2019 Gmc Sierra Key Fob Battery Replacement

Is your 2019 GMC Sierra key fob acting up? Perhaps it's not unlocking your doors from a distance, or maybe the remote start isn't working. A common culprit is a low or dead battery. Luckily, replacing the battery in your 2019 GMC Sierra key fob is a simple process you can do yourself, saving you time and money compared to a trip to the dealership. This guide provides clear, step-by-step instructions to help you get your key fob working like new again.

Identifying the Need for a Battery Replacement

Before diving into the replacement process, it's important to confirm that a low battery is indeed the problem. Here are some telltale signs indicating your 2019 GMC Sierra key fob battery needs replacing:

Reduced Range: You need to be much closer to your vehicle for the key fob to function.
Intermittent Functionality: Sometimes the buttons work, and sometimes they don't.
Dashboard Warning: Your Sierra's dashboard may display a "Low Key Fob Battery" warning message.
No Response: The key fob completely fails to unlock the doors, start the vehicle (if equipped with remote start), or sound the panic alarm.

If you experience any of these symptoms, proceed with replacing the battery. It's a quick and affordable solution that often resolves these issues.

Tools and Materials Needed

You won't need many tools for this task. Here's what you'll need to replace the battery in your 2019 GMC Sierra key fob:

New Battery: A CR2032 button cell battery. You can find these at most drugstores, supermarkets, or online retailers. Ensure you purchase a high-quality battery for optimal performance and longevity.
Small Flathead Screwdriver (or similar tool): This will be used to gently pry open the key fob. A small plastic pry tool can also be used to minimize the risk of scratches.
Soft Cloth (optional): To protect the key fob casing from scratches during the opening process.

Step-by-Step Battery Replacement Guide

Follow these steps carefully to safely and effectively replace the battery in your 2019 GMC Sierra key fob:

Step 1: Locate the Emergency Key Release

On the back of your key fob, you'll find a small release button or switch. This allows you to remove the emergency key. Locate this release mechanism and press or slide it as indicated. Simultaneously, pull out the emergency key.

Step 2: Access the Key Fob Opening

With the emergency key removed, you'll see a slot or indentation where the key was housed. This is where you'll insert your flathead screwdriver (or pry tool) to open the key fob.

Step 3: Gently Pry Open the Key Fob

Carefully insert the tip of your flathead screwdriver into the slot and gently twist. The key fob casing should begin to separate. Be careful not to apply too much force, as you could damage the casing. Work your way around the seam, gently prying until the two halves of the key fob separate completely.

Step 4: Remove the Old Battery

Once the key fob is open, you'll see the battery. The battery is typically held in place by small clips or a retaining bracket. Carefully note the orientation of the battery (positive (+) side up or down). This is crucial for installing the new battery correctly.

Use your fingernail or the tip of the flathead screwdriver to gently dislodge the old battery from its housing. Be mindful not to damage any of the internal components.

Step 5: Install the New Battery

Take the new CR2032 battery and install it into the key fob, ensuring the correct polarity (positive (+) side facing the correct direction) as noted in Step 4. The battery should snap securely into place.

Step 6: Reassemble the Key Fob

Carefully align the two halves of the key fob casing and press them together until they snap securely shut. Ensure that all the seams are closed and that the casing is flush.

Step 7: Reinsert the Emergency Key

Slide the emergency key back into its housing on the key fob until it clicks into place.

Testing the Key Fob

After replacing the battery, test the key fob to ensure it's working correctly. Try the following:

Unlock and lock the doors: Confirm the key fob can remotely lock and unlock your vehicle's doors.
Remote Start (if equipped): Test the remote start functionality to ensure the vehicle starts remotely.
Panic Alarm: Press the panic button to confirm the alarm sounds.

If any of these functions are still not working, double-check the battery polarity and ensure the battery is securely seated in its housing. If the problem persists, consider consulting a qualified automotive technician.

Tips and Considerations

Battery Polarity is Crucial: Installing the battery with the wrong polarity will prevent the key fob from working and may even damage it.
Avoid Using Excessive Force: When prying open the key fob, use gentle pressure to avoid damaging the plastic casing.
Protect the Internal Components: Be careful not to touch or damage any of the internal components of the key fob.
Keep Spare Batteries Handy: It's always a good idea to keep spare CR2032 batteries on hand so you're prepared for future battery replacements.
Recycle Old Batteries: Dispose of used batteries properly at designated recycling centers to protect the environment.

Conclusion

Replacing the battery in your 2019 GMC Sierra key fob is a straightforward task that can save you time and money. By following these simple steps, you can quickly and easily restore your key fob to its optimal working condition. Remember to always double-check the battery polarity and use caution when prying open the key fob to avoid damage. With a fresh battery, your key fob will be ready to provide you with convenient and reliable access to your vehicle.