Unlock GM, Cadillac & Hummer Theftlock Radio Codes | Easy DIY Guide

Is your GM, Cadillac, or Hummer radio locked after a battery change or disconnect? Stuck on “LOC” or “THEFTLOCK”? Don’t worry — in this video, I’ll show you exactly how to unlock your Theftlock radio using a simple DIY method. You’ll learn how to: 🔒 Retrieve the radio’s security (unlock) code 🔧 Enter the code using factory buttons 📻 Restore your sound system without going to the dealer This method works for many GM vehicles, including: ✔️ Cadillac Escalade, CTS, DeVille ✔️ Chevy Silverado, Tahoe, Impala ✔️ Hummer H2, H3 ✔️ GMC Sierra, Yukon, and more Don’t pay the dealer — do it yourself in just a few minutes! 🎯 If this guide helps you unlock your radio, be sure to Subscribe for more GM tech tips, DIY repairs, and troubleshooting videos. Got a question or need help with your specific model? Drop it in the comments — I’m here to help you get your music back!