Everything else works. I've checked all fuses, tore apart the dash, door panels, rear seat, lifted carpeting looking for broken wires. Would both right and left rear window motors go bad at the same time? Can anyone help?

Appears unusual. Let me add that if you don't regularly use the rear windows, they can stick to the gasket and burn out the lift motor. It's best to clean window gaskets with silicone spray twice a year and regularly run windows up and down.