Regular brake lights work fine. Third brake light does not work. Is this a bulb replacement issue or a fuse issue?
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2005 GMC Yukon Question: Third Brake Light
Answer #1hemicuda April 19, 2010, 09:51Master
More than likely the bulbs is the third brake light is bad
Answer #2Visitor, May 11, 2010, 12:09
I have the same issue with mine. Assembly is multiple LEDs so appears to be not getting power. need to take some time to put a meter on to confirm.