What does the ck stand for when looking up parts Chevy trucks?

In the context of Chevy truck parts, "CK" refers to a body style designation used by Chevrolet for its full-size pickups. It doesn't stand for a specific acronym, but rather a code used internally and in parts catalogs to identify these trucks. Different numbers after the CK (like CK1500, CK2500, etc.) indicate the weight class and features of the truck.