Engine Noise problems of the 2013 Honda Pilot

While driving in florida and louisiana, I noticed a low-frequency buzzing sound and vibration which could be felt through the steering wheel and floorpan. I believe it is associated with the variable cylinder management (vcm) feature. It could be felt when the vcm transitioned from 6 to 4 cylinder mode, with the rpm of 1700-1900 and speeds of approximately 25, 45 and 60 mph. It would occur with very light accelerator pressure, just maintaining speed, and disappear when accelerator pressure was increased, causing it to downshift and/or the vcm to transition back to 6 cylinder mode. This problem is less evident here in colorado springs (6000 ft elevation), which I cannot explain. I did not have this problem with a 2008 Pilot nor a 2008 odyssey, both of which had a similar vcm feature. My local Honda tech could "not duplicate" my concern and said it was "operating normally". The transmission also "hunts" between 4th and 5th gear.

Our Honda 2013 Pilot has had this problem since we purchased it new. There is an engine noise that sounds like metal vibrating/flapping. It usually occurs when driving between 40-60 miles per hour, but not always. It seems to happen when driving up a hill or turning. Although it also occurs when driving on a flat surface during acceleration. We brought it into the dealer service station twice. The first time they did not hear it, but neither could we. During the second visit. The maintenance supervisor said he barely heard the sound- it was faint. They offered no explanation, but said to bring it in when it is louder. I'm concerned that they won't hear it until our 36 month warranty expires! I've read one other complaint about this noise and see no recalls. Does anyone else have this problem with their 2wd 2013 Honda Pilot?.