My rear hatch will not open on a 2000 Pontiac Montana how do I open it from the inside?

If the rear hatch will not open on a 2000 Pontiac Montana, it could be that the door look is dirty and jammed. From the inside, spray the lock part with WD-40 or Liquid Wrench. A little Liquid Wrench around the perimeter of the door near the seal is also a good idea. The lock can be popped from the inside using a screwdriver if necessary.