Steering Is Tight problems of the 2018 Chevrolet Silverado 1500

Driving back from the holidays in another state. Stop to get gas, I check tire pressure and put fuel additive in the fuel tank. I get back on the highway, going the speed limit which is 75 mph. All of a sudden the steering gets tight as I was next to a rolling semi . I stop at a rest area to see if I can find any visible problems but I could not. At lower speeds the problem seemed to be worse. High speeds the steering was tight and trying to switch lanes it almost feels like the steering locked. About 25 miles later the problem. Seemed to be better but eventually came back and the next day it was bad again. The highway I was on (i20) was recently re done so it was smooth road. I've done research and can only assume it has something to do with the eps system.