How to Change a Fuel Filter in Chevrolet Cars

by Contributing Writer

If you experience sluggishness or stalling in your Chevrolet car chances are it could be a dirty or clogged fuel filter. It is a fairly easy part to replace and inexpensive as well. The filter on your Chevrolet car is designed to trap any sand or other contaminants from getting to the engine, where they can do severe damage. Filters should be changed routinely, about the same amount of time as when you do a tuneup on your Chevrolet car. Change the filter in just a few minutes and save yourself a lot of expense and additional frustration.

Under The Hood:

 How to Change a Fuel Filter in a Chevy S10

Unscrew the gas cap from the gas tank to relieve the pressure from the fuel filter.

Locate the fuel filter under the cab of the truck on the driver's side. The fuel filter will be in a round bracket under the driver side inside of the frame rail.

Put the catch pan under the fuel filter to catch the excess fuel.

Remove the fuel line with the plastic clip by squeezing the head of the plastic clip and pulling the line back at the same time. The lip of the plastic clip is locked onto the fuel filter. When you squeeze the head of the plastic clip, it releases the lip and allows you to pull the fuel line back from the fuel filter.

Remove the other fuel line with a 9/16 wrench. Put the wrench on the head of the fuel line and turn it counter -clockwise and remove the fuel line.

Slide the fuel filter out of the round bracket. The Chevy S10 has a round bracket that holds the fuel filter in place. Discard the fuel filter into the catch pan.

Slide the new fuel filter into the round bracket.

Push the fuel line with the plastic clip onto the fuel filter tube. Push the fuel line straight onto the tube until the plastic clip locks in place. You will feel the plastic clip when it locks onto the tube. Then gently pull back on the fuel line to make sure that it is locked on.

Screw the other fuel line onto the fuel filter and tighten it down with the 9/16 wrench.

Screw the gas cap back onto the gas tank.

Turn the ignition key on and off three times to prime the fuel filter. Then crank the engine.

Inspect the fuel filter and the fuel lines to make sure that they are not leaking. Then turn off the engine.

Items you will need

  • 9/16 wrench

  • Catch pan

  • New fuel filter

 How to Change a Fuel Filter in a Chevy Malibu

Park your car in a safe place, loosen up the fuel filler cap, open the hood and locate the power distribution box at the front left-hand side, or driver's side, of the engine compartment.

Start the engine and let it idle as you remove the lid from the power distribution box and unplug the fuel pump relay. Marks on the inside back of the lid or the relay itself should identify the unit.

Let the engine stall and then crank the engine for about three seconds to relieve the remaining pressure from the system.

Raise the back of the vehicle using a floor jack and safely support it on two jack stands.

Locate the fuel filter at the back of the car--between the fuel tank and rear bumper--and clean both fuel lines connected to the fuel filter to prevent fuel contamination once you disconnect the fuel lines.

Remove the evaporative control system, or EVAP, canister next to the fuel filter if you need more access to the filter. You can remove the canister using a wrench or ratchet and socket.

Disconnect the fuel supply line from the fuel filter--the line going to the engine--using a backup wrench and a flare or line wrench to avoid damage to the line.

Grasp the quick-connect line fitting at the other end of the filter and press the lock tabs. Slightly twist the fitting from side to side to remove any dirt from the line connection. While pressing the tabs, push the fitting against the filter and then pull it away to disengage the line.

Remove the filter from its mounting bracket and set the new filter in place, making sure the arrow on the side of the filter case points towards the fuel supply line.

Connect the supply fuel line by hand to avoid damage to the threads and install the quick-connect line to the other end of the filter. Tighten the supply line to 20 foot-pounds, or 27 Nm, using the backup and flare wrenches.

Install the evaporative control system canister and lower the vehicle.

Tighten the fuel filler cap, install the fuel pump relay, start the engine and check for fuel leaks at the fuel filter connections.

Items you will need

  • Floor jack and 2 jack stands

  • Wrench set

  • Ratchet and socket set

  • Flare or line wrench

 How to Change the Fuel Filter on a Chevy Colorado

Park the Chevy Colorado in a safe working environment with a level surface.

Walk to the rear of the truck and remove the gas cap. This alone will be enough to remove the fuel pressure from the fuel filter.

Jack up the rear axle of the Chevy Colorado and place the jack stands evenly and securely under the rear axle on both sides. Then, slowly lower the Colorado onto the jack stands.

Crawl in front of the gas tank and locate the fuel filter. The fuel filter will be enclosed in a black plastic bracket. The fuel filter will also have two black fuel lines coming out of it, one on each end.

