Sharon B Mandeville , LA April 08, 2017 Appliance: General Electric Microwave PVM1790SR1SS Ge Microwave Pvm1790sr1ss: Top vent cover on microwave broke at the the mounting tab. How to replace Grille Ss. Unscrewed the old and replaced with the new! Very easy to replace. 4 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes