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  1. General Discussion
    Engine fan staying on. They are replacing the radiator sensor. Also the rear seat is rattling like crazy so they are replacing the seat bracket latch
    fan radiator sensor rattle rear seat
  2. Interior
    On my 03 when the fan is on setting 3 or higher (it gets louder the higher the setting), I can hear a roaring noise under the dash. It only makes the noise when the recirculation is on. If you turn it off it quits when you turn it on it starts right away again. We have another 03 at work that...
    dash fan noise recirulation roaring
  3. 11-16 LML Duramax Powertrain
    We have about 3500 mi on our new LML. Since new, it has sounded as though the auxiliary fan was engaging at idle at what seem to be random intervals. The fan will stay on through the first couple gears after a complete stop at signals/stop signs then sounds like it turns itself off. Some days...
    aux fan lml sound whoosh
  4. 01-04.5 LB7 Duramax Powertrain
    I'm not sure if I'm just being paranoid or if I'm really starting to have some issues. I've noticed lately that my operating temps (oil and tranny) stay around 210 (oil) and 200* (tranny). I know that these are "normal" operating temps and I expect it when it is 90* + outside. My concern is...
    cooling fan running hot
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