lb7 maintenance

  1. 03LB704.5LLY

    FICM Failure??? Code P1658

    Hi guys so I was driving my Lb7 to Daytona (it’s about a 2 hour drive from me) to pick up some parts for my work truck. So I was going around 70 on the interstate when my truck had a decrease in speed and the CIL came on. I pulled over and shut it off to see if I could find the issue. It was...