2021 Chevrolet Silverado 1500 Key Fob Programming

Quick reference

Step-by-step on-board programming

Good news! You can program a new key fob for your 2021 Chevrolet Silverado 1500 yourself, provided you have at least one working, programmed key fob. If you've lost all your fobs, you'll need to visit a dealership or a locksmith.

Here's how to program a new remote:

1. Get in your truck: Close all doors and make sure your truck is in Park.
2. Insert working key: Insert your currently programmed key into the ignition.
3. Turn ignition ON: Turn the key to the "ON" position (do not start the engine). You will see the “SERVICE” light illuminate.
4. Turn ignition OFF: Turn the key to the "OFF" position and remove it.
5. Insert the new key (unprogrammed): Insert the new key you want to program into the ignition.
6. Turn ignition ON: Turn the new key to the "ON" position (do not start the engine). Keep it in the "ON" position for approximately 10 seconds. The "SERVICE" light should blink and then turn off, indicating successful programming.
7. Turn ignition OFF: Turn the key to the "OFF" position and remove it.
8. Test the new fob: Test the buttons on your new key fob to ensure it locks, unlocks, and starts the vehicle.

If you have multiple new fobs to program, repeat steps 5-8 for each additional fob.

Battery replacement

The most common reason for a key fob to stop working is a dead battery. The 2021 Chevrolet Silverado 1500 key fob uses a CR2032 coin cell battery.

To replace the battery:

1. Locate the release button: On the side of your key fob, you'll find a small release button. Press it and pull out the emergency key blade.
2. Separate the fob halves: With the emergency key removed, you'll see a slot. Carefully use a small flathead screwdriver or a coin to pry the two halves of the fob apart.
3. Remove the old battery: Gently pry out the old CR2032 battery. Note the orientation of the battery (positive (+) side up).
4. Insert the new battery: Insert a new CR2032 battery with the positive (+) side facing up.
5. Reassemble the fob: Carefully snap the two halves of the key fob back together until you hear a click. Reinsert the emergency key blade.
6. Test the fob: Test the fob to ensure it's working correctly.

Where to buy a replacement fob

When your key fob is lost or damaged, you have a few options for replacement:

• Dealership: Your Chevrolet dealership can provide an OEM replacement fob, cut the key blade (if applicable), and program it for your vehicle. This is usually the most expensive option, often ranging from $200-$400 for the part and programming.
• Locksmith: A professional automotive locksmith often has access to OEM and high-quality aftermarket fobs. They can cut the key and program it for your Silverado, often at a significantly lower cost than the dealership, typically $150-$300.
• Online Retailers (Amazon, eBay, etc.): You can buy aftermarket key fobs online for a fraction of the cost (often $20-$60). However, be cautious to ensure you're purchasing a compatible fob with the correct FCC ID and part number. You'll still need to get the key cut and the fob programmed, which an automotive locksmith can do.

If on-board programming isn't supported

While the 2021 Chevrolet Silverado 1500 generally supports on-board programming for additional fobs when you have one working key, there are situations where you'll need professional assistance:

• All keys lost: If you've lost all your key fobs, the vehicle's immobilizer system will prevent you from programming a new key yourself. In this scenario, a dealership or a locksmith will need to use a specialized scan tool to program a new fob and to ensure the immobilizer transponder (the chip that communicates with your truck to allow it to start) is correctly recognized. Expect costs similar to replacing a fob through a dealership or locksmith as outlined above.
• Transponder key cutting: The 2021 Silverado 1500 uses a transponder key that needs to be precisely cut and programmed to your specific vehicle. Even if you purchase an aftermarket fob online, you'll need a locksmith or dealer to cut the key blade and program the transponder chip if the fob includes an integrated key.

Find a mobile locksmith or shop on Repairius.