Question about 1999 Chevrolet Blazer

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Radio says lock on my 1999 chevy blazer

My radio says lock after we changed the battery and cant get it back on someone said we need a code that it is in our owners manual but we dont have one

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You can try to download a PDF version ( GM.com or CHEVROLET.com) and even order cd or paper version if they still offer it (10 years old), but it may or may not contain the info you need to unlock the system.There are two versions of this security system, one can be programed using the radio buttons or a scanner the second is scanner only.Wish I could have been more help.Thank's in advance for rating me !

Posted on Jan 22, 2009

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Posted on Jan 02, 2017

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