Mine is perfectly balanced. In February I drove from Massachusetts to California and back in March, and what a beautiful ride, I am a mechanic and very fussy about ride and shakes! Mine has the 22” wheels! I drove 1,000 miles a day, so 3 days out and 3 back! Lot of the speed limits are 80, so...
Sounds like you are hot on the trail to find the problem! Good thing you can tow it with another truck! So you feel something without the trailer! Sounds like your close to finding it! Good luck!
I am hoping to get a lot of miles on this new 3.0 baby Duramax, but 957K on a 6.6 Duramax is unheard of! It’s first owner towed new campers to dealers all over the US, and traded it with 845K, so my son is the second owner. The carfax shows the first drivers yearly driving average to be 123K...
I have 500 miles on my 2020 Denali 3.0 Duramax 10 speed transmission, and love it! What a beautiful ride and truck! Traded a 19 Silverado RST with the 5.3, 8 speed ( junk transmission)! It had 11,900 miles whan traded and I hated the ride and side stepping over bumps! I also have a car fax...