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

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In the last 3 months, I've had two Subies with P015A & B. Diag in the SI says to check for an exhaust leak, if none found replace A/F sensor, seemed too easy. Digging through the Theory trying to fig... Login to read more.

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