Question about 2003 Chevrolet Silverado 1500

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My battery die and I have jumped after that my radio said locked what can I do?

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  • 2 more comments 
  • elrebane Jul 14, 2010

    Did not work I tried it and never show me anything!!!!

  • elrebane Jul 14, 2010

    It is a gm cd player!! But I have tried those esteps and nothing!!

  • elrebane Jul 14, 2010

    Also my doesn't says "loc" it says "locked" does it make any differences?

  • elrebane Jul 15, 2010

    Still not getting out of the same message locked, 1&4 2&3 and nothing. What else can be done?



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Try This

  • Posted on Jul 13, 2010

    • 10 more comments 
    • NOT ME Jul 13, 2010

    • Turn on your car. Your Delco radio will show "LOC" in the LED display.

    • Step 2Press and hold down both the second and third preset buttons. Hold these buttons down for at least six seconds.

    • Step 3Write down the two- or three-digit code that appears in the LED display.

    • Step 4Press the AM/FM button on the radio.

  • NOT ME Jul 13, 2010

  • Step 5Write down the next two- or three-digit code that appears in the LED display. You should be left with either a four- or six-digit number. Turn off your car.

  • Step 6Call the Delco radio automated customer support line at 1-800-537-5140.

  • NOT ME Jul 13, 2010

  • Step 7Press "1" and then press the pound sign. The automated voice should respond "Invalid code, try again."

  • Step 8Enter the number 139010 into your phone and then press the "*" sign.

  • Step 9Enter the four- or six-digit number you wrote down from Steps 3 and 5, and then press the "*" button.

  • NOT ME Jul 13, 2010

  • Step 10Write down the four-digit code given by the automated voice.

  • Step 11Turn on your car. Enter the Delco unlock code using the procedure outlined by your GM owner's manual. Normally, the unlock code is entered with the "HR" and "MN" buttons on your radio.

  • Step 12Press the AM/FM button. If you have entered the code correctly, your LED display will read "SEC" and the radio will be unlocked.
  • NOT ME Jul 13, 2010

    Sorry for breaking this post into sections but for some reason it would not allow me to post it all in one post. Kept telling me to shorten the length of the post. All this post was curtorsey of

  • elrebane Jul 13, 2010

    I have tried 1&4. 2&3 and nothing came on the display!

  • elrebane Jul 13, 2010

    Nothing come on display after tried 1&4. And. 2&3 what else can I do!

  • NOT ME Jul 13, 2010

    If the radio shows inop, you will have to turn the radio on and either leave the ignition switch on for 1 hour or drive the car for 1 hour to return to the lock mode where the procedure will work. Did you do everything in the order as listed? Another thing to try is the last 6 digits of the VIN #. If none of this works call your GM dealer. Some will tell you the code for free. As a last resort you can get the code here for $9.

  • elrebane Jul 13, 2010

    Okay let me be more specific... I have bought a cd player on a savage yard then I installed in my 2003 chevy silverado, it works for a 2 months then my batteries went down "dead" after jumped got it runnung but, the radio said "locked" I have tried the 2&3 and the 1&4 presset buttons and nothing show on the display... what else can I do?

  • NOT ME Jul 13, 2010

    So you replaced the original radio with another GM radio from a salvage yard. Is that correct? If so, the above procedure should work. If it is not a GM radio what make is it?

  • NOT ME Jul 14, 2010

    Loc and locked, it means the same thing.

  • NOT ME Jul 15, 2010

    I think your radio is in the inoperative mode and you are going to have to leave it on for 1 hour to get it back to the lock mode and try all this again.

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