I wasn't even going to mention this, figured it was a fluke, fix it and forget it, but now it's a problem. When I picked up my H3 from the engine repair the radio didn't work, and tech scan showed a dead amp. New head unit was installed and radio worked briefly, but then was shorted out by the speaker amp. So I got am/fm, cd, mp3, xm, sirius, and no sound. New parts coming in a week, and I understand this was a problem with the 03 H2s, anyhow, I feel like the perfect storm of warranty repairs, and it would be nice if somebody from Hummer would show their concern! OUT!