Moses thanks for the reply. I have 2004 LJ non rubicon 4.56 gears, eaton e-lockers front and rear, dana 30 front, G2/Currie rockjock high pinion 60 rear, 35 inch tires, 4.5 inch rubicon express super flex short arm, np231 transfercase with gear driven speed sensor, nth degree tummy tuck and slip yoke eliminator. All these modifications were done atleast a year and a half before this started. I don't think it has anti lock brakes but i could be wrong. My only symptoms are limp mode and the codes it creates. Drives fine until it decides to go into limp mode if I turn it off and restart sometimes it does it again and sometimes it stops for days.
Jason