ok drove the truck home last night , went out this morning , no start , scanned it the volts at the ficm are 12 , what should be 48 reads 0 ? any idea's , I have read that ficm's do not read 0 , that they should read something ?
Mine, doing the test from the place online I got mine fixed. When I opened the little panel and measured, all I got was 12. I would check for a blown fuse....