Bill Savidge for Model Number gmc275pdb4 The halogen light in the top of the microwave burned out. How difficult to change. Believe it uses AP6021432
Answer Bill, In order to replace the light bulb in the microwave you will need to remove the wall oven and go in from the top of the unit. The lamp WPW10440740 is the correct part needed. Read More... Answered by AppliancePartsPros.com | Wednesday, September 7, 2016