I spent $65k on a new 2016 Silverado HD3500 LTZ, diesel truck, with the extended warranty. Within 5,000 miles, the blinker in my driver side mirror stopped working (intermittently), for short periods of time (mostly when it was cold out). When I brought it in for service, they refused to look at it, because it was working at the time. Whenever I brought it in for other service, it was working and they wouldn’t look at it. I couldn’t schedule the service because I couldn’t know when it would work or not. A couple of months after the 3 year warranty was up (~28K miles) it stopped working altogether. Since the warranty is over, even though they have a record of it at 5K miles), they won’t pay for it. The connection in the back of the mirror is corroded and the whole mirror has to be replaced (over $800), for a 25 cent connector. The same thing happened with my “chrome” sidesteps. They started peeling a month after the warranty was over and they want over $800 to replace, even though they are definitely defective. I’ve also had issues with their poor service - not doing what I paid for (oil/filter/fluids) leaving my tires severely under inflated (65 psi vs 80 psi) greasy fingerprints on my white door, etc. Needless to say I’m through with them and won’t be going back. We just bought a new Malibu, but not from them. My advice - STAY AWAY!!