Software problems of the 2015 Chevrolet Silverado 1500

On several occasions the truck will completely shut off while in a turn. All dashboard information shuts down. On several occasions driving about 35-50 mph going straight and then turning on blinker attempting to make a lane change the truck cuts out and shuts off for a second and turns back on. The headlights flicker and using power windows sometimes causes the truck to shut off for a second and come back on. This happens in park, turning, or driving down the road. I have already had the vehicle in the shop and this is after the software update, and the vacuum pump for the brakes was replaced twice.

I brought my vehicle to the dealership that I bought my vehicle from after it showed what I believed to be signs of the electronic power steering (eps) recall affecting it. The dealership applied the fix that gm had and sent me on my way. The very next day I experienced what I believed to be the electronic power steering system acting up again. This time I was traveling at 55 m. P. H. On the highway beginning the interchange to another highway and could not turn the steering wheel for approximately 2 seconds. The loss of steering was almost as soon as I started the turn and almost caused me to go off of the highway. Then for the next 5-7 seconds I was able to manually turn the steering wheel without power steering. All of a sudden the power steering turned back on and, because of how hard I was trying to turn the wheel, I almost ended up in the lane to my right where another vehicle was. I had no prior issues like this until the recall was worked at the dealership. Almost immediately after leaving the dealership the truck was acting weird, and at a stop the truck felt as if it was struggling to stay running. The dealership was contacted and agreed to have it towed back to them two days later. Now they are telling me it is due to bad battery cables and that caused power loss during the turn. They spent hours scanning the system to find that this actually happened, which they claim they could not find, but there was a warning light that showed on the dash notifying me that the power steering was out and to drive with care, so I do not understand how they did not find it during their scan. They then tell me there is a service bulletin, that came out a month after the eps recall did, and it will be an out of pocket expense. I cannot stop thinking that this issue is a direct result of the eps software fix and should be included to the recall to replace the battery cables.