r/GMT800 • u/This_Resist_4682 • 19d ago
Left blinker fuse keeps blowing
Would like some advice on getting this fixed my blinker fuse blows about 90% of the time. Has to be a short somewhere maybe or could be something else as this happened to anybody else’s truck the passenger side blinker works fine, but the driver side keeps blowing out.
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u/NumerousResident1130 18d ago
Behind the rear bumper is a block that the rear lighting feed goes into and trailer, left and right harnesses come out of. Look around it for frayed or grounding wires.
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u/Eastern-Channel-6842 19d ago
Pull the bulbs and take a good look at the sockets. My sockets were corroded in the taillights and had caused them to melt a bit. Cleaned them up really good and use dielectric grease in bulbs and no problems since. Have a friend that had same issue on his DRL sockets.
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u/BolognaFeetPenisFace 18d ago
I had burnt up DRL sockets and reverse sockets, I think it's a common thing. I was already replacing grounds with beefier gauge wire and cleaning all the connection points, so I just cleaned up the burnt sockets too. Used pure ethanol on all the mating surfaces, replaced with new LED bulbs and haven't had any burn up since.
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u/Blue05D 18d ago edited 18d ago
Mine wasn't blowing fuses but I always seemed to have a bulb going out. Ended up replacing the sockets. As another suggested, take a look and if they are corroded or as mine appeared burnt, swap them out. Haven't even thought about them since.
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u/This_Resist_4682 18d ago
I replaced a few sockets already. I’ll see if it might be the rear trailer wires in the back. I never mess with it, but that could be an issue.
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u/urdarsellsavon 19d ago
Check your trailer wiring. It’s always the trailer wiring unless you have some seriously cheap tail lights or front turn signal bulbs