I realize there is an ocean of bad information on the internet, but I have read elsewhere that all GM vehicles made the switch to 1234yf no later than 2018....no idea if that is true.
However when I search for 2018 C7 Corvette AC compressors to purchase, all the "specifications" list r134a as the "type", including when I search 2019 model year.

Does anyone here know for sure....as-in you have a 2018 or 2019 and can see the sticker? Or work on these cars all day all week....

Thanks in advance