Main points
- Locate the handle on the inside of the tailgate, the one you use to open and close it.
- Reattach the handle to the tailgate by aligning it with the holes and securing it with the screws you removed earlier.
- Common reasons include replacing the tailgate, installing a bed liner, accessing the truck bed for cleaning or repairs, or performing modifications such as adding a tailgate step.
Are you looking for a way to access the bed of your 2018 GMC Sierra with ease? Perhaps you need to replace the tailgate, install a bed liner, or simply want to clean the truck bed thoroughly. Whatever your reason, removing the tailgate is a relatively straightforward process. This guide will walk you through each step, ensuring you can tackle this task with confidence.
Gather Your Tools
Before you begin, make sure you have the following tools on hand:
- 10mm socket: This is the most common size used for the tailgate bolts.
- Socket wrench or ratchet: To tighten and loosen the bolts.
- Extension bar: To reach the bolts more easily.
- Safety glasses: To protect your eyes from any debris.
- Gloves: For a clean and comfortable experience.
Step 1: Disconnecting the Tailgate Handle
Begin by opening your tailgate. Locate the handle on the inside of the tailgate, the one you use to open and close it. You’ll see two screws on either side of the handle. Use your 10mm socket and wrench to remove these screws.
Once the screws are removed, carefully pull the handle out of the tailgate. It may be slightly stuck, so gently wiggle it free.
Step 2: Removing the Tailgate Bolts
Now, locate the four bolts that secure the tailgate to the truck bed. These are usually found on the underside of the tailgate, two on each side. They are typically 10mm bolts, but it’s always a good idea to double-check with your owner’s manual.
Use your 10mm socket and wrench to loosen and remove these bolts. You may need an extension bar to reach them comfortably.
Step 3: Disconnecting the Tailgate Wiring Harness
Locate the wiring harness that connects the tailgate to the truck. It’s usually found near the passenger side of the tailgate. There is a connector with a release latch. Press the latch and pull the connector apart to disconnect the wiring harness.
Step 4: Lowering the Tailgate
With the bolts removed and the wiring harness disconnected, carefully lower the tailgate. It may be slightly heavy, so have a helper if you have one.
Step 5: Replacing the Tailgate (Optional)
If you’re replacing the tailgate, carefully remove the old tailgate and set it aside. Now, proceed to install the new tailgate. Make sure to align it properly and secure it with the bolts. Reconnect the wiring harness and reattach the handle.
Step 6: Tightening the Bolts and Reattaching the Handle
Once the new tailgate is in place, tighten all the bolts securely. Use your wrench or ratchet to ensure they are snug but not overtightened.
Reattach the handle to the tailgate by aligning it with the holes and securing it with the screws you removed earlier.
Final Steps: Testing and Enjoying
After completing all the steps, close the tailgate and test it to ensure it opens and closes smoothly. If you encounter any issues, double-check that all bolts are properly tightened and the wiring harness is securely connected.
Tailgate Removal: A Quick Recap
Removing the 2018 GMC Sierra tailgate is a relatively simple task that can be done with basic tools and a little patience.
1. Gather your tools: 10mm socket, socket wrench, extension bar, safety glasses, gloves.
2. Disconnect the tailgate handle: Remove screws and pull the handle out.
3. Remove the tailgate bolts: Loosen and remove the four bolts securing the tailgate.
4. Disconnect the wiring harness: Release the latch and pull the connector apart.
5. Lower the tailgate: Carefully lower the tailgate, being mindful of its weight.
6. Replace the tailgate (optional): If you’re replacing the tailgate, install the new one, aligning it properly and securing it with bolts.
7. Tighten the bolts and reattach the handle: Securely tighten all bolts and reattach the handle.
8. Test and enjoy: Close the tailgate and test its functionality.
Frequently Asked Questions
Q: What are some common reasons for needing to remove the tailgate?
A: Common reasons include replacing the tailgate, installing a bed liner, accessing the truck bed for cleaning or repairs, or performing modifications such as adding a tailgate step.
Q: Do I need any special tools to remove the tailgate?
A: No, the tools required are basic and commonly found in most toolboxes.
Q: Is there a risk of damaging the tailgate or truck bed during removal?
A: As long as you follow the steps carefully and use the correct tools, the risk of damage is minimal. However, always exercise caution and avoid applying excessive force.
Q: Can I remove the tailgate myself, or should I take it to a mechanic?
A: Removing the tailgate is a straightforward process that most DIY enthusiasts can handle. However, if you’re unsure or uncomfortable with the process, it’s always best to consult a mechanic.
Q: What should I do if I encounter any problems during the removal process?
A: If you encounter any issues, it’s best to stop and consult your owner’s manual or seek assistance from a mechanic. Avoid forcing any parts or using tools that are not appropriate for the task.