how to reset check engine light GMC Sierra T1XX (2019-Present)

Learn how to reset the check engine light on GMC Sierra T1XX (2019-Present) with our step-by-step guide. Ensure your vehicle runs smoothly again.

Solution

1. Preparation

• Tools Required: OBD-II scanner.
• Ensure the vehicle is turned off and parked on a flat surface with the parking brake engaged.

2. Connect OBD-II Scanner

• Locate the OBD-II port, typically found under the dashboard near the steering column.
• Plug the OBD-II scanner into the port.

3. Access Diagnostic Menu

• Turn the vehicle ignition to the "ON" position without starting the engine.
• Follow the instructions on the OBD-II scanner to navigate to the diagnostic menu.
• Select the option to read stored DTCs.

4. Clear Codes

• After reviewing the codes, select the option to "Clear Codes" or "Erase Codes" on the scanner.
• Confirm the action when prompted, and wait for the scanner to indicate that the codes have been cleared.

5. Disconnect Scanner

• Once the codes are cleared, safely disconnect the OBD-II scanner from the port.
• Turn off the vehicle’s ignition.

6. Test Drive

• Start the vehicle and observe the dashboard for the check engine light.
• Take the vehicle for a short drive to see if the light reappears.