Mercedes Mullins
If you're experiencing problems with your 2005 GMC Yukon, you may need to replace the fuel pump. The fuel pump is responsible for delivering gas from the fuel tank to the fuel injectors, and it needs to deliver the right amount of fuel at a high enough pressure to keep the engine running smoothly. If your fuel pump is leaking or making a lot of noise, get it checked right away. Replacing the fuel pump can be dangerous, so unless you are very experienced in auto repair, it's best to leave this job to the professionals.
| Characteristics | Values |
|---|---|
| Average cost for a GMC Yukon Fuel Pump Replacement | $979 and $1,186 |
| Labor costs | $236 and $298 |
| Parts | $743 and $888 |
| Shop/Dealer Price | $1762.00 - $2541.82 |
| Symptoms of a bad fuel pump | Leaks, makes a lot of noise, loss of engine power, car won't start, check engine light comes on |
| Fuel pump location | Vehicle's gas tank |
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What You'll Learn
Disconnect the battery
Disconnecting the battery is the first step in replacing the fuel pump on a 2005 Yukon. It is important to do this to reduce the chance of a fire.
To disconnect the battery, you will need to remove the negative cable. This is the black cable attached to the negative terminal, which is usually marked with a "-" symbol. Before you begin, make sure you have the necessary tools, such as a wrench or socket set, and safety equipment, such as gloves and eye protection.
Park the Yukon on a level surface and engage the parking brake. Locate the battery, which is typically found in the engine compartment or in the trunk, and identify the negative cable. Loosen the nut or bolt that secures the cable to the negative terminal using the appropriate tool. Do not allow the wrench or socket to come into contact with any other metal parts, as this could result in a short circuit. Once the cable is loose, carefully remove it from the terminal.
If there is a battery cover, remove it and set it aside. You may need to remove any clamps or brackets holding the battery in place before you can access the cables. Ensure that the negative cable does not touch any metal parts of the Yukon, as this could cause a short circuit.
It is recommended to disconnect the positive cable as well, especially if you plan to store the Yukon for an extended period. The positive cable is typically red and attached to the positive terminal, marked with a "+" symbol. Follow the same procedure as for the negative cable, ensuring that the cable does not touch any metal parts.
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Relieve fuel system pressure
To relieve fuel system pressure on a 2005 GMC Yukon, it is recommended that you first disconnect the battery to reduce the chance of a fire.
Next, with the engine cold, go to the fuel rail and unscrew the cap of your Schrader valve (it looks like a tyre air valve). Be careful not to let any fuel squirt out.
Another method is to pull the fuel pump fuse and crank the engine a few times. Do not smoke while doing this.
It is also possible to relieve pressure by drilling a hole in the fuel tank, but this is not recommended.
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Drain the fuel tank
To drain the fuel tank of a 2005 Yukon, follow these steps:
First, loosen the fuel filler cap to relieve the fuel tank vapor pressure. Next, raise the vehicle. Loosen the fuel fill hose clamp that is attached to the tank. Then, disconnect the fuel fill hose from the fuel fill pipe. Finally, use a hand or air-operated pump device to drain the fuel through the fuel fill hose. Make sure you have several cans ready to hold the drained fuel.
Alternatively, you can try using an extra electric fuel pump to drain the tank. These can be purchased online for a low price. Simply hook up the pump to the tank outlet with rubber hoses, connect a 12v supply, and wait for the fuel to be pumped out.
Please note that working with the fuel system is dangerous, so take all necessary precautions to avoid starting a fire.
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Disconnect the fuel tank
To disconnect the fuel tank of a 2005 GMC Yukon, follow these steps:
Firstly, locate the fuel tank and ensure the area is well-ventilated. Place a suitable container underneath the tank to catch any spillages. Identify the fuel lines and connections leading to and from the tank. These may include inlet and outlet hoses, as well as electrical connections if applicable.
Next, carefully loosen and detach any clamps, couplings, or fittings securing the fuel lines to the tank. Some lines may have quick-disconnect fittings, while others may require a wrench or specialized tool for detachment. Ensure that you do not damage the lines or the tank during this process.
Once the lines are disconnected, gently lower or remove the fuel tank, following the appropriate safety procedures. If the fuel pump is located inside the tank, you may need to remove an access cover to reach it. Be cautious, as some fuel may still be present in the tank or lines, and always dispose of it properly.
If your vehicle is equipped with a fuel tank pressure sensor, you may need to disconnect it separately. This sensor is typically located near the fuel tank and is connected to the vehicle's fuel system. Ensure that you detach it carefully to avoid damage.
Finally, if your Yukon has a charcoal canister, it may need to be replaced if it is filled with gas or if there are issues with the vent valve. This canister is part of the evaporative emissions system and can become clogged with charcoal pellets, impacting the vehicle's performance.
Remember to take all necessary safety precautions when working with fuel systems, and always refer to the manufacturer's guidelines or seek professional assistance if you are unsure about any steps in the process.
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Remove the fuel sender assembly
To remove the fuel sender assembly, you will first need to disconnect the battery to reduce the chance of a fire. Next, you will need to access the fuel pump. If there is an access panel in the passenger compartment above the tank, you can use that to reach the pump. If not, you will need to drain the fuel from the tank and then lower the tank from the vehicle to access the pump.
Once you have access to the pump, you will need to remove the fuel pump supply and return hoses, as well as the EVAP system hoses, and electrical connections to the pump. Be sure to take note of how these components are connected so that you can properly reinstall them later.
With the hoses and electrical connections removed, you can now remove the fuel sender assembly from the fuel tank. Inspect the assembly for any damage or issues, such as leaks or a faulty fuel level sensor. If you notice any problems, be sure to address them before installing the new assembly.
Before installing the new fuel sender assembly, you will need to attach any reusable brackets and pick-up screens to the new assembly. Refer to the instructions that came with your new assembly to ensure proper installation.
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Frequently asked questions
If your fuel pump is leaking, making a lot of noise, or causing a loss of engine power, it may be faulty. Other signs include the engine failing to start or the check engine light coming on.
No, driving with a faulty fuel pump is dangerous. If the car is running, drive it to a safe spot and then have it towed to a shop for repairs.
Fuel pumps do not have a specific replacement interval. However, replacement becomes more common as the mileage on the car increases.
No, due to the risk of fire, it is recommended that you let a repair shop handle this job.
