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

The "A" DTC is rich-to-lean response and the "B" is lean to rich. What were the fixes in your cases?

I think in Louie's case it might be good to check the Mode $06 test-results data to see by what margins the sensors are failing. Login to read more.

3 Replies Received (View Replies)