2015 Silverado illustration of the evaporator core shows the expansion valve, but says NS use evaporator core. Group 9213 shows expansion valve. Called partec and was told the expansion valve is a good number for the truck. Hopefully he will get the catalog fixed. Most of the younger parts people don't use the group just the illustrations.
I too apologize for the sarcasm. I see item #29 in the illustration as NS , but going to the bottom of the page I see Kit1 PN 22989959. Don't know if they just changed that today, but that's what I see.