The windshield wiper blades leave streaks on the windshield, they can only be replaced through Chevy, and the ends break off easily during extremely cold (below zero) winter nights. They need to make wiper blades that you can easily purchase anywhere, like most other wiper blades. But even if they did, you'd have to buy two different sets of blades, because one is twice as long as the other. But noooo... Just another way for GM to make a buck.