I bought a 2006 Yukon SLT this past May. I noticed that the MIL light does not come on when I turn the ignition key. My code reader shows a P0650 code which indicates an open MIL circuit. I dismantled the instrument cluster and apparently someone in the past has removed the tiny LED which is to illuminate it. Does anyone know the specs or the specific bulb which is to be used for the MIL and where I might find one? I hate to send the cluster off for a complete rebuild when all the instruments are working fine. Thanks.