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 m…

 
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.

Check the Tailgate Fuses and Electrical Connections

• 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.

Review the Owner’s Manual

• 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.

Reset the Tailgate System

• 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.

Consult a Professional

• 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.