I went to the dealer yesterday to discuss options for replacing my PDC in my '04. 2 years ago, they "fixed" an issue I was having with a turn signal lamp. fast forward 18 months, and come to find out now I have no trailer brakes. I took it to an independent trailer dealer, and he said the controller was garbage, but also the PDC isn't reading the new controller. he somehow bypassed the PDC and installed a new brake controller, it works like a champ. so everything was working, for a week. the next time I hook up, I have brakes, turn lamps, and brake lights. but now no running lights. unbelievable. I cannot believe the incredibly poor quality of the electrical systems on these trucks. I am done having them put band aids on. I'm already over $700 in the hole because of this issue, the PDC and front control module on this truck are obviously garbage, so I said get rid of them and install a new one.