Unlock Radio

I searched around and found two possible options over at this forum: http://www.saturnfans.com/forums/archive/index.php/t-90513.html

I have not tried either of these since I do not currently own a Saturn.

Method 1:

The forum thread (below) describes the process for GM vehicles, however Saturn and Geo use 4 digit radio codes instead of 6 digit codes like the rest of GM so the process is different than what you see spread all over the internet:
http://forums.carreview.com/showthread.php?t=1839&page=4

***Read all steps before attempting. You are on a time limit when entering codes, so knowing what to do in advance will save alot of frustration***

1. To begin, if your radio is displays LOC, then proceed to step 2. If your radio says INOP, then turn your ignition to the RUN position, and turn the radio ON. You must leave it like this for a minimum of 1 hour (not 59 minutes) to clear the INOP message. I would wait 1 1/2 hours just in case doing it too early causes the timer to start over.

2.) Turn your ignition to RUN (if not already), and your radio to OFF. Press and hold preset buttons 2 and 3 for around 5-10 seconds to obtain a scrambled version of your radio's original factory set code.

3.) Call 800-537-5140 and ignore whatever you are promted to do (something about different dealer brands Chevy, Pontiac, Saturn,etc.), and type the number 202108 into your phone and then press the # button.

4.) Input your radio's 4 digit code into your phone when prompted, then press the * button (NOT pound symbol like above step) and be ready with a pen and paper to write down the unscrambled code. Keep this code somewhere you WILL NOT lose it. I wrote mine in the notes section of the owners manual.

5.) Once you have the code written down, press and hold 5 and 6 on your radio's preset buttons for 5-10 seconds.

6.) Then press the seek down button once to start the entry process.

7.) Using the following key, repeatedly press the buttons to set your code:
seek down = first digit
seek up = second digit
tune down = third digit
tune up = fourth digit

NOTE: If your stereo's buttons have arrows facing left and right and not up and down, then for the purposes of this process, left represents down, and right represents up.

8.) Once you have the code entered, press AM/FM to set it.

The Radio should now be unlocked.

Note that the code given in step 3 belongs to a Pontiac dealer out there somewhere (judging by the number 2 at the beginning of the code if you listen to the voice prompts on the 800 number), so if they go out of business or wise up to their code being used, this method may eventually not work. However, the post I dug it up from is over a year old, so there is hope that it will last a while.

Method 2:

If your radio is locked, you can call or better yet go by your dealer and have him spend 3 minutes calling in your VIN number and getting a reset code from the factory. Some dealers want to charge you $50 for this service.

When you get the four digit code:
Turn your key to "Run", not accessory. Also, leave the radio "ON".
Leave your car in this state for at least an hour.
When you come back, it should show " -- -- -- --".
Using the left and ride side of "seek", set digits one and two of the code the service guy gave you. Using the "tune", set digits three and four of the same code.
Press am/fm.
Voila!! Did 87.5 FM come on? You're good to go.

If you mess it up, you have two more tries. If you still mess it up, just leave the key in "Run" and the radio on for another hour and try again.

 

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Licenses & Certifications: Microsoft, Cisco, VMware, Novell, FCC RF & Amateur Radio licensed.