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About Ledrbuk

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    New Member

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  • Location
    North Dakota
  • Drives
    2004 gmc kodiak c4500
  1. Air Brake compressor cycling on/off

    If you get power to the air pump with the key off it's the relay located under truck next to air pump. It is bad and is running the air pump till the pressure switch says the tank is full and shuts it off. Also have a small air leak or check valve leaking.

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