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Re: Slow 02 response 2013 Silverado 5.3 4X4
Posted to Technical Discussion Forum on 1/23/2020

Hi Louis, I am with Steve Foster on this one. Barking at the sensors is most likely blaming the symptom and not the cause. Denso makes A grade parts IMO.

It is also important to look for leaking exhaust manifolds, which I assume has been done?

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