2008 Chevrolet Tahoe Lights Problems

I BEEN HAVING SEVERAL ISSUES WITH THIS TRUCK FOR ABOUT 2 YEARS NOW. THE DASHBOARD IS CRACKING, THROTTLE SENSOR IS GOING OFF, FUEL SENSOR IS OFF AS WELL. THE LOCKS ARE GETTING STUCK ON MY REAR DOORS. THE LOCKS STARTED TO CLICK ON & OFF YESTERDAY. WIRING SYSTEM IS JACKED. MY SPEAKERS DON'T WORK. MY MOTHER HAS THE SAME TRUCK YEAR AND MODEL AND IS DOING THE SAME THINGS.

AS SOON AS WE DROVE OUR USED 2008 TAHOE OFF THE DEALER LOT WE HAD A TAIL LIGHT OUT THAT THEY CLAIM WAS JUST A LIGHT BULB BLOWN BUT IT STILL CONTINUES TO TURN OFF AND ON BY ITSELF. WE'VE HAD TO REPLACE THE DRIVERS SEAT BELT BECAUSE IT WOULDN'T RETRACT ALL THE WAY. THE DASH CRACKED ALMOST ALL THE WAY FROM END TO END AND IT IS GARAGED UNLESS WE ARE OUT DRIVING AROUND SO THERE SHOULD BE NO REASON FOR IT TO CRACK. THE DRIVER SIDE CHROME DOOR HANDLE IS PEELING AND HAS CUT OUR HANDS. WE'VE HAD TO HAVE THE ALTERNATOR REPLACED RIGHT AFTER WE BOUGHT IT AS WELL. THIS WHOLE TRUCK IS A LEMON! THE TRUCK IS CURRENTLY IN THE DEALERSHIP BECAUSE IT WOULDN'T START AND KEPT THROWING A CODE "SERVICE SECURITY THEFT SYSTEM." HAVEN'T HEARD FROM THEM SAYING WHAT IS EXACTLY WRONG WITH IT NOW. *JS