How to Test GMC Key Fob after Battery Replacement: Complete Checklist

Ever found yourself locked out of your car because your GMC key fob battery died at the worst possible moment? Frustrating, right? But fret not, as we’ve got your back! Imagine the convenience of being able to easily replace the battery in your GMC key fob within minutes, without any hassle. That’s the power of knowing this simple DIY trick!

Step 1: Gather Necessary Tools

Before changing the battery in your GMC key fob, make sure you have the following tools ready:

  • Small flathead screwdriver or prying tool
  • Replacement CR2032 battery
  • Clean cloth or tissue

With these tools on hand, you’ll be all set to tackle the battery replacement process swiftly and hassle-free.

Step 2: Open the GMC Key Fob

To access the battery, you’ll need to open the GMC key fob. Here’s how:

  • Look for the seam on the side of the key fob.
  • Insert a small flathead screwdriver into the seam.
  • Gently twist the screwdriver to pry open the key fob.

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Remember, gentle pressure is key to avoid damaging the fob.

Step 3: Replace the Battery

So, now that you have successfully opened the key fob, it’s time to replace the battery. Here’s what you need to do:

  • Identify the battery type: Check the type of battery your GMC key fob uses. It’s typically a CR2032 battery.
  • Remove the old battery: Take out the old battery carefully, noting its position. You can use a small flathead screwdriver for this step.
  • Insert the new battery: Place the new CR2032 battery in the same position as the old one. Make sure it’s facing the right way.
  • Close the key fob: Gently press the two halves of the key fob together until you hear a click. Ensure it’s securely closed.
  • Test the key fob: Check if the key fob is working properly by using it to lock and unlock your vehicle.
  • Reprogram if needed: In some cases, you may need to reprogram the key fob to sync it with your car’s system. Refer to your vehicle’s manual for instructions.

Remember, battery replacement is a simple and cost-effective way to ensure your GMC key fob continues to work smoothly.

Task Details
Battery Type CR2032
Removal Method Gentle prying
Replacement Right position
Closure Technique Secure click
Testing Lock/unlock test

Step 4: Put the Key Fob Back Together

  • Securely place the back cover over the compartment where the battery sits.
  • Ensure the cover snaps into place by applying a bit of pressure.
  • Make sure all the buttons are aligned properly before pressing them.
  • Test each button’s functionality to confirm the key fob works after the battery replacement.
    Be gentle yet firm when closing the key fob to prevent any damage.
  • Avoid leaving any gaps when putting the key fob back together to maintain its water resistance.

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Key Fact
Next Step Reprogram the key fob if needed

Step 5: Test the Key Fob

Now that you’ve replaced the battery and put the key fob back together, it’s time to test if everything is working as it should. Here are the steps to test your GMC key fob:

  • Check each button: Press every button on the key fob to ensure they are all functioning correctly.
  • Distance test: Test the range by trying to unlock your vehicle from different distances.
  • Key fob response: Make sure the responses from the key fob are prompt and consistent.
  • Reprogramming verification: If you had to reprogram the key fob after changing the battery, confirm that the programming was successful by testing the key fob.

Remember, testing the key fob is crucial to ensure that it works correctly after the battery replacement. Don’t skip this step and double-check everything before considering the task complete.

Key Fob Testing Tips:
Check every button
Test the range
Confirm prompt responses
Verify reprogramming


That’s it! Testing your key fob after changing the battery is essential to make sure everything is functioning as it should. Remember to check all the buttons, test the range, and ensure the key fob responds promptly. Reprogramming may be necessary, so double-check for a successful reprogramming if needed. Following these simple steps will help guarantee that your GMC key fob is in top working condition after replacing the battery. Happy key fob testing!

Frequently Asked Questions

How important is it to test the key fob after replacing the battery?

Testing the key fob after battery replacement is crucial to ensure proper functionality. It verifies that the new battery is working, the buttons respond accurately, and the range is adequate.

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What should I check when testing the key fob buttons?

When testing the key fob buttons, ensure that each button works correctly and triggers the intended response from the vehicle.

How do I test the range of the key fob?

Testing the key fob range involves trying out the key fob from various distances to ensure it can effectively communicate with the car.

Why is prompt response from the key fob important?

Prompt responses from the key fob are essential for convenience and security purposes, ensuring quick and reliable access to the vehicle.

Do I need to reprogram the key fob after replacing the battery?

In some cases, reprogramming the key fob may be necessary after replacing the battery to sync it with the vehicle’s system.

What tips can help ensure successful key fob testing?

To ensure successful key fob testing, refer to the article’s checklist for key fob testing tips to cover all essential aspects thoroughly.

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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