Answer by  
                                                                                          kingseanrocks (6)
                                                            
                          
                          
                                                          You are experiencing a misfire in your engine. You want to avoid driving the vehicle while the Engine light is flashing, you can cause damage to the catalytic converter $$! 
 This may or may not be related to the trac light issue, but either way, you'll need to have this looked at by a competent repair shop, and soon.