Question about Whirlpool GU1200XTLS Stainless Steel Dishwasher

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Removing Chopper Cover

I have a six year old Whirlpool dishwasher that has a loud humming sound while the motor is running. I have tried to remove the chopper cover after removing the two square drive screws, but it is not budging. Is there some trick or catch release that I am not aware of? Thanks.
Ric Nicholas

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  • RicN Feb 24, 2008

    Thanks. I don't want to trouble you any more since further help probably requires getting the Premium Assistance Plan, but I sure would appreciate learning how to pull the pump motor assembly. That seems like a lot work, or else it's simple and I'm confused by the terminology.

  • RicN Feb 29, 2008

    Thanks for trying but the tabs are not as they shown for the Kitchenaid. My Whirlpool doesn't show any tabs. It seems like they are hidden, or prying might be necessary. I don't want to break anything so I'm still listening the noise. In summary, it seems the tabs are different than the Kitchenaid.

  • Gary Davd
    Gary Davd May 11, 2010

    you need to pull the pump motor assby to access it there are 3 tabs under the pump assby that locks it in



3 Answers

Master Tech,

Three months later you link to the service manual was a tremendous help to me!



Posted on Sep 09, 2008

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Go to This is foer a Kitchenaid unit but the same pump mtr assby goes in the WP it will explain how to do what you want .PLZ Rate this repair Thx Gary

Posted on Feb 25, 2008

  • Gary Davd
    Gary Davd Feb 29, 2008

    Well sorry for trying to help you I guess this service manual on your model wont help now..Good Luck


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Service manual for gu1200 and gu1500$FILE/8178022.pdf

Posted on Jun 12, 2008

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Starting the dishwashing cycle, extreme loud noise when dishwasher starts pumping water. Loud noise stays during pumping cycle. Dishes are clean and dry and no water in tub when cycle finishes.

If your unit is a Kenmore or Whirlpool (there are several other brands that use many of the same parts) and is less than 6 years old then it may pay to first check and clean out the chopper assembly for hard debris. If that doesn't do it then you may want to consider replacing the motor and circulation pump as a complete unit for between $160 and $200. Not too difficult a task for a moderately handy guy with some tools. Maybe 2 hrs. The bearing itself is not serviceable I understand, and would be considerably more difficult. Over six years old then you can buy a great quality machine for about $500.

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Hello, Thank You for using FixYa. I will be helping you today.There is a chopper blade under the filter that can cause this if something got under there. If you remove the lower spray arm there are three screws you will see remove those and lift the cover out. Then there are screws holding the center down i think six of them remove them and lift out Under that are two more screws remove and lift filter out,Under that is where things get stuck and stop motor or cause loud noise.
Thank You and please rate my answer if it was helpful..

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I also can't get the chopper cover off my dishwasher.

My chopper cover was held in place by two screws, but even after removing them I found I needed to use a pair of 'channel lock' pliers to grasp the plastic cover and pull it up and off. Yours may just be stuck from a few years of use and thermal cycling.

Putting the whole thing back together was an equal joy...

Aug 23, 2009 | Whirlpool GU1200XTLS Stainless Steel...

1 Answer

Dishwasher starts to fill then just hums

Sounds like a motor problem. Behind the chopper is an access to the impeller, try turning the impeller or the chopper blade and see if the motor will rotate. If it doesn't, then something is stuck preventing the motor from running.

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sounds like a bad motor, you can get a complete replacement of the motor and sump assembly for about $150-175. one piece includes new motor and chopper assemblies, less then a hour to change.

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Our dishwasher is making a loud noise during wash cycle.

if you have a torx 20, and torx 15 screw driver, you an remove the screws from the top plate of the wash motor, and underthere youll see another t15 screw converingthe "chopper" assy, sounds as if a seed, of chicken bone, perhaps apiece of glass hasgottne down there

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Loud Whirring Noises

very possible that it is indeed something stuck in the chopper assemble, remove the lower wash arm, from ther youll remove 4-5 torx15- screws and then under there you find another torx 15 screw , after removng the screw you can pry up hte cover form the right side and reveal the chopper assembly, i would refrain form removing the chopper if at all possible, its kinda a pain in the rear to put back in, buit you can cean any junk out if ness.

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1 Answer

Dishwasher not starting

First I would check the chopper it maybe jammed or something blocking it...
1) remove wash arm holding the center and rotate the arm.
2) remove upper wash tube rotate to the right
3) remove screen screws to remove screen
4) pull up accumulator
5) reomve screw on chopper cover...
6) check chopper
7) if chopper clear .. you will need to replace motor

to replace motor
1) remove toe cover
2)remove drain pump
3) remove 3 hold tabs by sliding them out.
4) lift out accumulator base.
5 remove and replace motor.

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Loud whining noise while washing

It may be debris in the food chopper or the motor going bad.

Inspect food chopper:
Remove lower spray arm and rear water supply tube to upper spray arm. Remove torx screws that secure the sump cover. Remove the rounded cover on the left side to expose the chopper assembly. Inspect for breakage of blockage. There may be an additional plastic screen to remove first.

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