Keep what is profitable. Can what is not. Make more of what makes a profit. How much simpler can it get? Cut costs and increase quality (or at least the perception of quality
). Brand loyalty is shallow. Popularity is most often short lived. I think, along with the business structure, the marketing people have been failing.
I like the GMC trucks better than their Chevy counterparts. I have a Ford because it was the most truck I could get for the money at the time.