metalic
Member
07 jku the battery light came on and I checked the battery connections. I had the alternator rebuilt 2 years ago. I have a volt meter that goes in the cigarette lighter and it fluctuates from 12.8-13.5 mostly with the occasional high 13 or low 14. During the all day trail ride and a 3.5 hr. Drive home Sunday. I took my alternator in today and they said it tests fine. I cleaned all my battery connection, grounds to chassis , pcm ground was a lil loose but cleaned it and tightened. I then tried running jumper cables from the battery to alternator, chassis and pcm ground with no luck. Would it be my PCM ? My superchips shows no dtc codes.