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Old 04-06-2009, 08:07 AM   #1
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Delco radio is locked

Hi everyone,

The factory Delco radio/CD on my '91 has locked up and only displays 0:00. The previous owner put a new battery in just before I bought it and when I went to look at it, the radio was locked up. Is it possible to unlock it, and if so how? I checked the manual and it said something about a six digit code but I don't have a clue what that number is. Is there any way to reset this or am I out of luck?

Thanks,
Jason
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Old 04-06-2009, 10:12 AM   #2
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Re: Delco radio is locked

Chevy dealer might be able to help you out on that. I know there is a back door way to unlock a 4th gen radio so i would assume that you could do it as well with a 3rd gen radio, but i am unaware of the technique to do so. Contact your local GM dealership and they should be able to help you out. Be prepared to get charged an arm and a leg for the unlocking. After that i hope the CD player works...

Best of luck,
Jon
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Old 04-06-2009, 11:29 AM   #3
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Re: Delco radio is locked

or try delcolockcodes.com Theres a small charge but it works out and beats a dealership price.
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Old 05-17-2009, 03:59 PM   #4
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Re: Delco radio is locked

dealer did mine for 10 bucks and gave me the code
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Old 05-17-2009, 05:20 PM   #5
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Re: Delco radio is locked

Jason...........Shoot me a e-mail as I have a link to unlock most pre-03
Delco units. Don't want to post it on a open forum.
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Old 05-21-2009, 12:56 PM   #6
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Re: Delco radio is locked

You have mail.
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Old 05-21-2009, 01:06 PM   #7
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Re: Delco radio is locked

On my 1989 with the steering wheel controls all I have to do is press the "mute" button.
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Old 05-22-2009, 07:34 AM   #8
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Re: Delco radio is locked

UPDATE - I cannot retrieve the codes from my radio to get it unlocked because it only reads 0:00 and the volume bar triangles are at about six. I have tried the button pressing sequence to get the radio code, but the display will not change from 0:00. Am I out of luck or is there something else I can do?

Thanks,
Jason
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Old 05-22-2009, 12:46 PM   #9
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Re: Delco radio is locked

Jason......That procedure I sent should work. Its sort of tricky to do as it
took me a few trys to get it to work.

I guess then its off to the dealer as the last resort
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Old 05-22-2009, 04:59 PM   #10
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Re: Delco radio is locked

I'll try that again after I do the radio disconnect/reconnect. Thanks!
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Old 05-24-2009, 12:50 PM   #11
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Re: Delco radio is locked

Jason.......Does your radio say LOC ?????????
OR when your going thru the unlock procedure I sent and when
you go thru the procedure it then shows 000 on the display?

When it shows the 000 this is when you punch in the "code" number.

The code you must punch in is in the instructions I sent.
The radio itself does NOT give you the codes!
The code just unlocks the radio..................
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Old 05-25-2009, 06:44 PM   #12
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Re: Delco radio is locked

Quote:
Originally Posted by sonjaab View Post
Jason.......Does your radio say LOC ?????????
OR when your going thru the unlock procedure I sent and when
you go thru the procedure it then shows 000 on the display?

When it shows the 000 this is when you punch in the "code" number.

The code you must punch in is in the instructions I sent.
The radio itself does NOT give you the codes!
The code just unlocks the radio..................
That has been my issue the whole time...the display has NEVER said "LOC" as long as I have had the car, it only says 0:00 with the volume triangles at 5 or 6 bars and will not change regardless of which buttons are pressed or for how long. It was that way when I bought it and the guy said the radio worked until a couple days before when he changed the battery. Is there a chance it is not locked, just dead?
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Old 05-26-2009, 10:09 AM   #13
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Re: Delco radio is locked

Jason.....Check your mail !
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Old 11-09-2009, 04:15 PM   #14
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Re: Delco radio is locked

Quote:
Originally Posted by sonjaab View Post
Jason...........Shoot me a e-mail as I have a link to unlock most pre-03
Delco units. Don't want to post it on a open forum.
I need to unlock a delco radio in a 1999 pontiac bonneville.
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Old 11-13-2009, 10:52 AM   #15
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Re: Delco radio is locked

i need to unlock the radio in my 89 gta code says loc . can someone send me the sequence
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1988, 2003, 2005, 4th, chevy, corvette, delco, delcolockcodes, gen, locked, radio, reset, resetting, unlock, unlocking
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