2004 Silverado LS high beams come on occasionally when the engine is off and the key is out of the ignition. They tend to come on after a couple hours of sitting in the driveway. Sometimes I can get them to turn off by turning the key w/o starting, and sometimes I have to remove the relay. It has also happened when I locked the door with the key fob. I had Oriellys pull the codes and got U1000, and the other code wasU1096 with is ICP. I have a brand new ICP with makes me think with those two codes together it could be the BCM. Any ideas?