How to Replace the Battery in Your 2020 GMC Sierra Key Fob: Test for Flawless Functionality

Ever found yourself locked out of your 2020 GMC Sierra because of a dead key fob battery? Frustrating, right? But fret not, as we’ve got your back! In this article, we’ll walk you through the simple steps to replace the battery in your GMC Sierra key fob.

Imagine being able to effortlessly unlock your truck with just a click of a button, without any hiccups. That’s the convenience a properly functioning key fob provides. By learning how to change the battery yourself, you’ll save time and money, ensuring your key fob is always ready when you need it.

Gather the Necessary Tools

To change the battery in your 2020 GMC Sierra key fob, you’ll need a few essential tools. Here’s what you’ll need to get started:

  • New battery: Make sure to have the correct replacement battery for your GMC Sierra key fob. Check your owner’s manual for the specific battery type required.
  • Small flat-head screwdriver: You’ll need this tool to open the key fob casing and access the battery compartment.
  • Tweezers or small pliers: These will come in handy for safely removing the old battery from the key fob.
  • Clean cloth: Keep a clean cloth nearby to handle the key fob parts and avoid smudges or dirt.
  • Work area: Find a well-lit and stable surface to work on to prevent losing any small components during the battery replacement process.

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With these tools ready, you’ll be all set to replace the battery in your GMC Sierra key fob efficiently.

Locate the Battery Compartment

When it’s time to change the battery on your 2020 GMC Sierra key fob, the first step is to locate the battery compartment. Here’s how to do it:

  • Look for a small notch or button on the back of the key fob. This is usually where the compartment is located.
  • Press the button or slide the notch to open the battery cover. It’s designed to be easily accessible for battery replacement.
  • Once the cover is open, you’ll see the battery nestled inside the compartment.

Remember, locating the battery compartment is the crucial first step in the process of replacing the battery in your key fob.

Remove the Old Battery

  • Locate the battery compartment on the back of the key fob.
  • Use a small tool like a flathead screwdriver to gently pry open the cover.
  • Once the cover is off, carefully remove the old battery.
Step Description
1. Locate the battery compartment.
2. Use a tool to open the cover.
3. Remove the old battery.

Insert the New Battery

When inserting the new battery into your 2020 GMC Sierra key fob, make sure you place it in the correct orientation following these steps:

  • Step 1: Take the new battery and carefully insert it into the compartment.
  • Step 2: Ensure the battery is securely in place.
  • Step 3: Close the cover of the battery compartment by pressing down until it clicks into position.

Remember, the type of battery required for your GMC Sierra key fob may vary, so always check your vehicle’s user manual for the correct specifications.

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Important Facts Data
Recommended Battery Type CR2032
Battery Replacement Time Every 1-2 years
Battery Orientation Ensure correct polarity

Test the Key Fob

When you have replaced the battery in your 2020 GMC Sierra key fob, it’s important to test if it’s working properly before you reassemble it. Here’s how you can do it:

  • Press Buttons: Test all the buttons on the key fob to make sure they respond as they should. Don’t forget to check both the lock and unlock buttons, as well as the trunk release if your key fob has one.
  • Distance Test: Try using the key fob from different distances to see if it functions reliably. Walk a few steps away from your vehicle and test the key fob to ensure it works even at a distance.
  • Battery Connection: If the key fob is not working after battery replacement, make sure the new battery is properly inserted. Sometimes, a loose connection can cause issues, so double-check the battery connection.

Remember, testing the key fob after battery replacement ensures that you won’t be left stranded due to a faulty key fob. If you encounter any issues during testing, you may need to revisit the battery replacement steps to ensure everything is correctly in place.


That’s it! You’ve successfully replaced the battery in your 2020 GMC Sierra key fob. Remember to test all the buttons, check the fob’s response, and ensure a secure battery connection. Testing is key to avoiding any potential issues, so if you encounter any problems, just revisit the battery replacement steps. Enjoy using your refreshed key fob hassle-free!

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Frequently Asked Questions

How do I test the functionality of my GMC Sierra key fob after replacing the battery?

To test your GMC Sierra key fob after a battery replacement:

  1. Press all the buttons to check responsiveness.
  2. Test the key fob from various distances.
  3. Ensure the battery connection is secure.
  4. If issues arise during testing, revisit the battery replacement steps.

Why is testing the key fob after a battery replacement important?

Testing the key fob post-battery replacement is crucial to identify any potential issues early on. It ensures that the key fob functions correctly, all buttons work, and the battery connection is secure. Regular testing helps prevent unexpected problems with the key fob’s performance.

Battery industry professional with 5+ years of experience. Bachelor of Science in Electrical Engineering from Georgia Tech. Specializes in power systems and renewable energy.

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