2002 GMC Yukon Driver side rear tail light not working

2002 GMC YUKON
85,776 MILES • V8 • FWD • MANUAL
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KBLACKMON
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I have a 2002 GMC Yukon Denali, I notice about a week ago that the drivers side tail light is not working. I emidiately thought that it was bulb blown issue. I removed the casing but all the bulbs are in tact. But none of the lighting functions are working. Brake;Signal;Marker; or Emergency flash.

Is this a fuse? If not where do I begin?
Feb 13, 2009 at 10:13 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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