Can somebody tell me 100% for sure what the part number for the catalytic converter on a 2020 Silverado 5.3 4x4 LT extended cab is? I can find lots of different part numbers with a wide variance in pricing. I have found 84557805 84520354 19420299 and 84655074 I have found literally $2000 difference in the prices of these different numbers all of which are supposed to fit. Yea somebody crawled under and sawed off my drivers side one.

 

call the GM parts dept with your VIN and they'll give it to you. Or use an online gm parts reseller