WHY DOES THE STABILITY CONTROL ENGAGED LIGHT MEAN on 2003 Cadillac CTS

THE STABILITY CONTROL ENGAGED LIGHT COMES ON THEN WHEN I HIT THE BRAKE IT VIBRATES FOR A SECOND THEN GOES AWAY. WHAT DOES THIS MEAN?

Asked by for the 2003 Cadillac CTS
Service stbility control what does that mean
1 answer