The buzzer on the dryer is one of two low points.  There is no way to turn off this annoying buzzer.  If you  need a left side dryer vent, forget this dryer.  The knockout took me over an hour to remove. It was ugly.  Standard dryer vent ducts cannot be used to replace the first duct attached to the blower.  Apparently 4" at GE is different than 4" everywhere else.