How do you unlock the radio on a 2002 buick rendezvous?

To unlock the radio on a 2002 Buick Rendezvous, you typically need the radio code, which is usually found in the owner's manual or on a card in the glove compartment. If you don’t have the code, you may need to contact a Buick dealer with your Vehicle Identification Number (VIN) to obtain it. Once you have the code, turn on the radio, press the "AM/FM" button, and then enter the code using the preset buttons. After entering the code correctly, the radio should unlock and resume normal operation.