What steps should be taken if the 2018 GMC Sierra 1500’s MultiPro Tailgate is not functioning correctly?

 
Inspect the Tailgate
 

• Examine the tailgate for any visible damage or obstruction that may be preventing it from functioning correctly.
• Ensure there are no foreign objects jamming the hinges or latch mechanisms.
• Check for signs of wear or corrosion on the tailgate components.

• Locate the fuse box in your 2018 GMC Sierra 1500 and find the fuse related to the tailgate system.
• Inspect the fuse to see if it has blown, and replace it if necessary.
• Check the electrical connections of the tailgate system to ensure they are secure and free of corrosion.

• Refer to your vehicle’s owner’s manual for specific troubleshooting steps and guidelines related to the MultiPro Tailgate.
• Ensure that all steps to operate and troubleshoot the tailgate are properly followed according to the manual.

• Disconnect the negative battery terminal for a few minutes and then reconnect it to reset the electronic tailgate system.
• After reconnecting, try operating the tailgate again to see if the issue is resolved.

• If the tailgate still does not function correctly, schedule an appointment with a certified GMC technician for a detailed inspection and repair.
• Provide the technician with details of the issues and any troubleshooting steps already taken, so they can better diagnose the problem.