I used a botttle of SMB 's fuel injector and carb cleaner. Within one hour my 2000 chevy blazer, with the 4.3 liter 6 cylinder, suffered catastrophic faliure of my injection system, $1500.00 damage. Needless to say SMB denies any liabilty and since I bought the product at the 99 cent store, I Filed a complaint with there corporate offices. Can any one help me anyone have similar problems with chevy fuel injection after adding their product or any other.