Radio locked, code needed

Did you check fuses and relays first? Diagnose first, then repair. A new motor comes after you connect 12 volts to the old one and see if it works.

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Fuse Box Diagram Chevrolet Monte Carlo (2000-2005)

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2000, 2001, 2002, 2003 - Here you will find fuse box diagrams of Chevrolet Monte Carlo 2000, 2001, 2002, 2003, 2004 and 2005, get information about the ...

Some of these cars have a separate amplifier.

you may have a card in owners manual that has radio code, otherwise you need the serial number off the back of the radio to give to dealer

you need a scanner to clear the codes. make sure you have them written down first. Many parts stores offer free scans (autozone, Advance, etc.)

you need the unlock code from the manufacturer. I had a radio lock up but the company had me send it to them for them to unlock. i had to prove that i bought it and it was not stolen.

It is pretty easy, there is not much labor involved if it has anti-lock brakes in the rear you will also have to un-plug the wire harness attached to hubs.

try unhooking the cars battery for fifteen minutes then hooking it back up. they probably did this at the shop when they were finished to clear the engine trouble codes. my car radio recently acted up all i had to do was unhook the battery then it worked like new.

If you don't know the unlock code, the only solution is to take it to the dealer or replace it.
Sorry
Guy

is the battery good if it is shorted out it will do this or if the charging system is not working

It is your amplifier.You can buy a $12.00 ,Amp Bypass Turobowire Harness.{12 VOLT-TRAVEL,