I/M Readiness on 07 z71

By bcrooms
February 28, 2018 in 1999-2013 Silverado 1500 & Sierra 1500

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bcrooms

Posted February 28, 2018

I'm trying to get the I/M readiness completed on my 07 z71. Everything checks out fine except for the O2S portion.

I'm not very familiar with doing this test, but I have researched the drive cycle requirements.

I feel that I have driven it enough by now for the O2S to complete, but it isn't. Could there be an issue with the sensors?

I do have two DTCs on the truck at the moment but I don't believe they are related to the O2S.

P0121 & P0455 are the current codes.

Thanks for any input and tips

Brandon

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