My problem started the other day. It works fine while washing but when it goes to drain it makes a very loud buzzing noise. I have checked the upper and lower bearing rings. PLEASE HELP!! The model number is DU930PWSB0 and it is a whirlpool.
Hi.
If you are mechanically inclined take the pump a part and check for foreign objects.
If the noise is still there-replace the impeller kit.
The impeller kit [PART]AP3115180 [/PART]
The other solution is to replace the motor/ pump assembly,
which is much more money, but much less work and better chance of succeeding.
The motor and pump assembly [PART]AP5306229 [/PART]
Here are the breakdown diagrams and Replacement parts for Whirlpool DU930PWSB0 UNDERCOUNTER DISHWASHER | AppliancePartsPros.com
Thank you. Post the results.
My pleasure.
Did it work