how to fix the tailgate latch on GMC Sierra T1XX (2019-Present)?

Learn how to diagnose and fix the tailgate latch issue on GMC Sierra T1XX (2019-Present). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the ignition is off.
• Disconnect the vehicle battery to prevent electrical shorts.

2. Remove the Tailgate Handle

• Use a socket set to remove screws or bolts securing the tailgate handle.
• Carefully detach the handle from the tailgate, ensuring not to damage any wiring.

3. Access the Latch Assembly

• Remove the panel covering the latch assembly inside the tailgate. This may involve unscrewing or unclipping the panel.
• Take care not to break any clips during removal.

4. Inspect and Replace the Latch

• Inspect the latch assembly for wear or damage. If damaged, remove the latch assembly by unscrewing it from its mounting points.
• Install the new latch assembly by lining it up with the mounting points and securing it with screws or bolts. Torque to the manufacturer's specification (typically around 7-10 ft-lbs).

5. Reassemble the Tailgate Handle and Panel

• Reattach the tailgate handle and secure it with screws or bolts.
• Reinstall the panel covering the latch assembly, ensuring all clips and screws are properly secured.

6. Reconnect Battery and Test

• Reconnect the battery and test the tailgate by closing it and ensuring the latch engages properly.
• Ensure the tailgate opens and closes smoothly without obstruction.