GM reps here told me to find a new dealer, my two in torn were good until GM forced then to remodel, waiting room was real nice, but not warranty, how about trading your 15 month old vehicle for a new one. Felt GM was more concerned about their dealers than me with dealer installed options, with fog lamps, tossing away just as many parts that you already paid for for different parts at retail prices. Can't even put on splash shields straight, and is their really such a thing as a certified floor mat installer.
Did drive to my old town 30 miles away to a Chevy dealer that was good, also told me GM wanted to remodel, said he doesn't sell enough cars to pay for it, so is dealing with used vehicles now, making a lot more money with a lot less headaches.
Found that GM hotline 800 number, you start from the bottom and have to work your way up, but still talking to people that don't know anything about cars. My rear disc calipers were bad at 15 months, piston was going back and forth by working the lever, my two dealers in town didn't even know you have to work the hand brake. But from direct word from GM, replaced them. What a terrible job, had leaks, hoses were not tight, screws were missing, but at least I had two brand new calipers, so corrected everything myself.
Then at 24 months my battery developed a high self discharge rate, neither in town would replace it, if sat for 24 hours would be stone dead. But did find a small Chevy dealer 13 miles north of town still working in a hundred year old building, they replaced that battery instantly. After BB was up, replaced the camshaft cover and did a good job.
So if you can find a dealer like this, you will be lucky.
We have public access to property taxes, looked them up, property taxes skyrocketed, but not only GM dealers, Ford, Chrysler, and Toyota as well. Some crazy marketing people think big fancy buildings sells vehicles, when what people want is good service.
Really can't blame the dealers, warranty work is both half the time and half the rates, no profit on parts so only making a quarter as much. If a cold rolled unplated steel bolt in aluminum breaks off, leave it. Some plastic parts also break off if removed, sure not making vehicles like they use to. With electronics, dead lost.