I agree this should be in "problems" but I don't know how to change it to that category. I have the same problem and have posted it but have not had a reply. I thought maybe I was the only one. Beginning at about 35 mph, I hear a faint, high-pitch sound (hard to describe - maybe even wind noise of some kind... sounds like an air conditioning compressor noise - but it is not). This is very constant but not real loud - road noise and of course the stereo can drown it out. I am going to check out the fuel pump post - but let me know if you discover the problem. Thanks.
I have the EX model which comes with the luggage rack but no cross bars, etc. I was wondering if it could be the luggage rack that came with the Pilot? It has been a perfect vehicle except for a few sounds. Thanks for your response.