Wow, theory, arguments and average guy! I spent 5K on my home speakers -imported from the UK-, that is not high-end, but I had to avoid a divorce lawyer, could have cost me a lot more. That is why, when I started the thread, I did not ask for FM trans/mod, I wanted to integrate my existing HU to the PC.
OK, back on track, that class II databus turned out to be pain in the you know what. I have to do a lot more work before touching that GM unit, not only I would lose the Onstar, the ding ding -Yes, I need it, I have kids that screw things up- but also the radio slave in the back seat. You see, my HU unit allows the back seat passengers to play another source, if I am using the radio, they can use the CD or the tape player, I would lose that If I remove/replace the HU.
In the mean time, while researching the subject (Crutchfield support is class A, they spent a lot of time on the phone answering questions and I did not buy anything yet) - I need to hook up my PC now, so, as a stop gap, I went to BB to pick up an FM mod, just to give it a try knowing very well that I would not be satisfied and that it is going back, well, they did not have the FM mod in stock, they had the trans, they only had one on the shelf from Monster ( I hate them, but that is another story), so, I took it, it was $49.95, any way, the sound was not as bad as some people on this board claim -windows rolled down on the highway test- , however, it was weak and a lot of interference from other FM stations. This morning, I went to a local audio shop, they basically did not want to touch the HU, however, they recommended an FM trans!, there claim was that it is digital and that GM dealers use it for their setup, and they offered to take it back if I don't like it.
I took it for $35, Well, let me tell you, that was yet another reason why I don't like Monster, it worked beautifully, more powerful and zero hiss or interference, the box written on it Digital 3, model FMT-3 Farenheit (no h), it has only 3 setting (Monster has 6 but it is crap) - As a stop gap measure, it is great for the price, I will keep it till I sort out the GM mess.
Sorry for the rant.