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2008 GMC Sierra 3500 Duramax Integral Brake Controller

Esacnj
Explorer
Explorer

โ€ŽMar-27-2018 11:31 AM

Warning light comes on whenever damp out whether trailer connected or not. GM replaced controller. I replaced 7 pin plugs under bumper and in bed and wiring between and still happens. Any thoughts?
Esacnj
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