my GMC Sierra T1XX (2019-Present) key fob not working, what should I do

GMC Sierra T1XX (2019-Present)

Error Codes

30 minutes

Time

medium

Difficulty

medium

Severity

3 min read

425 words

Problem Statement

Learn how to troubleshoot and fix a non-working key fob for your GMC Sierra T1XX. Step-by-step guide with symptoms, diagnostic steps, and solutions.

Affected Component

Electrical

Estimated Time

30 minutes

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is turned off while working on the key fob.

Symptoms

•Key fob buttons unresponsive
•Vehicle not responding to key fob commands
•Check key fob battery warning on dashboard
•Inability to start the vehicle with key fob
•Physical key not functioning properly in the door lock

Diagnostic Steps

1
Inspect the key fob for physical damage or wear.
2
Replace the battery in the key fob to ensure it has sufficient power.
3
Check if the key fob is within range of the vehicle.
4
Attempt to reprogram the key fob using the vehicle's manual instructions.
5
Scan the vehicle's computer for any error codes related to the keyless entry system.

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

•Small flat-head screwdriver

Parts Required

•Key fob battery (CR2032)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Inspect the key fob for physical damage or wear.
2
Replace the battery in the key fob to ensure it has sufficient power.
3
Check if the key fob is within range of the vehicle.
4
Attempt to reprogram the key fob using the vehicle's manual instructions.
5
Scan the vehicle's computer for any error codes related to the keyless entry system.

Solution

1. Preparation

Gather necessary tools: small flat-head screwdriver, new key fob battery (usually CR2032), and a clean workspace.
Ensure the vehicle is in a safe location with no traffic.

2. Replace Key Fob Battery

Sub-step 1: Use the small flat-head screwdriver to gently pry open the key fob casing at the seam.
Sub-step 2: Remove the old battery carefully, noting the orientation (positive side facing up).
Sub-step 3: Insert the new battery in the same orientation as the old one.
Sub-step 4: Snap the key fob casing back together until it clicks securely.

3. Reprogram Key Fob (if necessary)

Sub-step 1: Enter the vehicle and close all doors.
Sub-step 2: Insert the key into the ignition and turn it to the "On" position (do not start the engine).
Sub-step 3: Press and hold the "Lock" and "Unlock" buttons on the key fob simultaneously for about 15 seconds.
Sub-step 4: Release the buttons, then press the "Lock" button once more to confirm reprogramming.
Sub-step 5: Turn the ignition off and remove the key.