My installer told me that getting the aftermarket equipment to play nice with the monsoon system is near impossible. I too have the OnStar issue, and after some filtering, GREAT sound (much better than stock)! He told me that it was an issue where Monsson purposly made it impossible to use an aftermarket sysetm with their amp setup. He said if I wanted to change out the amp and sub they could resolve the problem all together. I am considering that now. At the moment, I am living with the OnStar issue.
Let me know if you find out anything else.
|