Interior lights and fuel gauge

I have another problem with the grand am, the interior lights stays on all the time when the car is running, what will cause this? And my fuel gauge is odd if the key is out the gauge is above the full mark if you turn the car on the fuel gauge will go past the full mark, any one with any input on these two problems?

Was these occuring before the ignition switch change ??

Yes this was going on before the switch change.

Do the int. lights go out when you turn the key off, or do they take quite a while? This is mostly a guess, but my Beretta had a battery saver that would turn lights off after awhile (30 min?). I don't know if the G/As have that, but it's a thought. If it does have a battery saver, you probably just have a bad door switch. I don't know the year, but if it has a BCM, it could be much more complicated.

The fuel guage sounds like it's probably a bad guage/cluster. Check the resistance of the fuel level sender to be sure. Sometimes if you can get a wire in through the trip button opening, moving a guage to where it should be (or even bumping it) will sometimes make it work. Not a very good chance, but every now and then that will work.