I just bought a 2019 Colorado with V6. ... The factory Delco filter looks very undersized for a large truck and the filter media seems very thin. Will this tiny element last one year or 6000 miles without clogging? .
OFCIs in general have been getting longer from the OEMs. And yet filters have been getting smaller, slowly, overall from the OEMs. Contributing factors (engine design, lubricant formulations, product manufacturing abilities, and generally clean running nature of today's engines) simply mean taht engines today don't need giant filters and super-short OCIs. What is your presumption here? That GM purposely put out a product that won't successfully provide a desirable outcome? That is sold you a truck with a filter too small to do the job, and in doing so they risk increased warranty claims? It's your supposition that the filter will clog after 6k miles?
It'll be fine. Quit worrying.