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glow plugs

  1. C

    Ecm not enabling glow pug turn on !

    2004 h1 6.5td the ecm is not enabling the yellow wire on the ca. Style glow plug controller . I’ve replace ,relay controller , glow plugs , air in take sensor , coolant sensor , cleaned all grounds , I connected a light bulb to one on the glow plugs to see when they turn on . I can activate...
    • Craigb
    • Thread
    • california relay controller ecm glow plugs
    • Replies: 8
    • Forum: GM 6.5 Diesel
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