Hello, this is my first post so I'll try to include everything I know. I have a 2008 Chevy Cobalt ls. It has 145k miles and one previous owner. I've just recently replaced all the sensors and the timing belt. In the past I've had issues with my drivers side door locking itself but as of today it won't open from the outside. I tried locking and unlocking the door, didn't work. I tried banging below the handle on the outside, didn't work. I tried using WD40 on the latch, didn't work. I'm not sure what to do. Any help would be greatly appreciated.