The with poor handling in snow seems to be pretty common. I have a 2019 RS and find that even in four wheel it get tossed around pretty well in slush and even in heavier rain. Not sure if it is the size of the tires, tread of the tires, or possibly some other issue. I have seen others who have swapped tires and seem to be much better, but all the posts that I have seen are from someone who swapped out a size other than the 21’s on my Blazer. At the end of this summer I may change the tires for something with more bite.