
Installing a Titan fuel tank on a 2005 Silverado can be a great way to increase fuel capacity and extend the range of your vehicle. Titan Fuel Tanks offer a variety of options for trucks, including extra-large underbed storage, in-bed transfer tanks, and custom auxiliary tanks. The installation process involves removing the stock tank, sliding the new Titan tank into place, and securing it with straps and bolts. Some users have reported that the installation is fairly easy and can be done at home, while others have encountered challenges with fitting the rear straps correctly. With a Titan fuel tank, you can expect a significant increase in fuel capacity, allowing for longer trips without the need for frequent refuelling stops.
| Characteristics | Values |
|---|---|
| Installation | Installation is fairly easy and can be done at home. |
| Fuel capacity | The Titan tank offers a capacity of 52 gallons, with some models holding 55 or 57 gallons. |
| Fuel range | With 52 gallons of fuel, the theoretical highway range is over 1,000 miles. |
| Fuel gauge accuracy | The fuel gauge will remain correct, but distance-to-empty calculations may be inaccurate. |
| Hardware | The Titan tank comes with a powder-coated crossmember support bracket, steel strap set, rubber bushings, and vent hoses with rollover safety valves. |
| Mounting | The tank can be mounted by sliding it into the steel straps or by fitting the straps to the tank and lifting it into place. |
| Compatibility | The Titan tank fits right where the stock tank sits and requires minimal modifications for installation. |
| Weight | The tank weighs approximately 45 pounds. |
| Fuel type | The Titan tank is suitable for diesel fuel. |
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What You'll Learn

Drain the factory tank
To install a Titan fuel tank, it is important to have your factory tank as empty as possible. Diesel weighs about 7 pounds per gallon, so you want to drain as much fuel as you can from the factory tank.
Park your vehicle on a level surface and allow the engine to cool down before you begin. Locate the drain plug on the bottom of the factory fuel tank. Place a drain pan or container with a capacity large enough to hold the remaining fuel under the drain plug.
Loosen and remove the drain plug using the appropriate-sized wrench or socket. Allow the fuel to drain completely from the tank into the container. Once the fuel has stopped draining, carefully tighten the drain plug back into place.
It is important to note that you should not reuse the drained fuel, and it should be disposed of properly. This process will help ensure that your factory tank is as empty as possible before installing the new Titan fuel tank.
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Remove the driveshaft
To remove the driveshaft from a 2005 Silverado, you will need basic automotive repair skills and about 30 minutes. First, lift the rear end of the Silverado with a floor jack and support it on two jack stands placed under the rear axle, near the spring perches. Now, slide underneath the vehicle with a socket set and tape. Remove the bolts holding the rear of the driveshaft to the differential yoke, being careful to prevent the u-joint from falling out of the yoke. Wrap electrical tape around the ends of the u-joint to keep the caps from falling off.
Place a third jack stand under the front end of the driveshaft. Grab the shaft and pull it towards the rear of the Silverado until it pulls out of the transmission. Push a rag into the transmission to keep dirt out.
Before beginning the installation of your new Titan fuel tank, ensure your factory tank is as empty as possible. Titan XXL underbed fuel tanks offer added storage by increasing the tank's length. The first step in the installation process is to hang the new rear support strap. Next, slide the new tank into place, lifting from the rear first. It is possible to either slide the tank into the steel straps or fit them to the tank and lift both into place.
Once lined up, use a pair of floor jacks and some wooden blocks to gently raise the tank into place so that you can secure the rear strap bolts and the front crossmember. Reattach the fuel feed and return lines and route the new vent lines.
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$1247.55

Hang the new rear support strap
To hang the new rear support strap, you will need to slide the new Titan tank into place, with the rear going first. You can either slide the tank into the steel straps or fit them to the tank and lift both into place.
Getting the rear straps to fit correctly can be challenging. Once the tank is lined up, use a pair of floor jacks and some wooden blocks to gently raise the tank so that you can secure the rear strap bolts. You will also need to secure the front crossmember at this point.
The Titan tank comes with a powder-coated steel crossmember to support the front, as the added length of the tank requires additional support. This crossmember slips over the frame rail's lower lip and is secured with a set screw.
With the new tank in place, you can reattach the fuel feed and return lines and route the new vent lines.
It is important to note that the installation process may vary slightly depending on the specific model and year of your Silverado.
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Slide the tank into place
Now that you've drained the factory tank, hung the new rear support strap, and removed the driveshaft, it's time to slide the new Titan tank into place. This step can be done in two ways: you can either slide the tank into the steel straps first or fit the straps to the tank and lift both into place.
Getting the rear straps to fit correctly can be challenging, but there are tools to help with this. Once the tank is lined up, use a pair of floor jacks and a few pieces of wood to gently raise it into place. This will allow you to secure the rear strap bolts and the front crossmember.
At this point, you can also reattach the fuel feed and return lines and route the new vent lines. Remember to be gentle during this process to avoid damaging any components.
The new Titan tank will hang about 1-2 inches below the bottom of the factory tank shield due to its added length. To support the front, Titan provides a new powder-coated steel crossmember that slips over the frame rail's lower lip and secures in place with a set screw.
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Secure the tank and reattach fuel lines
To secure the Titan fuel tank in place, you will need to slide it into the steel straps and lift it into position. You can also fit the straps to the tank first and then lift the two into place together. Floor jacks and pieces of wood can be used to gently raise the tank so that you can secure the rear strap bolts and the front crossmember.
The tank will come with a powder-coated steel crossmember support bracket to support the front of the tank. This slips over the frame rail's lower lip and is secured with a set screw.
Once the tank is in place, you can reattach the fuel feed and return lines. You will also need to route the new vent lines at this point.
The original sending unit can be reused and requires no modifications.
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Frequently asked questions
The first step is to hang the new rear support strap.
The second step is to slide the tank into place, with the rear going first.
The third step is to secure the tank by raising it with floor jacks and pieces of wood, then securing the rear strap bolts and the front crossmember.











































