2008 BUICK LACROSSE Electronic Stability Control Esc Problems

I'VE HAD A LACROSSE 2008 SINCE FEBRUARY OF 2013 AND MY AIRBAG LIGHT FOR THE PASSENGERS GOES OFF AND ON PERIODICALLY AS IF THERE IS NO PASSENGER SITTING THERE. ALSO MY AIRBAG LIGHT COMES ON PERIODICALLY AS WELL AS MY SEATBELT LIGHT COMES ON AND I ALWAYS HAVE MY SEATBELT ON. I WENT TO A MECHANIC AND WE LOOKED UP MY CAR TO SEE IF IT WAS RECALLED AND IT WASN'T. IM SCARED THAT IF I EVER GOT INTO AN ACCIDENT MY AIRBAGS WON'T DEPLOY. *TR

I HAVE SPENT THE ENTIRE SUMMER BEING STUCK AT DIFFERENT TIMES OF THE DAY AND NIGHT. I CAN GET IN MY CAR AND IT WILL NOT START. THE STARTING DISABLED/THEFT DETERRENT FEATURE POPS UP ON THE EIC. I HAVE TAKEN THE VEHICLE TO THE DEALERSHIP FOR REPLACEMENT, KEY-FOB, KEYS, DOOR HANDLES, AND TRANSPONDER MODULE AND IT STILL IS CAUSING A PROBLEM. WHAT IS WRONG WITH THIS CAR!? *TR

I HAVE HAD MY VEHICLE IN AT LEAST TWICE AT THIS TIME, AND I AM TAKING IT AGAIN TODAY FOR THE DASH LIGHTS DIMMING. AT NIGHT IT IS NEXT TO IMPOSSIBLE TO READ THEM. YESTERDAY, IN ADDITION, THE CRUISE CONTROL WILL SET ITSELF AUTOMATICALLY, WITHOUT THE DRIVER TOUCHING A BUTTON. THIS IS VERY DANGEROUS, ESPECIALLY IN WHITE FOR SLIPPERY ROAD CONDITIONS. I HAVE BEEN TOLD THE DASH LIGHT PROBLEM IS A "NORM". I DON'T THINK SO, EITHER YOU FIX THE PROBLEM, OR GIVE ME A NEW CAR. *TR