Vibration (like buffeting) 68-73MPH new tires, 3 different shops checked

[smokey_2020]

If it's a wheel bearing, it will eventually show itself.
You certainly don't want a new Tahoe with the 6.2 gas engine.
Your only other alternative is a Ford Expedition. The 3.5 Ecoboost makes plenty of power and will tow 9,000 pounds.

Yes, no desire for 5.3 or 6.2, owned both in the past 10 years and no comparison to Duramax 3.0
I am researching Expeditions, I never owned Ford, general sentiment summarization for Ecoboost is negative, but honestly sentiment for GM is now the same - negative.

 

[MParr]

Yes, no desire for 5.3 or 6.2, owned both in the past 10 years and no comparison to Duramax 3.0
I am researching Expeditions, I never owned Ford, general sentiment summarization for Ecoboost is negative, but honestly sentiment for GM is now the same - negative.

Aside from general sentiment, Ford paints their frames. GM dips theirs on some sort of wax and it doesn't hold up as well as paint.
Also, Ford is now into the 3rd Generation of the 3.5 Ecoboost and has addressed most of the problems with the previous generations.