Bypassing Theftlock on your car stereo

I replaced the battery on my Malibu, forgetting about the Theftlock feature on my stereo. After I put in the new battery, I realized that I didn't know my code. It's pretty bad since this has happed to me before, and I had to figure out how to bypass it again.

Fortunately, Google makes it easy to find instructions:

  1. Press and hold presets 2 & 3 for about 10 seconds until the first 3 digits of the display code are displayed.
  2. Write the numbers down.
  3. Press the AM/FM button, write down the next 3 numbers.
  4. Call 1-800-537-5140, when asked, enter 620529, press the # button and enter the 6 digit code from the radio, you will get an unlock code, write it down.
  5. Go back to the car, press the HR button and set the first 2 numbers, then press minute button and set the next two last numbers, press AM/FM button, SEC should be displayed, turn on radio.
  6. To remove customers code, repeat step 5. you should see --- on radio face, the code is now out of the radio.

I did this, and I got 502 and 509. The phone call gave me back the code of 0640. If you ever want to steal the POS factory CD player out of my car, now you know the code.

If you wander on this post too far in the future, the dealer code may have changed. You'll have to find a new one with Google.

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posted @ Sunday, September 16, 2007 6:21 PM

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# re: Bypassing Theftlock on your car stereo

Left by Brandon at 10/6/2007 8:22 PM
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I have a 2005 monte carlo which came with a cassette player stock, so i bought a stock cd player off ebay that was pulled from a wreck i tried holding down those buttons am i doing something wrong?
plz help

# re: Bypassing Theftlock on your car stereo

Left by SuperJason at 10/7/2007 8:51 AM
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I don't know, I just found the instructions through Google.

# re: Bypassing Theftlock on your car stereo

Left by steve kershaw at 10/28/2007 3:50 PM
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Jason,
My radio has been locked for over a month, I was able to get the codes from another website that wanted 4.99 to give me the code after getting the numbers.
I happened across your blog, tried what you had and it worked and my radio is now unlocked.

THANK YOU JASON!!!!!!!

# re: Bypassing Theftlock on your car stereo

Left by Tawny at 7/10/2008 12:32 PM
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I hope this works! I have a 2000 chevy Malibu That I have had for YEARS! this happened to me once before when I had the car worked on. i went to the local Chevy dealer and they fixed it in 2 minutes and did not charge me. I asked them now, but they want $60 plus tax!!!!
what a rip off!!

Thanks and keep your fingers crossed for me!
TAwny

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