I used a PAC recently. Forget the model at the moment, but I did the research and found it was the thing I needed. I installed it in my 04 yukon with bose. Everything was working great, but I get no chimes- I honestly don't mind! but i noticed that my key fob doesn't seem to work. I tried changing the batteries in it but it still doesn't work. I'm not sure that the PAC even causes the problem but I have a feeling it did.