How to Unlock Your Chevy or GMC Radio Without Paying a Dime Chevy and GMC vehicles both feature Theftlock radios which render the stereo inoperable to would-be thieves. The downside of the Theftlock system is that if your battery dies or becomes disconnected, you’ll need to enter the radio code to deactivate the Theftlock system.
You don’t need to special tools or to pay to unlock your Theftlock protected radio. Here are the simple and easy steps to unlock your Chevy or GMC radio. You will need a pen and paper. Be aware that the Theftlock system only allows you 15 seconds to complete each step.