I painted my rusty Super Duty with Summit single stage Charcoal grey. The Summit is probably a better match for a GM color, but it’s close enough to the Ford color for a plow truck.

Went on easily and covered well. I used the HF spray gun.

Summit will only ship the low voc paint products to Michigan. That’s what you’ll get in California too, so be wary of recommdations of product formulations not available in your location.