Replacing Chevy Equinox's High-Pressure Fuel Pump: Step-By-Step Guide

If you're experiencing issues with your Chevy Equinox's high-pressure fuel pump, it may be time to consider replacing it. The fuel pump plays a critical role in delivering fuel from the tank to the fuel injectors, ensuring the engine runs smoothly. While it is a complex process, replacing the high-pressure fuel pump can be done by following these steps: relieving fuel system pressure, disconnecting relevant components, removing the old pump, and installing a new one with proper lubrication and alignment. However, due to the risk of fire, it is recommended that this task be left to professionals. The average cost for this replacement ranges from $1,109 to $1,265, including labour and parts.

Disconnect the battery

To replace the high-pressure fuel pump in a Chevy Equinox, the first step is to disconnect the battery. This is a crucial safety measure to reduce the chance of a fire occurring during the replacement process. Working with the fuel system of a car can be dangerous, so it is important to take all necessary precautions.

To disconnect the battery, locate the battery terminal, which is usually a large red clamp attached to the battery post. Using a wrench, loosen the nut on the negative (-) terminal and then carefully remove the cable. Ensure that the cable does not touch any metal parts of the car during this process. Once the cable is removed, cover the terminal with a piece of electrical tape or a terminal cover to prevent accidental contact.

After disconnecting the battery, it is a good idea to wait for a few minutes before proceeding with the next steps of the replacement process. This ensures that any residual electrical charge in the system dissipates, further reducing the risk of fire or electrical short circuits.

When you have completed the replacement of the high-pressure fuel pump, you can reconnect the battery. Remove the electrical tape or cover from the negative terminal and reattach the cable to the battery post. Tighten the nut securely with the wrench. Ensure that the cable is firmly connected and cannot be easily pulled off.

By following these steps, you can safely disconnect and reconnect the battery when replacing the high-pressure fuel pump in a Chevy Equinox.

Remove the access cover

To remove the access cover of your Chevy Equinox to replace the high-pressure fuel pump, follow these steps:

First, disconnect the battery to reduce the chance of a fire. This is an important safety precaution when working on any part of the fuel system. Make sure you have the necessary tools and safety equipment before proceeding.

Next, locate the access cover for the fuel pump. The fuel pump on your Chevy Equinox is likely located inside the fuel tank, so the access cover will be on the top or side of the fuel tank. It may be secured with bolts or clamps.

Once you have located the access cover, place a drain pan or container under the fuel tank to catch any spilled fuel. Do not allow any fuel to come into contact with hot surfaces or open flames, as this could result in a fire or explosion. Carefully loosen and remove the bolts or clamps securing the access cover, using the appropriate tools. Place the removed bolts or clamps in a safe place so they do not get lost.

With the bolts or clamps removed, carefully lift and remove the access cover. Set it aside in a clean, safe place. Be careful not to damage any nearby components or wiring.

Now that the access cover has been removed, you should be able to see the fuel pump and pre-pump filter screen. Before proceeding, refer to your Chevy Equinox service manual for detailed instructions on how to replace the high-pressure fuel pump. It is important to follow the manufacturer's guidelines to ensure a safe and proper repair.

Replace the pump and pre-pump filter screen

To replace the pump and pre-pump filter screen of a Chevy Equinox, you will need to follow a detailed procedure. Here is a step-by-step guide:

• Disconnect the battery: Before starting any work on the fuel system, it is crucial to disconnect the battery to reduce the risk of fire.
• Access the fuel pump: If the pump is inside the fuel tank, remove the access cover. In some cases, you may need to drain the fuel before removing the access panel.
• Remove the old pump: Disconnect any fuel lines and carefully remove the old high-pressure fuel pump, along with its components (bolts, O-ring, gasket, and roller lifter).
• Prepare the new pump: Lubricate the cylinder head bore and roller lifter of the new high-pressure fuel pump with camshaft prelube.
• Install the new pump: Position the new pump, gasket, and bolts in place. Ensure that the camshaft lobe is in the base circle position before installation. You may need to use an alignment gauge for this step. Force will be required while hand-tightening the bolts.
• Tighten the bolts: Refer to the manufacturer's specifications for torque values and tighten the high-pressure fuel pump retaining bolts securely.
• Connect the wiring harness: Ensure that the fuel pump and fuel rail fittings are clean, then connect the wiring harness to the new high-pressure fuel pump.
• Reinstall the thermostat housing: Follow the manufacturer's instructions for the thermostat housing replacement procedure.
• Check for leaks: Install the fuel tank cap and perform a leak test by turning on the ignition with the engine off for 2 seconds, then turning it off for 10 seconds. Finally, turn on the ignition again and inspect for any fuel leaks.

It is important to note that working with the fuel system can be dangerous, so take all necessary precautions to prevent fires. Additionally, it is recommended to replace the fuel filters at the same time as the fuel pump to ensure optimal performance.

Re-connect the fuel lines

To reconnect the fuel lines of your Chevy Equinox, follow these steps:

• Ensure the vehicle's battery is disconnected to reduce the risk of fire and prevent any accidental ignition.
• Identify the fuel lines: these are the lines that run from the fuel tank to the engine, supplying fuel to the injectors.
• Inspect the fuel lines and connections for any signs of damage, leaks, or wear. Ensure that the lines are intact and no repairs are needed.
• If you have replaced the fuel pump, insert the new pump, ensuring it is securely connected to the fuel lines and electrical connections.
• Reconnect the fuel lines to the new fuel pump, ensuring they are securely attached.
• Check that the fuel lines are properly aligned and secured at all the factory clamp locations. You may need to use steel clips or fasteners to secure the lines.
• Once the fuel lines are reconnected, check for any fuel leaks. Ensure that there are no signs of fuel leaks or odors before starting the vehicle.

It is important to note that working with the fuel system can be dangerous. Always take the necessary precautions and, if you are not experienced in auto repair, it is recommended to leave this task to a professional mechanic.

Check for leaks

When checking for leaks in your Chevy Equinox, there are a few key areas to inspect. Firstly, it is important to identify the source of the leak, which can often be challenging. Start by looking for any visible signs of fuel dripping or pooling, especially around the fuel tank, fuel lines, and the area near the passenger-side rear tire. If you notice fresh spots on the ground or pavement, it could indicate a leak.

Next, pay attention to any unusual smells, such as a strong gasoline odour. This may be noticeable both while driving and when the vehicle is parked. A fuel leak can also cause the check engine light to illuminate. If you suspect a leak, it is crucial to address it immediately as fuel leaks can be dangerous.

If you suspect a leak from the fuel pump, it is recommended to inspect the fuel pump seal gasket that sits between the pump and the tank. Over time, this gasket can deteriorate and leak. Additionally, it is important to check the fuel pressure to ensure there is no restricted evap hose causing a pressure buildup in the tank, which could force fuel out through the vent valve.

In some cases, the issue may lie with the fuel lines. Fuel lines are fragile and susceptible to rust, so inspect them carefully for any signs of damage or corrosion. If you have a floor jack, you can use it to support the tank while you inspect the fuel lines and tank for any signs of leaks. Remember to unhook the fuel lines and wiring before dropping the tank.

If you are unable to identify the source of the leak, it is advisable to seek assistance from a qualified mechanic or a Chevrolet dealership, especially if your vehicle is still under warranty. They will have the necessary tools and expertise to diagnose and address the issue.

Frequently asked questions