Product review (5 stars): LG WM800HWA - Would Not Drain and Made Low Grinding Sound
So after I did my research (i.e. read the users manual, visited the vendor site, and watched several YouTube vidz), I looked around the web for what I thought was the problem.  I took a guess at the pump motor because of the low grinding noise and lack of draining power from the pump.  Plus, I took everything apart and did not find anything obviously wrong.  I found this part on Amazon and figured since my washer is only two years old, the "OEM" pump motor must have been crap to begin with.  If I get another two years out of this aftermarket pump motor, it can't be any worse than the OEM... ;-)  I ordered the part on Friday, and believe it or not (hold on to your britches...) the pump motor was delivered on SUNDAY by USPS... no kidding!

I installed the replacement pump motor and it worked beautifully.  That, with the incredibly quick delivery time, earns this unit a full 5 star rating from me.