1. Turn the ignition ON (The radio should display "LOC")
2. Hold down the Radio Presets 2 and 3 buttons for six seconds
3. The radio display changes from LOC to a three-digit number. Write this number down. You now have fifteen seconds to complete the next step.
4. Press the AM/FM button
5. The radio display changes to another three-digit number. Write this number to the right of the first one.
6. You now have a six-digit number, the first three digits are from STEP 03 and the last three digits are form STEP 05
7. Call 1-800-537-5140
8. Press 1 then # (pound). You'll hear "Invalid Code, try again"
9. Press 139010 or 106010 or 206010 or 202107 then # (pound). You will be asked to enter your four or six digit code followed by *
10. Enter the number from STEP 6 then *
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.
Dealership Codes
Troubleshooting
If you fail to enter the correct code eight times, the radio goes into INOP mode. You have to wait an hour with the ignition on before the radio returns to LOC mode.
Read more: http://wiki.answers.com/Q/Code_to_unlock_radio_for_Chevy_blazer#ixzz26wZKnNnU
SOURCE: 2000 chevy malibu radio unlock help??
are u the original owner of the car ?if so do you still have the books that came with the car? look for the delco radio book !there should be a card in there with a code and instructions! if not the only wasy is to go to the dealer or a radio repair shop to have it unlocked!
SOURCE: radio unlock code
try taking the unit out. there is a sticker on it with a serial number
call your dealer and tell them that you need a code " service department "
they will ask for the serial number on the radio
once you give the serial number they will look it up and give you the code
do not try to put a " random " code this will lock your radio and you will have to unlock it before putting the code in it.
if the screen shows " code " you are fine, just get the code and voile.
if your screen shows " waiting " the radio is locked up and i will assis you on that matter once you get the code.
SOURCE: Need unlock codes for car radio
Call the Saturn Dealer, Just ASK them for it, they will give it to you. *TIP- Don't go over there then they will charge for the service!!!
SOURCE: factory radio for 200 chevy blazer
I have taken all of mine to the dealer, the codes are fixed according to your vin# and there is a sequence to putting that code in. It cost about $25.00 the last one I had done and took about 5 min.
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