I cannot find any info on the given model number, please check it.
I tried here and the GE site.

Sometimes growling is due to a low fill.
Most units should fill to just under the heating element.
If you can open the door when it is growling and then when you close the door it continues to growl try the following
Open the door and add a quart or two of hot water. If the growling stops then low fill is the probable cause. Just be careful to not overfill the unit.
The most common cause of low fill is a partially clogged screen filter on the input side of the water valve. Check/clean it.

Could also be debris in the sump.
Check for this. Be careful as there is often broken glass in the sump.