Bravada shaking

I have 97 Bravada and have had nothing but problems since we got it.Recently we had this shaking in the front whenever we acc.over 35 mph.So I rotated the tires and wallah it was a bad tire.Got it replaced then it ran good till recently I had a rebuilt transfercase put in.Got it back and the shaking came back.Rotated the tires again,but this time it didn't go away.The car is ok until I hit bout 45mph then it starts shaking again under acc.,get off the gas it's ok.Any advice would be greatly appreciated.

Where do you feel it the most, the floor, seat or steering wheel?

Where do you feel it the most, the floor, seat or steering wheel?

I feel it basically in all of these areas.It just feels like its coming from the wheel area.Thanks

Have you checked the idler arm? It is notorious for not getting lubed and then failing prematurely.

If it is bad it is easy to replace only two bolts hold it to the frame and one nut and tapered stud to the tie rod.