That's pretty much it. They don't sell anything that I would buy (except for an ordinary old pickup truck). And that's saying a lot, for the world's largest automaker. I would drive an old GM car, I just wouldn't bother buying a new one. They're too boring. I'm not interested in a Sport Utility vehicle, as I find them incapable of either sport or utility. I'd rather have a cheaper, more useful truck.
GM's big mistake, in my opinion, was the failure of their rear-drive cars. All their cars were basically rental units, or you might think of them as cars made for women (I'm not one). What caused that, of course, was CAFE, but they gave up too easily. When the revival of exciting cars began, they didn't bother to make products for it. Cadillac is the exception - they were allowed to build a modern rear-drive car. None of the other divisions are allowed to compete with what I would buy. GM has tons of moder rear-drive models overseas, but Americans don't really want that.