Unhappy with general motor

I've been having the same problem with my 2015 Silverado. The dealership wanted $1,200 for two fuel injectors. I asked why a drivetrain component wasnt covered under my 100k warranty and they claim that GM classifies a fuel injector as an electrical component so they wouldnt be covering it. I asked the man at the dealership if he by chance gets an electric bill for his gas usage at home... he didnt seem to think it was that funny for some reason. I've tried every possible fuel injector cleaner I can find in store and it hasnt seemed to make a difference so unfortunately I'll have to replace them at some point but needless to say GM is really screwing people over on this one