I just had this same issue and got it fixed immediately. The main window control panel on the front driver's side had a short in its circuitry that was affecting the passenger rear window. They had the part in stock. After replacing that part, everything worked normally again. The passenger rear...
I had the same issue but figured it out. It's the headlights. You need to turn them to "auto." The beeping is trying to warn you that your headlights are technically still on. The "auto" setting tells the truck they're off so it doesn't beep.