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how to fix the remote start not working on my GMC Sierra T1XX (2019-Present)? - GMC Sierra
Home/Cars/GMC/Sierra/T1XX (2019-Present)/how to fix the remote start not working on my GMC Sierra T1XX (2019-Present)?

how to fix the remote start not working on my GMC Sierra T1XX (2019-Present)?

GMC Sierra T1XX (2019-Present)

Error Codes
1-2 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
531 words

Problem Statement

Learn how to diagnose and fix the remote start issue on your GMC Sierra T1XX (2019-Present). Step-by-step guide with symptoms, diagnostic steps, and solutions.

Affected Component
Electrical
Estimated Time
1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Ensure the vehicle is in a well-ventilated area when testing remote start to avoid exhaust buildup.

Symptoms

  • •Remote start button does not activate the engine
  • •No audible confirmation when attempting to use remote start
  • •Dashboard indicators do not light up upon pressing the remote start button
  • •Key fob battery is functional but remote start feature still does not work
  • •Check engine light may be illuminated

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

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

  • •OBD-II scanner
  • •Multimeter
  • •Flathead screwdriver

Parts Required

  • •CR2032 battery

Additional Information

Affected Component
Electrical
Estimated Time
1-2 hours
Difficulty
medium
Severity
medium
Tools Required
3 items
Parts Required
1 item

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Solution
1. Preparation
  • Gather tools: OBD-II scanner, multimeter, flathead screwdriver, and a new key fob battery if necessary.
  • Ensure the vehicle is parked in a safe area and the engine is off.
2. Key Fob Battery Replacement
  1. Use a flathead screwdriver to gently pry open the key fob casing.
  2. Remove the old battery and replace it with a new CR2032 battery, ensuring the positive side is facing up.
  3. Reassemble the key fob casing securely.
3. Resetting the Remote Start System
  1. Insert the key into the ignition and turn it to the "ON" position (do not start the engine).
  2. Press and hold the remote start button on the key fob for 10 seconds.
  3. Turn the ignition off and remove the key.
  4. Attempt to use the remote start again.
4. Checking and Enabling Remote Start Settings
  1. Access the vehicle's settings through the infotainment system.
  2. Navigate to "Vehicle" settings and then "Remote Start."
  3. Ensure the remote start feature is enabled.
  4. Save any changes and exit the settings menu.
5. Inspecting the Security System
  1. Locate the security module, typically under the dashboard or in the engine compartment.
  2. Check for any loose or damaged wiring connections.
  3. Ensure the module is functioning correctly without any visible damage.