[wrench turner 85]

IDK what the lemon laws are in NY but as a mechanic the only that there trying to do is to get it to limp until any laws run out where they fix it for free and then tell you that this is wrong with it and hit you with a costly bill. Now if you back to the dealer and, see if there an ASE certified shop, if they are raise hell. say things like:" if you don't fix my car for good I'm going to call and get your ASE certification pulled" or " Fix my car or I'm calling GM head office and report your dealership and tell them what your doing" and use words like arbitration, BBB, and lawyer and they will fix about anything wrong with the car for free, hell you might get some free stuff out of it.
If you bought this car from a GM dealership it should not have all of these problems with this car but Shisss can happen. But if you have to don't be afraid to show you but and get nasty. if they say its fixed and it still does it a little bit take it back and have them do it again, and again until its fixed. Hope you have some luck with it.