Mine does the same thing when i get around 60 and accelerating. The dealer said it's normal and "don't drive on paved roads in 4wd". Will this cause problems if drag racing and what do you think is causing the vibration?
I have the same very slight driveline vibration in 4wd, but only under acceleration at 50+. If you take your foot off the gas it dissappears. Truck has 42,000 miles and on 3rd winter and it hasn't changed. I understand it is normal for HD trucks like these.
A forum community dedicated to Chevrolet and GMC diesel truck owners and enthusiasts. Come join the discussion about duramax engines, performance, builds, modifications, classifieds, troubleshooting, maintenance, and more!