I have a new 2020 Silverado High Country Diesel 2500 and am experiencing a vibration, from day 1. This appears to happen most notably at 65mph. I have had original tires balanced 4 separate times at the dealer and at a private shop. And the dealer just replaced the tires. The problem appears to be reduced but still exists. I did test drive another new 2020 at the dealer and it did the same thing. Has anyone else experienced this on the new 2020 model (I see it frequently posted on older models) and do you have any suggestions for a fix. My truck now has under 1000 miles.
