steveos3312

Are you still having these issues? Did you find a solution or explanation? Still riding interstate in M5?

Thanks in advance for anyone who looks at this.. I have 2020 Crew Cab Custom 4.3L currently at 5k miles.. Coming from a 2015 Dbl Cab with severe "Chevy Shake" and bad transmission at 70k... Painful reminder of the shake but not the same issue. Paranoia could be a issue here but it did not have this issue off the lot. I get a "oscillating" vibration as the truck seemingly goes into V4 mode (cruising interstate speed / cruise control in general 40+ mph) . I feel this mainly in the floorboard but I (and passengers) can also hear the vibration.. It could almost be mistaken for tire noise however it goes away as soon as I remove throttle or give it enough throttle to downshift. It seems to be more exaggerated when going up a incline. Any ideas?