my GMC Sierra T1XX (2019-Present) key fob not working, how do I reset it

GMC Sierra T1XX (2019-Present)

Error Codes

30 minutes

Time

medium

Difficulty

medium

Severity

3 min read

430 words

Problem Statement

Learn how to reset the key fob for your GMC Sierra T1XX (2019-Present). Step-by-step guide to diagnose and fix key fob issues effectively.

Affected Component

Electrical

Estimated Time

30 minutes

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is in park and the engine is off before performing any procedures.

Symptoms

•Key fob buttons not responding
•Inability to unlock or lock the vehicle remotely
•Engine start function not working
•No indicator lights flashing when buttons are pressed
•Weak or dead battery in the fob

Diagnostic Steps

1
Check the battery level of the key fob and replace it if necessary.
2
Verify that the vehicle is within range (typically within 30 feet) of the key fob.
3
Inspect the key fob for physical damage or water exposure.
4
Attempt to reprogram the key fob using the vehicle's onboard programming method.
5
Use an OBD-II scanner to check for any related error codes in the vehicle's body control module.

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
•New battery (CR2032 or CR2025)

Parts Required

•Key fob battery (if replacement is necessary)

Related Faults

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Diagnostic Steps

1
Check the battery level of the key fob and replace it if necessary.
2
Verify that the vehicle is within range (typically within 30 feet) of the key fob.
3
Inspect the key fob for physical damage or water exposure.
4
Attempt to reprogram the key fob using the vehicle's onboard programming method.
5
Use an OBD-II scanner to check for any related error codes in the vehicle's body control module.

Solution

1. Preparation

Gather necessary tools: a new battery (if required), a flathead screwdriver, and your vehicle's owner's manual.
Ensure the vehicle is parked in a well-ventilated area.

2. Battery Replacement (if needed)

Sub-steps:
1. Open the key fob using the flathead screwdriver to pry it apart at the seam.
2. Remove the old battery and replace it with a new one (usually CR2032 or CR2025, depending on the model).
3. Reassemble the key fob by snapping the two halves back together firmly.

3. Resetting the Key Fob

Sub-steps:
1. Enter the vehicle and close all doors.
2. Insert the key into the ignition and turn it to the "ON" position without starting the engine.
3. Press and hold the "LOCK" and "UNLOCK" buttons on the key fob simultaneously for about 15 seconds.
4. Release both buttons and turn the ignition to the "OFF" position.
5. Test the key fob by pressing any button to ensure it is functioning.