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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15181
Experience:  GM Grand Master Technician 2007. 14 years experience.
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I have the same problem on a 2011 Suburban as mentioned in

Customer Question

Customer: Yes I have the same problem on a 2011 Suburban as mentioned in this post. I have no power anywhere. I took the battery to autozone and it tested well. THe entire vehicle is dead. I assuming a fuse or a ground somewhere?
JA: Thanks. Can you give me any more details about your issue?
Customer: Just what I have said above
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Customer: yes. THanks you
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Submitted: 1 year ago.
Category: Chevy
Expert:  GM Tech (Cam) replied 1 year ago.

Hi there, I am Cam. Can I get your first name please?

Do you have a test light to verify where power loss is?

My suspicion is the mega fuse on the back of the firewall behind the battery between the battery and the fuse block.