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Discussion Starter #1
I have a 2004.5 duramax crew cab 4x4 and the third brake light quit working and so did my brake controler. I can use my trailer brakes if i manually slide the brake controler and doing that will make the third brake light come on but the brake controller will not work with my foot brake. And the foot bake wont make the third brake light come on. Please help
 

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check the CHMSL (Center High Mount Stop Lamp) fuse under the hood. Its probably blown. Check there first.
 

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Discussion Starter #3
I looked at it and its not badbut replaced it anyways didnt do anything i can make it come on with the brake controller just not the brake pedal
 
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