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TrailBlazer 2002-2009
The TrailBlazer, originally introduced as an upscale Blazer, was produced from 2002 to 2008 with a powerful I6 engine and with a monster V8 offered in the Trailblazer SS
Platform: GMT 305, 360, & 370.

What's this for?

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Old July 15th, 2019, 3:45 PM
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Default What's this for?
I just bought a 2004 Trailblazer. While tinkering I saw this wire next to the fuse box that isn't connected to anything. Anyone know what it's for? I thought it my go to the post but wanted to check here.

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Old July 15th, 2019, 7:37 PM
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Should be factory brake controller wiring. It's usually taped to the harness. You connect it to that stud when you install a brake controller.
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