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  1. J

    2015 LML P0483 Issue

    Haha. Probably right. I'm a field mechanic working on heavy equipment. Something just didn't seem right when the fan slowed down and could tell it was just spinning off of centrifugal force. Thanks for the wiring diagrams Ron!
  2. J

    2015 LML P0483 Issue

    Thank you for saving me the money going to the dealer. I replaced the clutch last night with the GM clutch. I got an immediate response and its acting as it should. No CEL and back to normal on these hot days! Sending the pos clutch back to parts geek. Thanks again bud!
  3. J

    2015 LML P0483 Issue

    Thanks Chevy1925 and NC-smokinlmm for the input on this issue that's been draining me. Ordered the OEM through GM this morning and hopefully it'll resolve my issue.
    • JohnS
    • Post #14
    • Forum: LML
  4. J

    2015 LML P0483 Issue

    Really!? I can stop it with my hand while the engine is running after I pump the throttle a few times. Is this why I see so many threads wanting to convert the clutch to another option? It's worked great till 101,000 mi then it popped up. I scheduled an appointment with the dealer on Monday but...
    • JohnS
    • Post #12
    • Forum: LML
  5. J

    2015 LML P0483 Issue

    Unfortunately not oem. Bought this for a replacement clutch thinking my truck would be such a snowflake and sensative.
    • JohnS
    • Post #10
    • Forum: LML
  6. J

    2015 LML P0483 Issue

    Question for you Ron. I back probed (White) Cooling Fan Control Signal. Had zero volts when I first plugged in until I heated the motor up to 210 degrees then got my 13.84v with no cooling fan engagement. Shouldn't the fan engage at that point? Grey/Red has the 5v signal, the ground is good from...
  7. J

    2015 LML P0483 Issue

    I appreciate the info Ron and will look into those areas. I've probed the wires back to the ECM through the wiring harness already which lead me to think its either the ECM or a bad replacement part.
  8. J

    2015 LML P0483 Issue

    Appreciate it!
  9. J

    2015 LML P0483 Issue

    Hey everyone, I'm looking for help with my P0483 fan rationality check issue. I replaced the fan clutch, swapped the relay with known good from another truck, replaced the ECT, cleaned the grounds and they ohm out under .5, I have 12V and the two signal 5v all at the 5-pin plug. Upon start up...
    • JohnS
    • Thread
    • Replies: 18
    • Forum: LML
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