The steering wheel vibrates like you are running on the shoulder of the road.

What is your question?

It wasn't doing it all the time..but know it is. It doesn't matter what speed you are going either. I have read online about front drive shaft may have to be replaced or the torque converter. I want it fixed but I dont want the run around either like some folks have had. I bought the truck in February of this year . It had 49 k on it. It has 53 know. What can I do to get this fixed. Thank you.

What makes this problem better or worse?

Doesn't matter if engine is cold or hot.

How long has your 2016 GMC Sierra 1500 had this problem?

About 2 weeks after I bought it. Getting worse.