Replacing Envoy Fuel Filter: Step-By-Step Guide For Diyers

Replacing the fuel filter on a GMC Envoy is a complex process and is recommended to be done at a car service. However, if you're looking to do it yourself, there are a number of steps to follow. Firstly, locate the fuel pump relay under the fuse box housing and start the engine. Then, take out the fuse, which will cause the car to run out of fuel. Stop the engine, reinsert the fuse, and jack up the front driver's side of the car. Next, locate the fuel filter, which is usually in front of or near the fuel tank on the driver's side. Clean the area around the inlet and outlet fittings, and put a pan underneath the filter to catch any leaking fuel. You will then need to release the pressure from the lines by removing the cap from the fuel line and pressing the fuel line to release any remaining fuel. Disconnect the hoses from the filter, remove the old filter, and insert the new one. Reattach the hoses, lower the car, and replace the relay and negative battery cable. Finally, start the engine.

Remove gas fill cap and fuel pump relay

To remove the gas fill cap and fuel pump relay on a GMC Envoy, follow these steps:

Firstly, locate the fuel pump relay in the under-hood fuse box. Start the engine and let it run until it stalls, then continue to crank it for another 5-10 seconds.

Next, disconnect the negative battery cable. You may also need to jack up the front driver's side of your car for easier access.

Now, locate the fuel filter directly in front of the fuel tank. Clean the area around the inlet and outlet fittings, noting their order (the fuel filter is directional).

Place a pan underneath the filter to catch any spillage. Unscrew the cap from the bleeder valve and depress it with a screwdriver or pliers to release any remaining pressure, then screw the cap back on.

Use needle-nose pliers or your fingers to squeeze the quick-connect clips and pull off each of the hose fittings one at a time, again noting the location of the inlet and outlet tubes. Some fuel will be released during this step.

Finally, with the preparations out of the way, you can now proceed to unscrew the gas fill cap and remove the fuel pump relay.

Jack up the front driver's side

Jacking up the front driver's side of your GMC Envoy is an essential step in replacing the fuel filter. Here is a detailed, step-by-step guide to help you through the process:

Step 1: Prepare the Necessary Tools and Materials

Before you begin, ensure you have the required tools and materials. For this step, you will need a jack, safety glasses, and a pan or oil pan to catch any leaking gasoline during the process.

Step 2: Jack Up the Front Driver's Side

Park your Envoy on a level surface and engage the parking brake. Place the jack securely underneath the front driver's side of the vehicle, following the instructions in your owner's manual for the correct placement. Once the jack is in position, slowly raise the vehicle until the front driver's side tire is off the ground. It is recommended to use jack stands for added safety.

Step 3: Secure the Vehicle and Prepare the Work Area

Before proceeding, ensure the vehicle is securely supported by the jack or jack stands. Place the pan or oil pan underneath the fuel filter area to catch any gasoline that may leak during the disconnection process. Put on your safety glasses to protect your eyes from any debris or gasoline.

Step 4: Locate the Fuel Filter

The fuel filter on a GMC Envoy is typically located directly in front of the fuel tank on the driver's side. Clean the area around the inlet and outlet fittings to ensure you have easy access to the fuel filter and its connections.

Now that you have jacked up the front driver's side of your GMC Envoy, you can proceed to the next steps of replacing the fuel filter, which involve releasing pressure from the fuel lines, disconnecting the hoses, and removing the old fuel filter. Remember to always exercise caution when working with gasoline and refer to your owner's manual for additional safety guidelines.

Locate the fuel filter

To locate the fuel filter on a GMC Envoy, you must first prepare the car. Start by removing the gas fill cap. Then, remove the fuel pump relay from the under-hood fuse box. Next, start the engine and run it until it stalls. Continue to crank the engine for 5-10 seconds. Disconnect the negative battery cable. Jack up the front driver's side of the car, if necessary.

Now, locate the fuel filter. It should be directly in front of the fuel tank on the driver's side of the car. Clean the area around the inlet and outlet fittings, making note of the order of the two, as the fuel filter is directional. Place a pan underneath the filter to catch any fuel that may leak out.

The location of the fuel filter can vary from car to car, but the procedure to replace it is the same. If you cannot find the fuel filter, follow the fuel pipes, and you should find it.

Release pressure and drain remaining fuel

To release pressure and drain the remaining fuel from your GMC Envoy, follow these steps:

Firstly, remove the fuel pump relay in the under-hood fuse box. Then, start the engine and run it until it stalls. Continue to crank the engine for 5-10 seconds after it stalls. This will ensure that the fuel pressure is released.

Next, locate the fuel filter. For the GMC Envoy, it is located directly in front of the fuel tank on the driver's side. Place a pan or tray underneath the filter to collect any fuel that may leak out during the removal process.

Now, you can release the remaining pressure in the system. To do this, locate the bleeder valve. Unscrew the cap and depress the valve with a screwdriver or pliers. Screw the cap back on once the pressure is released.

At this point, you can proceed to remove the fuel filter by disconnecting the hose fittings. However, before doing so, squeeze the quick-connect clips with needle-nose pliers or your fingers and pull off each of the hose fittings one at a time, noting the location of the inlet and outlet tubes. The filter is directional, so ensure you take note of the correct orientation.

Some fuel will be released during this process, which is why it is important to have a pan or tray underneath to catch the leaking fuel.

Remove and replace the fuel filter

To remove and replace the fuel filter on a GMC Envoy, follow these steps:

Firstly, remove the gas fill cap. Then, remove the fuel pump relay from the under-hood fuse box. Start the engine and let it run until it stalls. Continue to crank the engine for another 5-10 seconds. Disconnect the negative battery cable. Jack up the front driver's side of the car, if necessary.

The fuel filter is located on the driver's side, under the car, and near the fuel tank. Clean the area around the inlet and outlet fittings, noting their order (the fuel filter is directional). Place a pan underneath the filter to catch any spillages. Unscrew the cap from the bleeder valve and depress it with a screwdriver or pliers to release any remaining pressure, then screw the cap back on.

Use needle-nose pliers or your fingers to squeeze the quick-connect clips and pull off each of the hose fittings one at a time, noting the location of the inlet and outlet tubes. The filter is directional, so some fuel will come out when disconnected. Unscrew the filter clamp and remove the old filter, tilting it into the pan to spill out any excess fuel.

Now it's time to install the new fuel filter. Screw in the new filter, ensuring the inlet side is towards the tank and the outlet is towards the engine. Snap the fittings back on, lower the vehicle, and replace the relay and negative battery cable. Screw the gas cap back on.

Finally, start the engine. It may take a few cranks to get the fuel back up. Check for any leakages.

Please note that GMC recommends replacing the fuel filter every 30,000 miles.

Frequently asked questions