Set out this morning with our new used 5th wheel. Trailer brakes working fine. Then started getting message from 2015 3500hd that the "trailer brakes need serviced" and i would have no trailer brakes. This became more frequent and of longer duration as the 400 mile trip progressed. The problem would come and go but became progressively worse until I had no trailer brakes at all the last 100 miles from Payson to Mesa. Fortunately the engine brake provided excellent braking.
Any ideas on the cause of the progressive brake disappearance?
Any ideas on the cause of the progressive brake disappearance?