The car market is switching quickly to EVs, GM has not shown that they can produce them, they recently discontinued their Chevy Bolt. They keep promising wonders in 3-5 years, but the years are ticking by. You don't want to be stuck trying to sell ICE cars in 10 years... Their only bright spot is Cruise, which has a shot at making a lot of money. Right now they're burning billions though, which means that at any sight of trouble, GM might cut their losses there, or try to sell it.