Question about 1999 GMC Yukon

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No brake lights on 96 yukon

I have checked bulbs, fuse, and foot pedal switch and they are all fine but still no brake lights on '96 Yukon. I have also looked at connections
on rear trailer t-connectors and there is no corosion. Any suggestions?

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The brake fuse #1 is located inside the truck below the steering column. I am assuming you have verified there is 12v power at the fuse & thru the brake lamp switch (orange wire power in & white wire power out, when pedal depressed) at all times. After the brake lamp switch , power goes (white wire) to the Turn signal/hazard lamp switch & out (dark green wire-rt brake lamp & yellow left brake lamp)

Posted on Feb 16, 2009

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