general problems of the 2014 Chevrolet Silverado 2500

The Silverado 2500hd and I think 3500 work duty pickups some don't come with a stabilizer damper for steering my 2014 work truck with only 19k miles has a shake so bad you can't drive on the highway, I first noticed the shimmer at 2 yrs the deal did alignments and said they could not find what caused it, now I took the truck in for check engine on an O2 sensor they said catalytic converter went bad and it needed alignment so I said yes to the O2 sensor and alignment then I leave the check engine light pops on and when trying to drive over 35 mph the steering wheel violently shakes back and worth, I talked to a commercial tech he said the stabilizer always goes bad on these and so does all the youtube videos but some videos show that some trucks have a stabilizer and some don't, but do have the mounting holes.

Temporary loss of power steering when attempting to turn the steering wheel at a low speed (I. E. Backing into a parking space, making a low speed turn into a garage).

While turning low speed(usually left) power steering would stop working. This has happened about a dozen times since I purchased the vehicle in 2015. I have taken to the Chevrolet dealer on (3) occasions(suburban auto group in sandy oregon. Tag number on first visit is #2288, 2nd visit #3639, 3rd visit #4698. They have recalled 2014 chevy silverado 1500 for the exact same problem as I am experiencing. I would hope that you look at the Silverado 2500 with the same scrutiny. The dealer wants me to start replacing parts at my cost to repair a vehicle I believe to be defective.