Without the proper scanning equipment, there isnt much you will be able to do. The ign switch tells the PCM to turn on, it then tells the glow plug controller/relay to turn on which lights the light. If it didnt do this before, I would take it right back. When they programmed the PCM they may not have gotten all the updates or other info that caused this issue.
Thursday, June 3rd, 2010 AT 3:13 PM