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Integrated Brake Controller


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08 3500HD has the factory integrated brake controller.

 

At intermittent times (with no trailer hooked up) the DIC displayed "Service Trailer Brake System". Usually (but not always) in wet weather.

 

Any place to start looking?

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Can my ODB-II reader see the TBCM codes? Innova 3100, if I remember right.

 

Probably not. You need an advanced unit that can pull codes from subsystems. If yours can pull airbag and ABS codes, maybe.

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