Unlock Radio
#21
I have a 2008 HHR and the radio showed locked. I tried the wikihow instructions but had no luck unlocking it (couldn't get to the time adjustment to enter the code)and my dealer wanted $49 to unlock it. I pulled the fuse for audio, plugged it back in, I have tunes again.
#23
I had to jump the battery in January and once again in March. In April, the "Locked" appeared on the radio. I checked the battery and it was still good, just not fully charged. I charged it fully but still had no luck until yesterday when I decided to pull the fuse.
#24
The contents security system is activated when the battery dies, that is the reason your solution worked.
This is a different case, when you try to install a used radio the numbers need to be negotiated. A "brand new" GM radio made for the car model will do the negotiation automatically. A used radio needs to have data changed. It is a matter of data matching.
12V is a dead battery, the security gets triggered somewhere around 9V.
This is a different case, when you try to install a used radio the numbers need to be negotiated. A "brand new" GM radio made for the car model will do the negotiation automatically. A used radio needs to have data changed. It is a matter of data matching.
12V is a dead battery, the security gets triggered somewhere around 9V.
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