Lot\'s of Static coming through the speakers on 99 Tahoe. What could it be? It's sounds like interference, My wife drives the truck and you here a whining sound come through the speakers and it intensifies when she accelerates. I'm thinking it could be a bad ground.. or just the stereo is going bad. It will even do it when she drives and turns the stereo off. Anyone heard of this? and if so.. what's the fix or areas to look at?