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.

Low beam

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Old August 12th, 2014, 8:19 PM
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Default Low beam

I have lost both low beam lights , bulbs are good fuses are good, any ideas ?
Old March 24th, 2015, 3:59 PM
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Default happens to me

This happens to me all the time. Driving and the headlights cut off but the brights work.
There is a relay in the fuse box up front. The same size is used for your fan clutch. Trade them out and see if your low beams come on.
I keep one in my glovebox and trade them out at Autozone about every 6 months. In a pinch you can trade the fan clutch but make sure you dont drive it long.
Duralast 20601 is the part number.
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