Trunk Wiring problems of the 2010 Chevrolet Traverse

My car engine continues to run while the key is out of the ignition. This has happened several times, I have to put the key in and try turning the ignition off several times before the engine will actually shut down, after each incident this drains my battery and then my car requires to be jumped it also has takes several attempts to get the car running again and sometimes after this happens it puts my car in "limp" mode meaning the car will not shift out of second gear while driving it. I took the car back to the chevy dealer (bob steele in cocoa FL) explained to them the issues and told them I have googled the issues as well and that lots of people are having the same problem with the engine still running while the key is in their hand and chevy stated they never heard of this before. The dealer called and stated that it would cost me $200. 00 to replace my ignition in my car which I did and that would fix the engine running issue and would fix the "limp" mode issue. The repair lasted a week and then I stopped to get gas and the car would not shut off again after several attempts of turning the key to the off position it finally shut down, after getting gas it took several attempts for the car to turn back on ( at this time it did not go into "limp" mode) I took the car directly back to the dealer who has had the car for four days now. I just recieved a call from the chevy dealer stating it would now cost me $1200. 00 to repair the fuse box and wiring that has some how become wet in my glove compartment. . Again I stated that I am not the only person having this problem and that other people have also been told that they have water in their fuse box (which I assume should of been sealed properly to prevent this from happening)so I am now driving a car that refuses to shut off or can put itself into "limp" mode affecting the driving ability of the car.