Installing Aftermarket DUAL brand Stereo in 2003 Chevrolet Avalanche z71,...

Vato6_9Loco

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...doesnt turn on...? Attempting to install an aftermarket stereo (Dual brand) into a 2003 chevrolet avalanche with wheel controls. I purchased a stereo wire harness from autozone that is compatible with this year truck. I wired the stero harness I purchased with the stereo harness that came with the stereo, but the stereo doesnt turn on. I know its getting power because the red security light that blinks when the face is removed, blinks, but when the face is on the radio, it never power ons, no sound ever comes out. What could it be?
 
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