Ok I have a 6.0 2005 with 12,000 miles on it. As I was driving this morning I heard a buzzer go off, and I thought it was just the low fuel warrning, Then thinking to my self, I don't need fuel, so I looked down but the screen had already turned back to the mileage screen.... A few minutes later the buzzer went off and I look at the screen it said TBC fault??? I went to the dealer, with not much help, they didn't know what it ment either.. Ok help, anyone know any thing about this error message... Truck ran fine even with the message on.. ( message only stayed on about 10 seconds). Made arrangments to bring it in Friday...

PEacE....................
Jim

 

I believe TBC= Trailer Brake Controller