No, what i mean to say felix is that oem chevy/gmc caps for 22s don't fit 22" esky wheels, whether they are the standard seven spoke ones like the op is looking for or the platinum ones. The esky ones go over the lugs whereas all the other GM option wheels the caps go inside the lugs leaving them exposed.
These guys at Marinello must have manufactured/modified esky caps with the chevy logo, so the only thing i can think of that could work is getting chevy caps from Marinello and put them on an oem 22" platinum wheel ... but one would have to call to find out if A. their wheel cap assy is the same as the oem one, and B. whether they will sell just the chevy caps without the wheels. I doubt they would do it though as they would be helping people onto oem wheels instead of theirs.
Make sense?