My radio says locked i was just wondering how to get it unlocked

If you have radio code. You need to plug out your radio or take of battery for 1 min. and then enter the unlock code.

replace IC of car door lock... this is a little black box inside the steering wheel cover

No. The metal of a coat hangar is too flexible. The lockout guys of AAA use two tools: A small bladder, from a blood pressure cuff for example, and a rod about the diameter of your radio antennae. They insert the bladder between the upper door frame where the top of the frame turns down and inflate it enough to get the rod through the weather stripping without tearing it. They then use the rod to trip the unlock button on the power locks.
Then, you're in! :)

You have to go to a chevy dealership to have them unlock the radio. They use a special code that will unlock the radio and then allows you to pick a new code. Hope this helps.

The dealer will need to get the code to unlock the radio. How it works is they retrieve a code from the radio, thenthe code is called in to get another code to unlock the radio.

They will charge you for this. It usually takes about a half an hour.

the dealer is the only one that can unlock a locked radio, they will need to remove the radio, get a "code" off of the sticker on the back of it, and then call the dealers unlock assistance number to get an unlock code. it cant be done with out the dealer. im sorry :(

If you are refering to the Theft Lock code, you must first push the right sequence of radio buttons to enter the un lock mode in the radio's computer. Once the radio's Theft Lock Identifier code is displayed, you then enter the un lock code into the radio. Ususally, this is a dealer operation as they have the online program to retrieve the unlock code after they submit your Theft Lock ID code. I'm wondering how you were able to get a unlock code without the dealer's assistance.

1 have h3 hummer and replaced the radio (ac delco) and is locked,i need to unlock it

You will need to pull the radio to get the code. Call a dealer with the "PU" number and serial number.

As far as I know there is no code on a Nissan factory radio. Check the fuses for the radio.