I’ve have a 2007 Chevy two wheel drive, regular cab long box. 4.3 v6- 125,000kms. Shakes between 90 to 110 kmh. I had a wheel alignment done, tires rebalanced. Still doing it. Purchased good set of tires and stock rims. Still doing it. As well as sometimes when going maybe 30 kmh I feel what seems to be something rubbing on frame. Looked can’t see anything. Any help is much appreciated. Cheers

 

might need new bearings or ujoints. Check for play.

 

where do you feel the vibration? steering wheel, body of vehicle?