Ever wrestled with a sagging liftgate that just won’t stay up? You know the drill: you’re trying to load gear for an off-road adventure, groceries after a long day, or camping supplies, and that heavy hatch keeps threatening to bonk you on the head. It’s not just annoying; it’s a safety hazard and a real pain in the neck (literally!).
Don’t let a weak liftgate diminish your vehicle’s utility or your patience. The good news is that you don’t need a professional mechanic for this fix. Learning how to install liftgate struts is a straightforward DIY project that can save you money and restore your vehicle’s functionality.
This guide from FatBoysOffroad will walk you through every step, ensuring your liftgate holds strong and steady. We’ll cover everything from diagnosis to the final safety check, equipping you with the knowledge to tackle this repair with confidence.
Why Your Liftgate Struts Fail (and Why It Matters)
Those gas-charged cylinders that effortlessly hold your liftgate open aren’t designed to last forever. Over time, the internal seals can degrade, allowing the gas to leak out. This loss of pressure means they can no longer support the weight of the hatch.
Common Causes of Strut Failure
Wear and tear from countless opening and closing cycles is the primary culprit. Extreme temperatures, especially cold weather, can also accelerate their demise by making the seals less pliable. Even dirt and debris accumulating around the piston rod can damage the seals.
The Risks of Weak Liftgate Supports
A failing liftgate isn’t just an inconvenience. Imagine trying to load heavy equipment, and the hatch slams down unexpectedly. This poses a significant risk of injury to your head, hands, or back. It can also damage your cargo or the liftgate itself if it drops too forcefully.
Signs It’s Time for New Liftgate Supports
Catching the signs of failing struts early can prevent headaches and potential injuries. Pay attention to how your liftgate behaves. Early intervention means a safer and more convenient experience.
Identifying Worn Struts
The most obvious sign is a liftgate that won’t stay open on its own. It might drift downward slowly, or worse, fall rapidly. You might also notice a hissing sound when you try to open or close it, which indicates gas leakage.
Feeling the Difference
Another tell-tale sign is increased effort needed to lift the gate. If it feels much heavier than it used to, the struts are likely losing their ability to assist. In cold weather, their performance might worsen even faster.
Gathering Your Gear: Tools and Parts for the Job
Before you dive into replacing your liftgate struts, having the right tools and parts on hand makes the process smooth and efficient. A little preparation goes a long way. This isn’t a job you want to start and then realize you’re missing something crucial.
Choosing the Right Replacement Struts
First, you need the correct replacement struts for your specific vehicle. Look up your car’s make, model, and year. There are often different struts for vehicles with or without spoilers, or for heavier aftermarket accessories. Double-check the part numbers before purchasing.
Essential Hand Tools
You’ll typically need a flat-head screwdriver or a small pry tool to release the clips on the old struts. Sometimes, a small socket wrench or a Torx bit might be required if your struts are bolted on. Have a rag or shop towel handy for any grease.
Safety Equipment is Key
Always wear safety glasses to protect your eyes from flying debris or spring clips. Gloves can also be helpful to protect your hands. This is a simple job, but safety should always be your top priority.
Safety First: Essential Precautions Before You Start
Working on any part of your vehicle requires a focus on safety. When dealing with a heavy liftgate, proper precautions are paramount to prevent injury. Never skip these steps.
Recruiting a Helper
A liftgate is heavy. Having a second person to hold the liftgate securely open while you work on the struts is highly recommended. This prevents the gate from falling unexpectedly and causing injury.
Supporting the Liftgate Safely
If a helper isn’t available, you absolutely must use a sturdy prop rod or a piece of wood to hold the liftgate open. Position it firmly to prevent any movement. Do not rely on one failing strut to support the entire weight.
Working on Level Ground
Always perform this repair on a flat, stable surface. Engaging the parking brake is also a good practice to ensure the vehicle won’t roll. This provides a secure environment for your work.
Step-by-Step Guide: How to Install Liftgate Struts
Now for the main event! This detailed sequence will show you exactly how to install liftgate struts safely and effectively. Take your time, follow each instruction, and you’ll have your liftgate operating like new.
1. Secure the Liftgate
With your helper or prop rod, open the liftgate fully and secure it in the upright position. Make sure it cannot fall or shift while you are working. This is the most crucial safety step.
2. Locate the Struts
The liftgate struts are typically located on either side of the liftgate, connecting it to the vehicle’s body. There will be one on the driver’s side and one on the passenger’s side.
3. Removing the Old Struts
Most modern liftgate struts are held in place by ball-and-socket connectors with small metal clips.
- Start with one strut. Using your flat-head screwdriver or pry tool, gently pry up the metal retaining clip on one end of the strut (either the body side or the liftgate side).
- Once the clip is partially disengaged, you can usually pull the strut end off the ball stud.
