Check This First: Is It in the Top-Right Corner?
Before anything else, look at where the spot actually is. If it's a small dot near the top-right corner of your screen — close to the camera — there's a good chance it's not a problem...
StabiliTrak is General Motors' electronic stability control system — standard equipment on Chevrolet, GMC, Buick, and Cadillac vehicles since the late 1990s. When "Service StabiliTrak" shows up on your dash, it means the system has flagged a problem and, in most cases, disabled itself...