How do you unlock Chevy Corsica from outside without a key?

To unlock a Chevy Corsica without a key, you can try using a slim jim or a long, thin tool to manipulate the lock mechanism inside the door. Alternatively, you could use a wedge to create a small gap in the door frame and insert a rod to press the unlock button. However, these methods can potentially damage the vehicle or its locking mechanism, so it's advisable to contact a professional locksmith or roadside assistance for help.