I have the same problem with my XL44 GE gas stove. The humming is quite loud and lasts about three hours then stops. It seems that the noise is coming from the timer/clock/oven control panel.
Haggisman
Feb29th/2008
The stove/range is off. Generally I am tucked up in bed as the buzzing starts around 3:00 AM and continues to around 8:30AM.
The model number is JGBP35WEVWW
Cheers,
Haggisman