I have a 2000 Grand Prix GT & occasionally the "ABS" light along with the "TRAC OFF" light will come on. After turning the engine off it usually stays off for a while again. It is very sporadic & I know if I took it to a repair shop it wouldn't do it for them. The car seems to drive fine but this is the car that my 16 year old son drives & it bothers me to possibly have something wrong with th brakes. Has anyone experienced this & have any solutions for me.