I've read a lot about HID lights here, and I just got off the phone with DDMTuning. I want to put HID's on my low beams, high beams and fogs, but I've read that the DRL's interfere with HID lights. I called and talked to Leif and he said that if the DRL's are full power, then no problem. Half-power, problem. Does anyone know if the 2009 Silverado's have full power or half-power DRL's? My dealer seems to think they are full power but don't know for sure. Also, will putting the HID's in give me a bulb out error? Thanks!!!