Car TipsHow To

How to Unlock GM Radio in a GMC or Chevy Car

If you have a GMC or Chevy car and you need to unlock your radio, you may find it challenging. The radio is designed with an anti-theft feature that prevents unauthorized use. However, unlocking your radio is a simple process that you can do on your own with the right information and tools. In this article, we will guide you through the steps to unlock your GM radio.

Step 1: Get Your Radio Serial Number

The first step to unlocking your GM radio is to obtain your radio serial number. To get this number, you will need to remove the radio from your car. You can do this by using a radio removal tool, which you can purchase from an auto parts store or online. Once you have removed the radio, you can find the serial number on a sticker on the back or side of the radio. Make sure to write down the number as you will need it later.

Step 2: Contact a GM Dealer

After you have obtained your radio serial number, the next step is to contact a GM dealer. They will be able to provide you with a unique unlock code for your radio. To do this, you will need to provide them with your radio serial number, vehicle identification number (VIN), and proof of ownership.

Step 3: Enter the Unlock Code

Once you have received the unlock code from the GM dealer, you can enter it into your radio to unlock it. To enter the code, turn on your radio and wait for the “Locked” message to appear. Then, use the numbered buttons on your radio to enter the unlock code. Make sure to enter the code correctly, as too many incorrect attempts can permanently lock your radio.

Step 4: Test Your Radio

After entering the unlock code, your radio should now be unlocked and ready to use. Test it by turning it on and checking that you can access all the features and stations.

What is the code for GM radio?

The code for a GM radio is a unique four-digit number that is used to unlock the radio’s anti-theft feature. This code is specific to each radio and is obtained from a GM dealer by providing the radio’s serial number, vehicle identification number (VIN), and proof of ownership.

How do I reset my GM radio factory?

To reset a GM radio to its factory settings, you can try the following steps:

  1. Turn off the radio and ignition.
  2. Press and hold the preset buttons 1 and 4 (or 2 and 3) at the same time.
  3. Turn on the ignition and radio while still holding the buttons.
  4. Release the buttons after “000” appears on the screen.
  5. Press the buttons again in the following order: 1, 2, 3, 4.
  6. The radio should now be reset to its factory settings.

How much does it cost to unlock a GM radio?

The cost to unlock a GM radio can vary depending on the dealership and location. On average, it can cost between $50 to $100. However, some dealerships may offer the service for free or at a discounted price if you purchased the vehicle from them or have a good relationship with the dealership. It’s always best to call ahead and inquire about the cost before bringing your vehicle in for service.


Unlocking your GM radio is a simple process that can be done with just a few steps. By obtaining your radio serial number, contacting a GM dealer, and entering the unlock code correctly, you can have your radio up and running in no time. Remember to keep your unlock code safe in case you need to unlock your radio again in the future.

Rachael McAdams

I'm Rachael, CEO of AutoGeeX, bring unrivaled expertise and passion to the automotive industry. With extensive knowledge and a deep understanding of cars, she shares captivating tales, invaluable insights, and practical tips with readers. As an active presence in the car community, Rachael ignites excitement, revolutionizing the automotive landscape with AutoGeeX's pursuit of perfection.

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