1) open the glove compartment; remove the contents
2) lift the glove box up slightly from its rests. on the inside of the box on either side there is a strip of rubber maybe 3/4" long. grab the edge closest to you and pull towards the inside of the box. once it's free enough to pull on, pull it in toward the middle while pulling back towards you. they should pop out completely. the glove box should now swing down completely
3) grab the glovebox on both side and pull towards you, focusing primarily on the side closest to the passenger door. the
glove box has a little bar about 1/4" in diameter that snaps into a c-clip on the dash. by pulling on this side, you're popping that bar out of the clip. the LH side is just a tab that slides into a hole in the dash, so once you have the RH side pulled, just slide the glovebox slightly to the right to get the tab of the glovebox out of the hole in the dash.
i've had mine out a few times lately to do the bluetooth kit and the door lock kit, so it's all pretty fresh. i gotta say, i'm VERY impressed with how easy the GTO comes apart while at the same time hiding all hardware!!
Mike