Katerina Swanson
Replacing the fuel filter on a Chevy Silverado 3500 HD is a job that can be done at home by an intermediate DIYer. It's important to replace your fuel filter on schedule to get the full life out of your injectors and keep your truck running well. This article will explain how to replace the fuel filter, including the tools you'll need and the steps to take.
How to replace the fuel filter on a Chevy Silverado 3500 HD
| Characteristics | Values |
|---|---|
| Location of the fuel filter | On the passenger side of the Duramax, below the air intake tube |
| Tools required | Trim fastener removal tool, or a flathead screwdriver |
| Steps | 1. Drain the water/fuel into a container and then properly dispose of it. 2. Disconnect the water-in-fuel sensor electrical connector. 3. Rotate the fuel filter counter-clockwise (from the bottom) and then remove it. 4. Keep the filter positioned upright to avoid spilling any remaining fuel. 5. Remove the center air intake tube between the air filter housing and the turbocharger. 6. Remove the passenger side inner fender. 7. Find the water-fuel separator drain valve at the bottom of the fuel filter. 8. Open the bleed screw at the top of the fuel filter housing, and then open the water separator drain valve. 9. Replace the old gasket with the new one (if provided). 10. Lubricate the new gasket with clean engine oil before installing it. 11. Install the new fuel filter in the reverse order of removal. 12. Do not fill the new filter with fuel. You will prime it after installation. |
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What You'll Learn
Draining the water/fuel and disconnecting the water-in-fuel sensor electrical connector
To drain the water/fuel, you will need to find the water-fuel separator drain valve at the bottom of the fuel filter. Open the bleed screw at the top of the fuel filter housing, and then open the water separator drain valve. Drain the water/fuel into a container and then properly dispose of it.
To disconnect the water-in-fuel sensor electrical connector, rotate the fuel filter counter-clockwise (from the bottom) and then remove it. Keep the filter positioned upright to avoid spilling any remaining fuel.
It is important to replace your fuel filter on schedule to get the full life out of your injectors and to keep your truck running well.
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Removing the air intake tube and passenger side inner fender
To remove the air intake tube and passenger side inner fender, you will need a trim fastener removal tool or a flathead screwdriver.
First, remove the centre air intake tube between the air filter housing and the turbocharger. Then, remove the passenger side inner fender. This is held in place by plastic body clips and two 10mm bolts.
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Opening the bleed screw and water separator drain valve
To open the bleed screw and water separator drain valve on a Chevy Silverado 3500 HD, you will need to locate the fuel filter on the passenger side of the Duramax, below the air intake tube. You will need a trim fastener removal tool or a flathead screwdriver.
First, remove the centre air intake tube between the air filter housing and the turbocharger. Then, remove the passenger side inner fender, which is held in place by plastic body clips and two 10mm bolts.
Now, you should be able to see the water-fuel separator drain valve at the bottom of the fuel filter. Open the bleed screw at the top of the fuel filter housing, and then open the water separator drain valve. Drain the water/fuel into a container and then dispose of it properly.
Be sure to keep the filter positioned upright to avoid spilling any remaining fuel.
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Replacing the old gasket with a new one and lubricating it
If your new fuel filter comes with a new gasket, replace the old gasket with the new one. Before installing the new gasket, lubricate it with clean engine oil.
To replace the fuel filter on a Chevy Silverado 3500 HD, you'll need to lift and safely support the vehicle to access the filter. The fuel filter is located on the passenger side of the Duramax, below the air intake tube. You'll need a trim fastener removal tool or a flathead screwdriver to remove the centre air intake tube between the air filter housing and the turbocharger. You'll also need to remove the passenger side inner fender, which is held in place by plastic body clips and two 10mm bolts.
Once you've accessed the fuel filter, find the water-fuel separator drain valve at the bottom of the filter. Open the bleed screw at the top of the fuel filter housing, and then open the water separator drain valve. Drain the water and fuel into a container and dispose of it properly. Disconnect the water-in-fuel sensor electrical connector. Rotate the fuel filter counter-clockwise (from the bottom) and then remove it, keeping the filter upright to avoid spilling any remaining fuel.
Install the new fuel filter in the reverse order of removal. Don't fill the new filter with fuel; you will prime it after installation.
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Installing the new fuel filter
To install the new fuel filter, you will need to lubricate the new gasket with clean engine oil before installing it. Then, install the new fuel filter in the reverse order of removal. Do not fill the new filter with fuel. You will prime it after installation.
If you are replacing the entire fuel filter housing, you will need to drain the water/fuel into a container and then properly dispose of it. Disconnect the water-in-fuel sensor electrical connector. Rotate the fuel filter counter-clockwise (from the bottom) and then remove it. Keep the filter positioned upright to avoid spilling any remaining fuel.
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Frequently asked questions
On a 2001-2016 Silverado, you’ll find the fuel filter on the passenger side of the Duramax, below the air intake tube.
You will need a trim fastener removal tool, or a flathead screwdriver, and a set of fuel line release tools.
Drain the water/fuel into a container and then properly dispose of it. Disconnect the water-in-fuel sensor electrical connector. Rotate the fuel filter counter-clockwise (from the bottom) and then remove it. Keep the filter positioned upright to avoid spilling any remaining fuel.
