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How to unlock a stock stereo ...

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Old 10-28-2011, 12:29 AM
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Default How to unlock a stock stereo ...

01.Turn the ignition ON (The radio displays LOC)

02. Hold down the Radio Presets 2 and 3 buttons for six seconds

03. The radio display changes from LOC to a three-digit number. Write this number down. Don’t take forever, fifteen seconds max before the next step.

04. Press the AM/FM button

05. The radio display changes to another three-digit number. Write this number to the right of the first one.

06. You now have a six-digit number, the first three digits are from STEP 03 and the last three digits are form STEP 05

07. Call 1 800 537 5140

08. Press 1 then # (pound). You’ll hear “Invalid Code, try again”

09. Press 139010 then # (pound). You will be asked to enter your four or six digit code followed by * (start)

10. Enter the number from STEP 6 then * (star)

11. Listen to the four-digit number and write it down. It will be repeated twice

12. Turn the ignition ON (The radio displays LOC)

13. Use the MN and HR buttons to enter the code from STEP 11

14. Press the AM/FM button. The radio display changes to SEC Your radio is now “un-locked” and usable. The Theft-Deterrent feature is STILL active! If you want to disable it, use the instruction on page 3-27 in your Y2K Owner’s manual. Use the code from STEP 11 instead of your personal code.

Note: This tip originated from LOTZAHP, Austin TX (credit must be given where credit is due). I verified it on an Y2K C5 with a locked radio - mine.


Not mine I just copied and pasted my stereo took a crap , and a buddy gave me his but was locked , did a little searching and found this online , though it might be usefull to some
Old 10-28-2011, 09:19 AM
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Good sticky material!
Old 10-28-2011, 03:26 PM
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Good to note that this proceedure only works on nbs trucks not 07.5 to current. You have to go to the dealership to unlock those.
Old 10-28-2011, 03:29 PM
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I think it only works on 99-02
Old 10-28-2011, 08:10 PM
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Originally Posted by 1slowz71
I think it only works on 99-02
You are correct, the 03+ trucks have VIN-locked radios last I checked. I think the code business doesn't happen on those any more.
Old 10-28-2011, 09:01 PM
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crap was gonna put a stock one back in mine, so i could use my steering wheel controls again.
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