Need a factory stereo wiring diagram non-Bose system?

2011 GMC SIERRA

142,000 MILES • 4.8L • V8 • 4WD • AUTOMATIC

DOUG WINOWIECKI

MEMBER
2 POSTS

Need a factory stereo wiring diagram non-Bose system 2011 GMC SL 1500 Sierra color coded please.

Jul 31, 2023 at 10:25 AM

STRAILER

✓ASE Certified Mechanic
54,837 POSTS

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.

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
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Jul 31, 2023 at 5:27 PM

DOUG WINOWIECKI

MEMBER
2 POSTS

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.

Images (Click to enlarge)

Aug 1, 2023 at 9:52 AM

STRAILER

✓ASE Certified Mechanic
54,837 POSTS

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