How to Replace Gas Struts on a Tailgate
If you’ve ever found yourself struggling to keep your tailgate open - or worse, you’ve had it slam shut on you unexpectedly - it might be a sign that it’s time to replace your gas struts. A failing tailgate gas strut can turn a simple task into a frustrating or even dangerous one.
Tailgate gas struts are designed to make opening and closing your vehicle's rear hatch effortless. But over time, these struts can lose pressure, wear out, or even fail completely. When this happens safe operation becomes difficult, so a replacement is definitely the right path forward.
In this guide, we’ll walk you through the steps of replacing your tailgate struts safely and efficiently, with tips to help ensure a smooth and successful job. Here’s what we’ll cover:
- Signs your tailgate struts need replacing
- The tools you’ll need
- How to remove old tailgate struts
- How to fit the new struts
- Smooth replacement tips
Signs Your Tailgate Struts Need Replacing
There are a few clear signs that your gas struts are on their way out. If you’ve noticed any of the following, it’s time to take action:
- The tailgate won’t stay open on its own
- It opens slowly or not at all
- You hear rattling or squeaking when opening or closing
- You see rust, oil leakage, or visible wear on the struts
If any of these symptoms sound familiar, it’s worth taking a closer look at your tailgate struts. Double-check for physical signs of damage such as rust or oil leakage, and test how easily the tailgate opens and stays up.
A quick inspection can help you decide whether a replacement is needed and give you a clearer idea of the tools and struts required for the job.
What You’ll Need
Replacing gas struts is typically a straightforward job that only requires a few basic tools:
- Flathead screwdriver
- Protective gloves
- Prop rod or an adult human helper to hold the tailgate
- Replacement gas struts (matched to your vehicle)
If you’re not sure which struts you need, take a look at our gas struts sizing guide. It explains how to measure existing struts or identify compatible replacements.
How to Remove Old Tailgate Struts
Most tailgate struts use ball sockets or brackets for mounting. These fittings are designed for secure attachment but can be easily removed with the right technique.
Here’s how to do it.
Support the Tailgate
Before removing anything, you’ll need to secure the tailgate in an open position. Use a prop rod, a broom handle, or have a second person (an adult!) hold it up firmly for you. Never attempt to remove a strut with the tailgate unsupported as it can fall suddenly and cause injury.
Remove Clips or Fasteners
Inspect the ends of the gas strut where they attach to the car body and the tailgate. Most struts are held in place by metal clips. Using a flathead screwdriver, gently lift or pry open these clips just enough to release the strut. You don’t need to remove the clips completely, just enough to free the ball joint.
Detach the Strut Safely
Once the clips are loosened, you can carefully pull the strut away from the mounting points. It may take a little wiggling, but it should come free without excessive force. If it doesn’t, avoid prying too hard: forcing the strut can bend the fittings or damage the mounting points.
Double-check that the retaining clip is fully disengaged, and gently twist the strut to help ease it off. Applying a small amount of penetrating oil can also help loosen stubborn fittings. Remove one end at a time, keeping the tailgate supported throughout.
How to Fit the New Struts
With the old struts removed, you can now install the replacements. If you’re replacing both sides (recommended!), do one at a time to ensure continuous support.
Line Up the Mounting Points
Hold the new strut in position, checking that the orientation matches the one you just removed. Most struts are marked with arrows or text indicating which end should face up. The rod should generally point downwards when the tailgate is open.
Press Into Place
Gently press the socket onto the ball fitting until it clicks into place. In many cases, the clips will automatically snap shut. If not, secure them manually to ensure a firm connection.
Test for Smooth Operation
Once both struts are installed, slowly open and close the tailgate to check movement. It should feel smooth, even, and stay open without resistance. If you notice stiffness or uneven motion, double-check the fittings and alignment.
Tips for a Smoother Replacement
A few extra precautions can make all the difference when replacing tailgate struts. Follow the tips below to make the job smoother, avoid snags, and minimise the risk of injury.
- Replace in pairs: even if only one strut has failed, it’s best to replace both to ensure balanced support.
- Lubricate the fittings: a small amount of dry lubricant on the ball joints can help prevent future squeaks or binding.
- Check the orientation: make sure the rod end is facing down to keep the internal seal lubricated.
- Don’t force compression: never push the strut in manually to make it fit, and read our guide compressing a gas strut for installation if you need more info on the right technique.
Need Help Sourcing the Right Strut?
Installing a tailgate gas strut is a straightforward process that can be done in minutes with the right preparation, technique, and tools. By familiarising yourself with the correct method and common pitfalls, you can ensure smooth installation and keep frustration to a minimum.
As a general rule, if you support the panel, align your mounting points, and ensure the strut is fitted in the correct orientation, you’ll get smooth, reliable performance for years to come.