I went and had tires balanced. After I left and on way home 7 different warning lights came on: check engine, service SVC, Brake, service tire monitoring system, service trailer brakes, traction control, and 1 more referring to service tire monitor system.. I first had a speed limited to 62 mph, had hardly any brakes (Like no power to brakes at all) then reduced speed to 43 mph. I had to really push hard to slow down-stop the truck.

I called my Chevy dealer and they told me to take the negative battery cable off for a few minutes. I had to drive 43 mph about 20 miles to friends house to stop where it would be safe to kill the truck in case it would not start. I took the negative cable off and let it set for a few minutes (about 5), then put the cable on and started it up. About half the lights went off, and others stayed on. I killed the truck, took the neg cable off again and let it set a little longer (another 5). The rest of the lights and messages went off and the truck returned to normal, except for my low tire and service tire monitor system I went to my Chevy dealer next morning and they checked the codes and could not figured what happened to cause the problem, and rest everything. They said I all ready had the newest updates already. If my wife had been driving this truck she would have had a bad problem!