GM Service Manual Online
For 1990-2009 cars only

If the glove box has a lock , put your key into the lock and turn the key counterclockwise. To open the glove box, pull the latch release.

The glove box door has a set position that prevents the door from lowering too far. Open the glove box until the door is partway open, then pull the door down if you need it fully opened.

To close the glove box, the door must be pushed up past the set position. To lock the glove box, put your key into the lock and turn the key clockwise.