May 09, 2020 · I had a 2011 Sierra that did similar and it was the steering wheel position sensor. At the time it was under warranty. It would come on and go off with no other symptoms. The dealership couldn’t find the issue. Because when you turned off the truck it would not reappear. It came on one day and I drove it straight there.
Nov 14, 2018 · I drove the car for about 3000 miles with no SES light or any StabiliTrak issues. One random day in stop and go traffic the service stabilitrak light came on while sitting still. As soon as i started rolling the light went off. This kept up for a few cycles then I got a SES light and the service stabilitrak light stayed on.
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StabiliTrak activates when the computer senses a difference between the intended path and the direction the vehicle is actually traveling. StabiliTrak selectively applies braking pressure to the vehicle brakes to help steer the vehicle in the intended direction. StabiliTrak comes on automatically whenever the vehicle is started.