Hum from OnStar speaker in roof

[Ken Bowers]

2003 Hummer H2

I decided to disattach the speaker to stop the hum, so I pried the speaker cover off. It turned out the speaker was held in place by the cover. When I took the cover off, under elastic strain from the wires, the speaker slid back out of sight in the roof. I can fetch it back by a wire, but cannot reattach the cover. So I put the cover back into the roofing material hole, where it has stayed (so far).

By the way, I now cannot hear the hum: it is muffled by the roof.

When I sit in my Hummer, I feel surrounded by an interior made by Toys ar Us or Mattell. Everything is cheap and shoddy plastic. Everything squeeks and rattles.

Still, I really love my Hummer H2. I am planning a first trip up a mountain soon. The road up is rutted out by a wash, and I will have to strattle the rut.

[HUMTECH]

That is actually the inside ambient air temp sensor, if it cant read cabin temp by being out of place your auto climate control wont work properly

[SMITH23H2SUT]

I have always wondered why would there be a speaker over my head when Onstar/radio/nav all run into factory amplifier then into doors for sound.Actually there are two above the drivers seat. I'm assuming one would be the "Ambient Temp Sensor" and one a mic for Onstar.Which one is mic and which on is the A.T.S? Pics anyone? I'd like to tap into the Mic.

[HUMTECH]

This one is the microphone