- Repeat this process for the other end of the same strut.
- Remove the old strut completely and set it aside.
- Important: Only remove one strut at a time. Leaving one old strut attached, even if it’s weak, provides some stability while you work on the other side.
4. Installing the New Struts
New struts often come with their clips pre-opened or in a ready-to-install position.
- Take your new strut. Align one end of the new strut with its corresponding ball stud.
- Press the strut end firmly onto the ball stud until it clicks into place. You might need to apply a good amount of force. Ensure the clip fully engages around the ball stud.
- Repeat for the other end of the new strut. Make sure both ends are securely fastened.
- Once the first new strut is installed, you can then proceed to remove and replace the second old strut using the same method.
5. Testing Your New Struts
Once both new struts are installed, carefully remove your prop rod or have your helper release the liftgate. Slowly lower and raise the liftgate several times. It should now move smoothly and hold itself open without any assistance.
Testing Your New Struts and Final Checks
After the installation, a thorough check ensures everything is functioning correctly and safely. Don’t skip these final steps. They confirm your hard work paid off.
Smooth Operation
Open and close the liftgate fully several times. It should feel lighter and glide effortlessly. When fully open, it should stay firmly in place without any downward drift. Listen for any unusual noises during operation.
Proper Alignment
Visually inspect the liftgate’s alignment. If the struts were installed correctly, the liftgate should close evenly and latch properly without extra force. Misalignment could indicate an issue with how the struts were seated.
Avoiding Pinch Points
Ensure there are no wires, hoses, or other components that could get pinched when the liftgate opens or closes. This is especially important for vehicles with integrated wiring for lights or cameras in the liftgate.
Troubleshooting Common Liftgate Strut Issues
Even with careful installation, sometimes minor issues can arise. Here’s how to tackle a few common problems you might encounter after learning how to install liftgate struts.
What if the Liftgate Still Sags?
If your liftgate still sags, first double-check that both ends of both new struts are fully seated on their ball studs. A partially engaged clip can prevent proper support. Also, confirm you installed the correct struts for your vehicle’s weight. Sometimes, heavy aftermarket accessories (like roof racks or bike carriers) can add enough weight to require heavy-duty struts.
Liftgate is Too Stiff or Hard to Close
New struts are often very strong, and it might take a few cycles for them to “break in.” If it’s excessively stiff, ensure the struts are installed in the correct orientation (though most are symmetrical). If the problem persists, you might have received incorrect struts that are too powerful for your specific application.
Unusual Noises After Installation
Squeaks or groans usually indicate a lack of lubrication or improper seating. Try applying a small amount of silicone grease to the ball studs where the struts connect. If the noise continues, re-check the installation for any loose connections or misaligned components.
Frequently Asked Questions About Liftgate Strut Replacement
This section addresses some of the most common queries DIYers have when tackling this repair.
How long do liftgate struts typically last?
Most liftgate struts are designed to last between 5 to 7 years, but this can vary greatly depending on usage, climate, and vehicle type. Frequent use, especially in extreme temperatures, can shorten their lifespan.
Can I replace just one liftgate strut?
While technically possible, it’s strongly recommended to replace both struts at the same time. The remaining old strut will likely fail soon, and having one new and one old strut can lead to uneven wear and potentially uneven support, causing stress on the new strut or the liftgate hinges.
Is it dangerous to drive with bad liftgate struts?
Driving with bad liftgate struts isn’t inherently dangerous in terms of vehicle operation, but it poses a significant safety risk when opening or closing the liftgate. The sudden drop of a heavy hatch can cause serious injury to anyone in its path.
What’s the difference between liftgate struts and shocks?
While often used interchangeably in casual conversation, “struts” in this context refers to gas-charged support cylinders designed to hold a specific weight in an open position. “Shocks” typically refer to suspension components that dampen vehicle movement. These liftgate components are specifically called gas springs or lift supports.
How do I know what size or strength of strut to buy?
The best way is to look up the part number for your vehicle’s specific make, model, and year. You can often find this information on the old strut itself (though it might be faded) or by using an online parts finder with your VIN. Aftermarket manufacturers will list compatibility clearly.
Hit the Road with Confidence!
There you have it! You’ve learned how to install liftgate struts, transforming your vehicle from a head-bonking hazard to a functional, safe companion. This DIY fix not only saves you money but also gives you a deeper understanding of your rig. Now, loading up your camping gear, off-road recovery tools, or just a week’s worth of groceries will be a breeze.
At FatBoysOffroad, we believe in empowering you to tackle these projects yourself. A well-maintained vehicle is a reliable vehicle, whether you’re hitting the trails or just cruising the pavement. Keep those hatches holding strong, and your adventures will be all the smoother. Stay safe and stay comfortable!
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