Replacing Fuel Pump In 2001 Chevy Silverado: Step-By-Step Guide

If you own a 2001 Chevy Silverado and are experiencing problems with its performance, you may need to replace the fuel pump. This is a common issue with these vehicles, and while it is a significant undertaking, it is relatively easy to do yourself. In this article, we will provide a step-by-step guide on how to change the fuel pump in your 2001 Chevy Silverado, covering everything from relieving fuel line pressure to reassembling and installing the new fuel pump module. By following these instructions, you can save yourself a good deal of money and avoid the hassle of taking your truck to a professional mechanic.

Relieve fuel line pressure

To relieve fuel line pressure, follow these steps:

Firstly, open the gas cap on the side of the truck. Then, remove the fuel pump relay from the fuse box. Next, start the engine and let it run until the vehicle shuts down. Make sure you are working in a well-ventilated area, free of any heat sources, sparks, and open flames. Do not smoke while working around fuel sources.

After the vehicle has shut down, disconnect the negative battery cable. Siphon the fuel out of the tank into a gas container. You can use a siphoning kit to do this.

Now, the fuel line pressure should be relieved. You can then move on to the next step of lifting the truck.

Lift the truck

Lifting the truck is an important step in changing the fuel pump of a 2001 Chevy Silverado. Here is a detailed, step-by-step guide:

Firstly, ensure you are working on level ground and use the appropriate lifting points to place the truck on jack stands in the manufacturer's recommended locations. If you don't have access to a lift, use four jack stands and lift the entire truck, rather than just the rear end. This is important for this particular job.

Next, remove the screws mounting the flange for the door to the gas cap using an Allen wrench. Disconnect and remove the shield over the tank and the filler pipe's ground strap.

Now, you need to remove the EVAP canister. Disconnect the hoses from the canister and remove the bracket mounting bolt.

At this point, you can disconnect the fuel supply and return lines. Exercise caution, as the fuel may still be under pressure. Press the retaining tabs for plastic quick-connect fittings, and use a fuel line separator tool for metal collar fittings.

To ensure safety, support the tank by raising a transmission jack underneath it.

Finally, you can now unbolt and remove the straps and lower the tank. Remember to unplug the electrical connectors to the fuel pump module and disconnect the filler hose from the tank by loosening its clamps.

This process will allow you to safely and effectively lift the truck and access the fuel pump for replacement.

Remove the fuel filler neck from the tank

Removing the fuel filler neck from the tank is the third step in changing the fuel pump of a 2001 Chevy Silverado. The fuel filler neck is in a difficult position to access, so this step is a little challenging. The fuel filler neck is located on the driver's side of the tank and above the frame. It is a large-diameter hose connected to the tank with a hose clamp.

To remove the fuel filler neck, you will need a stubby flat-head screwdriver. Loosen the hose clamp with the screwdriver, and the fuel filler neck should easily pull off.

It is important to work in a well-ventilated area free of any heat sources, sparks, and open flames when performing this task. Do not smoke while working around fuel sources.

Disconnect the fuel tank lines

To disconnect the fuel tank lines of your 2001 Chevy Silverado, follow these steps:

Step 1: Prepare the Work Area

Before you begin, ensure you have the necessary tools and safety equipment. Wear safety goggles to protect your eyes from any spilled gasoline. It is also important to work in a well-ventilated area, free from any heat sources, sparks, or open flames. Do not smoke while working around fuel sources.

Step 2: Lift the Truck

Use the appropriate lifting points and place the 2001 Chevy Silverado on jack stands in the manufacturer's recommended locations on level ground. If you don't have access to a lift, use four jack stands and lift the entire truck rather than just the rear end.

Step 3: Disconnect the Vapor Line

Move to the passenger side of the tank. Start by disconnecting the vapor line from the charcoal overflow tank. This line has a quick-release connector; squeeze at the base of the connection to detach it.

Step 4: Disconnect the Supply Line

Next, disconnect the larger supply line. This line also has a quick-release connector like the vapor line. Squeeze at the base and pull to disconnect it from the tank.

Step 5: Disconnect the Remaining Lines

There are two more lines above the vapor and supply lines that need to be disconnected. These lines have white connector clips that need to be pushed in simultaneously as you pull on the hose. Use both hands to detach these lines.

Step 6: Manage Spilled Gasoline

When you remove these hoses, a significant amount of gasoline will spill from the lines due to the remaining pressure. Be prepared to manage this spilled gasoline safely and clean up any spills to avoid fire hazards.

Step 7: Optional – Disconnect Power Lines to the Fuel Pump

If you need to access the power lines to the fuel pump, there are two quick-release electrical plugs on top of the fuel tank that can be disconnected. Ensure you relieve the fuel line pressure and disconnect the negative battery cable before performing this step.

Notes:

Always exercise extreme caution when working with fuel systems to prevent fires or injuries. Ensure you have the necessary tools and safety equipment before beginning the job.

Disconnect power lines to the fuel pump

To disconnect the power lines to the fuel pump of a 2001 Chevy Silverado, follow these steps:

Begin by relieving the fuel line pressure. Open the gas cap, remove the fuel pump relay from the fuse box, and then start the vehicle. Allow the engine to run until it shuts down by itself.

Next, ensure you are working in a well-ventilated area, free of any heat sources, sparks, and open flames. It is crucial not to smoke while working around fuel sources.

Now, locate the two quick-release electrical plugs on top of the fuel tank that power the fuel pump. Disconnect these plugs from the pump.

At this point, you have successfully disconnected the power lines to the fuel pump. You can proceed to the next steps, which involve removing the gas tank straps and lowering the tank.

Safety is paramount when working on your vehicle, especially when dealing with the fuel system. Always wear the appropriate safety gear, including safety goggles, and have a fire extinguisher nearby in case of any accidents.

Frequently asked questions