454fan Posted May 20, 2016 Report Share Posted May 20, 2016 Hey all. 2003 silverado ss. couple weeks ago my two bottom break lights stopped working. The one over the rear window lights up, but not the bottom two. First I looked at the bulbs, they are fine. I put two new ones in anyways, and nothing. I checked both fuses that were for rear break lights, and they were fine. Someone told me that the break switch on the peddle was tied into the light above my rear window, so maybe its not that? If it is, how do I replace it? I did some reading and someone wrote it may be the wiring harnes thats connected to the turn signal. So I was going to go get one of those. But the problem was not anything obvious . So I wanted to ask the forum for help. any ideas? Thanks Quote Link to comment Share on other sites More sharing options...
Downeast Johnny Posted May 21, 2016 Report Share Posted May 21, 2016 It's raining too hard for me to go look right now but I think that there is a connector at the left rear corner of the bed, (Under the truck attached to the frame). That connector hooks the brake light assemblies to the wiring harness coming from the front of the truck. I would pull that connector apart and check it for corrosion. The third brake light, (On the back of the cab), is not fed by that connector. Quote Link to comment Share on other sites More sharing options...
eberhama Posted May 21, 2016 Report Share Posted May 21, 2016 The brake lights are on a separate fuse from the third brake light, maybe check that first. Do the taillights and turn signals function normally? Quote Link to comment Share on other sites More sharing options...
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