Poncho_

WOW, that really sucks. Sorry to hear that result. Thank you for the info. I will check into that list. I am planning on a visit to the dealer as soon as I get my wife's vehicle fixed. I will update after it gets looked at. Thanks again.

Kojimep did you ever figure out what the issue was?? I am currently having the same issue. I have a 2017 Silverado 4x4 4.3. I took it to a dealer and they said it was normal. However, the ticking is only after warm up. I didnt realize that before taking it in. I have been in contact with Chevy Trucks via messenger and they actually helped me with some other issues that were corrected. I had read somewhere that it could be a purge valve but nothing definitive. Thanks in advance.