Hello, I have 1999 Chevy 2500, with a 6.0 liter engine. It came with a factory towing package. This year I have no power to the trailer connector. I haven't hauled anything in two years. I have tested the wires along the frame up until the reach the cab of the truck and have no power. I also found a ground wire that was rusted up pretty bad on the frame. I grinded the rust off, and made sure it was getting good connection, but still nothing. Any help is greatly appreciated.