This part number popped up in a search as well GM exhaust sensor p/n 12643246
Says it's an 02 sensor for 2015 chevy.
The other that I posted is for a duramax and is exactly the same that was in my 13 cat
I ran the bypass in mine and all of
my buddies sleds for years. Fraction of the price and work great. Some of the Delhi sensors are too long and won’t allow the hood back on as well. Heard of a few folks that had that problem.
also ran into a guy last year ago out a delco one on from Amazon and it shut the bed on him half way through the day. I sold him a bypass up on the alpine and we installed it and he still runs it today.
like i said on your snowest post, delete the thing and never have the issue again. cost you a few cents for resistors and a few more cents for a pipe plug. ran this on my 12 for years with no issues