Fightnfire
Moderator
In my area it's not even close. It has to be Ford -> GMC -> RAM -> Chevrolet. Ford being 3 to 1 to GMC. The newer GMC HD's seem to be gaining ground, I don't remember ever seeing that many around, but they killed it in the looks department and the engine is smooth as silk.
Similar in my neck of the woods most of the GMC I see are newer while the Rams all are older. I don't think that's a reliability thing, I think it's just more of a people who have bought new rigs recently are choosing GM. The Fords are a good mix of old and new.