Diesel Place banner

low oil pressure

  1. Question: Low oil pressure

    Duramax Second Generation: 2004.5-2005 (LLY)
    My oil pressure cold is 45-50 motor is very quiet. Warms up pressure is 25 idle 35 running. Lifters rattle once warned up. Has anyone replaced the oil pump with a high performance pump and got a significant pressure increase. 2005 LLY
Top