will be around 30% iirc, this is NOT due to a lean condition correction, this is due to the PCM forcing the system rich to... Login to read more.

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