Need a factory stereo wiring diagram non-Bose system?

2011 GMC SIERRA
142,000 MILES • 4.8L • V8 • 4WD • AUTOMATIC
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DOUG WINOWIECKI
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Need a factory stereo wiring diagram non-Bose system 2011 GMC SL 1500 Sierra color coded please.
Jul 31, 2023 at 10:25 AM
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STRAILER
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Sure, here are the stereo wiring diagrams and a guide to help you test the connections.

https://www.2carpros.com/articles/how-to-check-wiring

Check out the images (below). Please let us know if you need anything else to get the problem fixed.
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Jul 31, 2023 at 5:27 PM
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DOUG WINOWIECKI
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Could you tell me what these wires represent? Thank you again. 2011 GMC Sierra 1500 sl 4.8 lt flex fuel they are from back of radio.
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Aug 1, 2023 at 9:52 AM
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STRAILER
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These are out of the back of the radio, correct? You can use the wiring diagrams to see where each wire goes and what it does.
Aug 2, 2023 at 6:21 PM
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