Yes there is extended warranty by GM. Best, and easiest place to get is the dealer you bought from. And hurry cause there is a time,mileage window your going to fall out of. With the issues our bonnies have and what you already paid,it'* only makes sense.
Several year and mileage options and three levels of protection on each.
Mine was Four Year-72,0000 miles Premium level @1600$ and it'* bumper to bumper
about the only things not covered in premium level are oil, filters, and brake pads.
I think the cheapest was 1200$ and aftermarket warranties are like the prescription discount cards, all but worthless