00 impala rds radio unlock?

hey there guys, i just purchased a factory radio from ebay but i cannot get it to work. The word "LOCKED" just shows in the display and i cannot do anything. Is there anything i can do? Thanks in advance.

The factory radio communicates with the BCM. Each time the car is turned on, it checks to see that the VIN number matches, and if is doesn't, it LOCKs. I believe a dealer can reset it, but I'm not sure.

Yes, a dealer can reset it. I did the same thing, upgraded my factory AM/FM/cassette to the one that includes CD. Got mine off ebay. The dealer started to give me a hard time about charging me like 40 bucks to do it. I said what, for a tech to hook up the computer under the dash and punch a few buttons, for less than 5 minutes of work you want to charge me what? He gave in and a tech took the computer (code reader type) to the parking lot, plugged into OBDII jack, punched a few buttons and I was good to go. No charge. All with the wife and 2 kids in the car, too.

What they are doing is "marrying" the VIN to the radio memory, so that when the BCM performs the security checks on startup, it recognizes the radio as belonging to the car.

If you go in there knowing what you are talking about, they quickly loose interest in trying to scare you about it being some fancy, elaborate thing. Same with most any service. If you know what you are talking about, they loose the advantage and they know it quickly. If they insist on charging you, tell them you will give them 5 minutes worth of labor, or (if labor is $70/hr)$5.83. Just kidding. Most places have a minimum labor charge. But don't let them charge you more than the minimum!
Ogre