Can not get hatch to open on my car. How do I get the panel off. on 2001 Chevrolet Blazer

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The tail gate on the car is ajar so the glass hatch will not open. Does any one know how to get into this type of rear. I can only get the panel off part of the way. Top middle.

All the parts seem to be working ok .
(1) Answer
Trim panels are typically installed with retainer clips / pins and screws. You need a trim tool (looks like kind of a fork with a handle on it, or a plastic piece) to slide between the panel and the door to pop the pins out where applicable.