Came across this thread while searching for strange noise, and sounds like (pun intended), I am hearing the same thing as Rusttree had initially inquired about. However, I don't hear it all the time, everytime, nor on a regular basis. I am not hearing the climate control servo motor adjusting, as I would describe the servo motor sound as very simular to the sound my digital camera makes when turned on as the lens barrel is extending out from the body or when it is auto focusing. You can hear the climate control sound very well when in auto stop at a long light, with radio off.
I had heard the noise in question a couple of times after purchasing the Insight, and thought perhaps it was a self leveling gadget (rule this one out), since it was eminating from under the hood (sounded like). I noticed it several times while installing MIMA, as I had all doors, rear hatch, and hood opened; and I definently believe it to be coming from under the hood. I have also ruled out the fuel pump.
Now, I'm on a mission :evil:
Randall