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Just thought I would throw this out to the forum about a issue I'm having with the trailer plug on my 2005. I have constant power, brake control, right turn/hazard, and clearance/running lights. I have no left turn or hazard lights. It is a factory wiring setup and have chased it back to the 4 way plug and still no power. Just thought before disassembling everything and cutting all tape and wiring loom, I would see if anyone has had this trouble, if there is a common spot in the harness for the trouble or even a wiring diagram for the factory trailer plug wiring harness. Chasing electrical issues is frustrating enough and any help is appreciated.
I have the exact issue on mine and traced it to the Total Integrated Power Module. From my understanding, it should be able to be reset 5x from the dealer, but mine likes to charge me out the arse and probably would deny that. The cost of a new one runs roughly 1k. I'm more willing to pay for a ticket than to pay my dealer another thousand bucks but it irks me nonetheless. I'd be willing to bet yours is the exact same problem. I have no left turn signals on my trailer but trailer is fine on my bro's truck.
I know a while back someone had posted a solution for a fuse to go inline to that plug to resolve the issue but I forget what it was. I wouldn't pay the coin for a new TIPM without that option installed already. Shorting it out and causing your problem comes from hooking up to a trailer with a short or bad wiring.
I'll have to give that a try. Its a pain in itself if people can't wire trailers right, but if this is how the pickups are rigged to handle it its a joke in itself. I'll see if I can come up with that thread about the inline fuse to remedy it if the dealer will reset it.
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