2016 5.3 Tahoe collapsed lifter & AFM delete question

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Evanharich

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hey folks, I’m new here. I’m helping my pop repair the engine on the family Tahoe, started it and left the gas station and sure enough miss on number six. Opened it up verified that the rocker arm was off in the tip of the valve. We pulled the head off and it seems the camshaft is OK on the collapsed lifter lobe, number six , there is a faint score on the lobe, but not deep enough to even catch in O-ring pick on almost just surface discoloration, and the roller looks fine on the lifter and is smooth. We have the top end off on the engine now and are looking at what we should do. We live in Southern California and need it to pass smog. I would love to delete the afm but from what I understand I will not be able to do this and pass smog. So what we are thinking about doing is buying new GM lifters and replacement parts and putting it back together as factory knowing that we will have to do this in another 140 thousand miles.
That being said, we are looking all of the sensors, doodads and items that are nearly inaccessible when this engine is assembled. Does anyone have a list on what sensors, solenoids wires and any other failure prone items we should replace while we have the engine a part on the top end?
Thank you guys so much. If you have any advice, please holler.
 

Marky Dissod

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We live in Southern California and need it to pass smog. I would love to delete the afm, but from what I understand I will not be able to do this and pass smog.
This is incorrect. Cylinder Deactivation is not required to pass smog.
The tough part is finding a tuner who will tune the ecm to disable the cylinder deactivation
so that the deletion does not throw a code. It's the code that causes the failure.

If the ecm is tuned to disable the deleted Cylinder Deactivation, it should pass without issue.
 

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