Hello, I've had this static issue since I bought the truck back in March of this year. I have a 2007 Escalade and there's static when I'm on Aux even without any cords plugged in. For bluetooth it's an isimple isgm751 which uses the xm band, but there was no static on the xm band before the isimple install. The static has always been there for the aux. Cds, dvds, and am/FM are fine. Any one have any ideas? I've checked all the wiring but no luck and even tried to redo the ground.