I have a 2008 Chevy Impala LTZ. On most days I really like this car, which is good since it is my only ride. Suddenly the error messages appeared on the dash: Service Stabilitrak, ABS, and Traction Control. Other than getting bad gas mileage it has been doing okay. I am concerned because I need to drive to a big city and want an idea of the most common reasons for this before I go to a mechanic.

Amy thoughts are most appreciated.

Thanks very much in advance.