My Stabilitrack light comes on after I start I haven’t put in drive I was told it’s my egr valve

Hello, a malfunction of your EGR Valve will not cause your Stabilitrack warning light alone to come on. If your Service Engine Soon light comes on at the same time, it is remotely possible. Diagnostic testing would show a P0401 code (or similar) if your EGR valve is not functioning properly. Have diagnostic testing performed to include not only powertrain codes but also chassis codes to see what is going on with multiple areas of the vehicle.