2014 CHEVROLET SILVERADO 2500 Steering Problems

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...

AT SLOW SPEEDS WHEN BACKING UP THE STEERING WHEEL GET HARD AND THEN LOOSEND UP. MOVING FORWARD AND MAKING A TURN THE STEERING WHEEL GET HARD AGAIN AND THEN LOOSENDS UP. IT BECOMES A STRUGGLE TO TURN GET HARD AND THEN LOOSENDS UP. THIS STARTED HAPPENING AT 30000 MILES AND CONTINUES. THIS PROBLEM IS VERY UNSAFE IF THAT STEERING DOES NOT LOOSEN UP AT HIGHER SPEEDS IT COULD MEAN DEATH AND INJURIES TO OTHER PARTIES. THIS PROBLEM HAS CONTINUED TO HAPPEN TO US OVER 15 TIMES. I BOUGHT THIS VEHICLE BRAND NEW OF THE LOT, IM THE ONLY OWNER.

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.

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).