transmission shudder (vibration)
I have a 96 chevy k 1500. When in 2 wheel drive i get a vibration around 75 80mph. But here is the weird part in 4x4 when you get to 45-50mph and the trans shifts into overdrive/ or when the torque converterlooks up the truck vibrates utill you let off the gas and slow down or get the trans to shift down. Whould this be torque converter shudder or something else in the trans.