6 Panel Front Door With Glass - As it pertains to keeping your house in tip-top shape, nothing can be more annoying than a sliding glass door that won't slide.
The number 1 reason your sliding glass door won't side is because too much dirt and debris have clogged up the track of your door panel and the wheels. This really is not a difficult fix, but it is best if you've got another person present to assist you because sliding glass doors are rather heavy.
After the door is on its side, you can carefully analyze the track as well as the wheels. Mostly, you'll find the wheels are filled with soot and debris, and the track can be probably really filthy. Use compressed air and needle point pliers to clean the wheels. Take care to pull every last hair from the wheel bearings. It's wise to be diligent in this measure, and therefore you do not have to make a habit of this procedure.
While you're at it, clean up all the "mating-edges" of the door. This is where the sliding door meets with every other surface of the door frame. A general rule of thumb will be to simply wipe down anything that looks filthy. Don't forget, even whenever dirt isn't necessarily on the trail itself, it may fall to the course causing your door to demand another wipe down.