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Narwhal

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  • Location
    TX
  • Gender
    Male
  • Drives
    2017 Tahoe LS 4WD Black

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  1. I just wanted to see if the vibration I'm experiencing in my '17 Tahoe LS 4WD with the 18" wheels is the same as what other people have experienced. The truck is fine below 60 mph. At about 60 and up to 65, there is a "moderate vibration". It dies down in the 70 mph range. It starts again at 75 mph and gets SEVERE at 80 mph. It feels like driving over a small speedbump every 20 feet at 80mph. The vibration is so bad the digital computer display on the instrument panel gets blurry. If you go "ahhhhhhh" it sounds like someone is pounding on your back or using one of those electric massagers on you, except it doesn't feel good. This is on a perfectly smooth and recently paved concrete interstate by the way. The truck didn't do this until today when it hit about 600 miles total. The only thing I can think of that might've triggered it is that I had to put it in 4WD to get out of a muddy road, but I have since thoroughly cleaned the wheels and underbody and the vibration is still there. The vibration is difficult to localize, it affects the entire vehicle and I can't tell where it is coming from.
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