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Q: no brake lights, fuse good, bulbs good. on 2002 Chevrolet Trailblazer

is there a sensor or a relay for the rear break lights. they are not working, bulbs are good, fuse is good.
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If the high mounted brake light is working then you know the brake light switch is good. There is a fuse for the lower brake lights in the rear fuse box (under the 2nd row seat, drivers side). Check the VEH STOP fuse. If the fuse is good and there is power to the fuse the chances are you have a wiring problem between the fuse and the rear lights.
If the fuse blows again be sure to check the brake light bulbs as socket plates for problems.
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