Here it is, just briefly looking around, 97 bucks seems to be the best price, yeah, I know its just the knob you are looking for. Kid's old 93 Bravada had a burnt out blower motor switch, dealer only had the entire climate control he wanted 300 bucks for. Guess their mechanics don't own a phillips screwdriver was only held in my two screws. Since money was an issue, was able with a heat gun straighten out that cheap plastic housing, not for show, cleaned the contacts and slapped it back in again, it worked until is vehicle was a pile of rust.
Was a bit surprised when the mode switch, a combination vacuum and electrical switch fall apart, non-repairable, even for me. Went to my Ford dealer and got a brand new one in stock for 12 bucks, and told my daughter in her then 98 ZX2 to be far more gentle with it.
Other options is to try a wrecking yard, but not in Wisconsin, want more than the MSRP for anything, and already badly used. Guess 97 bucks isn't too bad. Can do a net search, gmpartsdirect is kind of steep on S&H charges, just put in, "Gm part number 95146208: in google.