Hello,
Had an issue with our 2017 Silverado 3500 HD recently pulling a fifth wheel trailer. Purchased a new trailer and getting intermittent “check trailer connection” display. When display is on, no trailer brake! Never had an issue with our old fifth wheel or our dump trailer. Checked new trailer brake wiring front to back (it has an anti lock braking system), soldered all the connections for power and ground, still have had an issue. Replaced the ITBC module. My question is does it need to be programmed. I have heard no and yes!!
Thank You
