Gilly,
Just returned for the dealer with my 2000 ML430. Dealer replaced main fuel filter and updated lines. W/O also says he replaced fuel level sensor, which I think is part of the pump assy. He had told me he had replaced the pump, but it's not listed as such on the W/O. Anyway all this was done on my Starmark warranty with a smile. Although I had other cards to play, I didn't have to. Santa Barbara Auto Group has always treated me right-----no complaints! They know I'm a cash customer, maybe that makes a difference???? Thanks again for the info!!! Yes, squeal is gone!!

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David L