Hummer H3 SOS HELP!!!

[Taconinja77]

I have a Hummer H3 and after my battery died my stereo stopped working. I have power to my stereo because the disc drive and radio still produces sound when my stock stereo is in but with both my aftermarket and stock none of the dials work or provide any visuals. I’m clueless of what is wrong and my aftermarket doesn’t even play any audio so no matter what stereo I have installed they both don’t work. Does anyone know what is wrong? 

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