So its an 02 with ~95K on the clock and is showing up with the P0380 code. Question is, how do you check to see if its a glow plug or the controller? I reset the codes with my PPE and sure enough it came back on. Was buying some stuff from autozone and thought I'd have them use their scanner on it and they pulled the P0380 code as well- and according to their computer, "The PCM has determined that a malfunction exists in the electrical circuit for glow plug/heater circuit "A"". Have plenty of tools and enough time to mess around with this- so I'm definitely not taking this to the stealership. Any help is much appreciated.