It does not appear that the hood over the lamp is hinged, so one has to assume all servicing is from the front.  A similar GE range includes these instructions for re-lamping:

"The fluorescent lamp illuminating the work surface is easily removable.  Place fingers under each end of lamp; press upward and roll bottom of lamp away from you.  It will fall into the palms of your hands.  To replace, lift lamp into the socket, gently roll toward front of range until it stops.  Then roll lamp upwards and toward front of range until it clicks into place."

Hopefully this helps.

lawrence

Removing the screws shouldn't be required, but it's possible that the bulb has been in there for such a long time that grease has built up around the sockets.  It might make it easier if the hood were removed, give it a try and be sure to hold onto those screws!

lawrence