Question about 2004 GMC Sierra Denali

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04 trailblazer radio (Replacing factory with another factory)

Our 04 trailblazer has the display bulbs not working in the stereo so I wanted to replace with another I bought on ebay.
When pulling out the factory radio I need to have the key on when I pull out the wiring plug to the radio.
When I install the new factory stereo it says "locked"
Can anyone help me with this?

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Take vehicle to local chevy dealer and have radio unlocked,only option

Posted on Jan 21, 2009

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