wheel size

[rusty nuts]

We have 2 3500 Chevy Express one has 19" wheel the other 16", they are 2015 and 2016. I can't find any 19" wheel for it listed they are all 16"

Only thing I can think of the 19" is from a different make.

[CamGTP]

Somebody before you, if you bought them used put on different rims.

 

Post a picture of them if you want.

[MORSNO]

19" must be a mistake, there is no such wheel.  There is a 19.5" heavy duty wheel with G&H load range tires being common.