anyone know how to 'unloc' GM radio?

[Memphis]

Basic CD player in a 2000 Cavalier took a dump. Went to Als bought a replacement. Put it in, it is 'locked'. Cant find a procedure to manually enter a code to unlock the radio. Is it a scan tool only unlock? Calling the dealer wont help because we dont have the vin of the original car it came from. Any suggestions?

[Korndogg]

This used to work. Don't know if it still does. But it gives you a new code to use.

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!

[03Seville]

Here's a few more dealership codes incase the 139010 no longer works


* 106010
* 206010
* 202107

[Memphis]

I will try them both and let you know!

[Memphis]

he says the hour and minute button dont do anything, nor does the 2 3 buttons. sounds like we're sol huh?

[Korndogg]

yeah that could pose a problem

[brotherbenn83]

That's because that procedure is for OLD theftlock radios. His radio probably looks more like this:

http://www.foxautopartsonline.com/photos/showimage.php?img=photo1_535887.JPG&w=490

In which case you will need a tech 2 to unlock the radio.

[03Seville]

That's because that procedure is for OLD theftlock radios. His radio probably looks more like this:

http://www.foxautopartsonline.com/photos/showimage.php?img=photo1_535887.JPG&w=490

In which case you will need a tech 2 to unlock the radio.


yeah I couldn't remember if they started theftlock2 in 2000 or 2001, but yeah if those didn't work than it needs to be programmed to the VIN