HI EVERYONE , I AM GLENN I AM FROM BROOKLYN, N.Y. I HAVE A 2003 SS MONTE CARLO WITH 84,000 MILES.............WHEN I DRIVE SOME TIMES MY CAR KICK'S IN HARD SOME TIMES IN 2 GEAR !!!............THEN IT GO'S WAY THEN 2 WEEKS LATER AND DOSE IT AGAIN..........THEN GO'S AWAY AGAIN !!!!!! WHAT DO YOU THINK IT COULD BE ??? PLEASE HELP NEED SOME ANSWERS..THANK YOU . GLENN