How do I fix the faulty key fob on a 2021 Chevrolet Silverado 1500 T1XX?

Chevrolet Silverado 1500 T1XX (2019-2023)

Error Codes

1 hour

Time

medium

Difficulty

medium

Severity

3 min read

577 words

Problem Statement

Learn how to diagnose and fix a faulty key fob on your 2021 Chevrolet Silverado 1500 T1XX with step-by-step instructions.

Affected Component

key fob

Estimated Time

1 hour

Symptoms

•Remote Keyless Entry (RKE) Not Working
•Intermittent Functionality
•Battery Warning Indicator

Diagnostic Steps

1
Visual Inspection
2
Battery Check
3
Reprogramming the Key Fob
4
Key Fob Signal Test

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•Flathead screwdriver or coin
•CR2032 battery
•Multimeter
•OBD-II Scanner
•Key fob programming tool

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Solution

Fixing a Faulty Key Fob on a 2021 Chevrolet Silverado 1500 T1XX

Tools Required

Flathead screwdriver or coin (for battery replacement)
CR2032 battery (common key fob battery)
Multimeter (for voltage testing)
OBD-II Scanner (optional, for advanced diagnostics)
Key fob programming tool (if available)

Repair Instructions

Step 1: Battery Replacement

Locate the seam on the key fob and use a flathead screwdriver or coin to gently pry the two halves apart.
Remove the old battery from the battery compartment.
Insert a new CR2032 battery, ensuring that the positive (+) side is facing up.
Snap the two halves of the key fob back together.

Step 2: Reprogramming the Key Fob

Enter the Vehicle: Sit in the driver’s seat with all doors closed.
Insert the Key: Insert the key into the ignition without starting the vehicle.
Turn the Ignition On/Off: Perform the following steps within 30 seconds:
- Turn the ignition to the "On" position (do not start).
- Turn the ignition to the "Off" position.
- Repeat this step 3 times (On, Off, On, Off, On, Off).
Door Lock Confirmation: After the third "On" position, leave the ignition in the "On" position. The door locks should cycle automatically, indicating the vehicle is in programming mode.
Press a Button on the Key Fob: Press any button on the key fob you want to program. The locks will cycle again, confirming successful programming.
Repeat if Necessary: If you have additional key fobs, repeat the previous step for each one.
Exit Programming Mode: Turn the ignition to "Off" to exit programming mode. The locks should cycle once more.

Step 3: Test the Key Fob

Stand outside the vehicle and test the key fob buttons to ensure the locks respond correctly.
Attempt to start the vehicle with the key fob. If the vehicle starts, the key fob is functioning properly.

Additional Troubleshooting

If the key fob still does not work after replacing the battery and reprogramming, the issue may lie within the vehicle's receiver module or the key fob itself may be defective.
Using an OBD-II Scanner: If equipped, connect an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to the keyless entry system.

Conclusion

If, after following these steps, the key fob is still not functioning, consider contacting a certified Chevrolet dealer or a professional automotive locksmith for further assistance or to obtain a replacement key fob.