top not secure notification and trunk will not open

I just bought this 2007 Pontiac g6 hardtop. Since i purchased it the sensor states that the top is not secure when it is and the trunk will not open. now the guy i bought it from reset it but it continues to say the same thing. i cant put the top down i cant open the truck and frankly i am extremely pissed off.. why cant this problem get fixed permanently? i forked out enough money for they car i shouldn't have for fork out more just to bring it to Pontiac dealer to fix the car..why is there not a recall on this ? I have been searching online and everyone is having the same problem. please let me know a permanent fix for this extremely annoying problem.