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When I bought my '97 Blazer the Factory installed radio was locked. I had to take it to the dealership to have them plug it into a computer to find the "code". They wrote it down on a piece of paper and said to keep it safe. Every time the battery is discconected the radio will loose power and lock up again. Their version of an anti theft device.

You could go to and get the code through them. There's a small fee but they seem to be able to get you the unlock code within an hour.

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โˆ™ 2015-07-15 19:05:35
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Q: How do you reset a radio that has been locked in a Chevy Blazer?
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