Product review (3 stars): Bought this in 02/2011; now 04/2013 it makes high pitched whine.
We bought 4 LG appliances in 02/2011 from Home Depot with extended warrenty. Dishwasher, Microwave, Range and Stove. All Stainless Steel with loads of high end features.

The Diswasher is very quiet and cleans well when you use a decent detergent with drying aid. You can read the other 4 and 5 star reviews for all the upsides of this dishwasher. We were very happy with it for the 26 months that it worked well.

But after 2 years and 2 months, it is making the dreaded high pitch whine that others have noticed. It appears that the whole sump assembly will need to be replaced at a cost of $140.00 plus my labor. This site sells the sump assembly:  repairclinic dot com. Plus has a nifty video on how you can do it yourself. Here is the part & item #Item #1472730 (OEM Part)  MFR #AJH31248604. (Hope this helps somebody.)

Some on the internet say that the squeal is caused by the impeller loosening up. We took that section apart, pretty simple, just philips head screws and found that the impeller wasn't really tight, just a little loose, so we really tightened it down and will see if that solves the problem. If not, I will have to replace the sump assembly.  I figure it will take me about 2 hours to do that.

The worthless extended warranty that Home Depot sells is no good; they won't cover the repair because the whine doesn't impact the performance of the washer. Even though it drives everybody from the house because it penetrates everywhere and may predict a bearing failure, they won't cover the repair. Thanks for nothing, Home Depot. This extended warranty company is in the Philippines, and although the gentlemen spoke very good english I suspect his whole reason for being is to deny claims. I bought my last appliance from Lowe's; pretty much done with Home Depot as an appliance source.

All in all, until the squeal, was happy about the LG Dishwasher. But I would have expected the unit to last longer until it needed a repair.  I got about 5 to 6 years out of my previous whirlpool until it needed a pump repair. Thus the three stars.

We have had no problems with our other 3 LG appliances.