When my truck is running between 55 and 60 mph and shifts into overdrive I get some bed shake. I don't feel any funny vibe in the wheel or pedals. Could this becaused by a torque change and isn't something I should worry about is it normal operation. I know the vibe issue has been beat to death but with this being my first new truck and wanting to get 150,000+ out of it I want to make sure I get the early problems taken care of.

Thanks.

Jansen

 

When the trans shifts into overdrive it shouldn't cause any kind of vibration by itself-you may just be reaching a speed where your tires are slightly out of balance.