Question about 2004 Chevrolet TrailBlazer

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Top Rear brake light works, lower two brake lights don't

Checked both bulbs and fuses.  What could cause the lower two not to work but the upper one to  be fine?  Even both the turn signals work which use the same bulbs.

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This is known problem, and it is the turn signal switch.

Posted on Sep 29, 2008

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