Hi, It's my first time on any forum and I'm sure it's been said before but my truck is a lemon!! I own a 2018 gmc sierra 1500 elevation edition with a 4.3l and six speed trans. I've had every vibration has most of you, from the vibration when it falls on 4cyl in every situation, worst when running at approx 50 to 70kmh. I have the vibration when running more than 60 kmh and worst as a get to 100 kmh, sometimes it gets so bad I have drop under 100kmh. I also have a bad vibration under my feet and gas pedal when I'm at 2000rpm, so there's always a vibration present. I brought it at the dealer at least 3-4 times but the service manager says every time that the problem wasn't present when the tech tried it out. Once I tried it out with the tech and he told me they knew there was a problem but gm tells them not tempt any repairs, then that same service manager tells me it's normal. I even told the sales manager that I'd like to trade it in even if I loose money, even the dealer doesn't want it cause she told me she'd take pictures and try a wholesaler. so I got screwed when I bought it and I'll get screwed when I change it. It feels good just saying it, thanks for that...
