3rd brake light problem - GMC Savana Forum
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post #1 of 2 (permalink) Old 12-18-2017, 09:40 AM Thread Starter
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3rd brake light problem

my van has a LED third brake light CHMSL (center high mounted stop light) that is not working. The LED light unit does light when hot wired off the van. Both L & R brake lights function as do the turn signals but there is no 12v at the CHMSL connection. The ground is good. Need to find where that 12v feed starts after the fuse for that LED
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post #2 of 2 (permalink) Old 12-20-2017, 05:39 AM Thread Starter
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Update! I found some wire diagrams and harness color charts. Once I had them finding and repairing the problem was much easier. Thank you
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