Slide the catch pan underneath the fuel filter. Compress the plastic clips that are on the ends of the fuel lines with a clean rag. Then rotate the fuel lines counterclockwise one-quarter of a turn and pull the lines straight off the fuel filter. Do this to both fuel lines. The plastic clips are what hold the fuel lines to the fuel filter.

Pull the fuel filter out of the black plastic bracket and discard it into the gas catch pan. Position the new fuel filter into the bracket. Be sure that the flow arrow on the fuel filter is facing in the correct direction. The arrow should be pointing towards the outlet fuel line, which is on the driver side.

Push the fuel lines straight onto the new fuel filter tubes until they lock in place. Then, carefully pull out on the lines just to ensure that both fuel lines are secured to the fuel filter tubes. Pull the catch pan out from under the Colorado and screw the gas cap back on.

Get in the truck and turn the ignition on and off four different times to prime the new fuel filter. Then, crank the engine on the fifth turn. Get out of the truck and inspect the new fuel filter for leaks while the engine is running. Then, turn the engine off.

Jack the rear of the Chevy Colorado back up and pull the jack stands out from under the rear axle. Then, lower the Colorado back to the ground and pull the jack out.

Items you will need

  • Jack

  • Jack stands

  • Gas catch pan

  • Clean rag

  • New fuel filter

 How to Replace a Fuel Filter in a Chevy Impala

Locate the fuel filter. Normally this is on the passenger side wheel well or just inside the engine compartment. Before removal of the filter, relieve the pressure in the fuel system by pulling the fuel pump fuse, and allowing the vehicle to run until it stalls due to lack of fuel.

Disconnect the negative battery cable. Disconnecting the negative battery prevents explosion and flammability danger because where there is no spark, there can't be an explosion.

Remove the filter from the mounting bracket and then unscrew the threaded fitting at the outlet end of the filter with an open end wrench to fit. Now disconnect the quick connect fitting at the head of the filter and empty any excess gas into the container.

Replace the filter into the holder and torque the holding bolt to 15 ft. lbs. Connect the quick connect fitting to the inlet side of the filter and then screw the threaded fitting into the outlet end of the filter and tighten to 22 foot pounds.

Reconnect the negative battery cable and start the ignition. To fill the filter and get gas to the ignition system, turn the ignition on for 2 seconds and then off for 10 seconds. The vehicle should start after this. Check for any fuel leaks in the system before starting. Now start the car.

Items you will need

  • Empty container

  • New fuel filter

 How to Change the Fuel Filter in a 2004 Chevy Avalanche

Park the 2004 Chevy Avalanche in a very well-ventilated area, preferably outside.

Take the gas cap off the gas tank so that there will be no fuel pressure on the fuel filter.

Crawl under the driver side of the 2004 Chevy Avalanche near the driver-side door and locate the fuel filter. The fuel filter will be enclosed inside of a black plastic bracket and mounted to the inside of the driver-side frame rail. The fuel filter will have two screw-on fuel lines coming out of each end. Some versions of the 2004 Chevy Avalanche actually have a screw-on fuel line on one end and a quick-connect fuel line on the other end.

Position the gas catch pan under the fuel filter. Loosen the hex head nuts on the end of the fuel lines counterclockwise with the 16 mm open-end wrench. Finish loosening the fuel lines with your fingers. Pull the fuel lines out of the fuel filter. You can also use a 5/8-inch open-end wrench to loosen the fuel lines.

Push the fuel filter out of the black plastic bracket with your hand. Put the fuel filter into the gas catch pan.

Insert the new fuel filter into the bracket with the flow arrow on the filter pointing in the direction of the engine. Make sure that the fuel filter is positioned evenly inside of the bracket because the fuel lines were made just long enough to reach the ports on the fuel filter.

Screw the two fuel lines back onto the ports of the fuel filter. Tighten the fuel line hex head nuts clockwise with the 16 mm open-end wrench. Then, remove the gas catch pan out from under the truck and put the gas cap back on.

Get in the driver's seat and turn the ignition on and off four times. This method will fill the new fuel filter up with fuel and remove the air from the fuel filter. Crank the truck on the fifth turn of the ignition.

Inspect the new fuel filter for leaks. Then, turn the truck off.

Items you will need

  • Gas catch pan

  • 16 mm or 5/8-inch open-end wrench

  • New fuel filter

 How to Replace a Fuel Filter in a Blazer

Locate the fuel filter under the drivers inside the frame of the vehicle. You will see a silver cylinder that is attached to the fuel line attached to each end of the filter.

Place an empty container on the ground below the fuel filter to catch any fuel that drains out when you undo the filter. Notice the direction of the filter and how it is positioned so you can replace it the same way.

Detach the straps holding the fuel filter in place with a screwdriver. Undo the screws and pull the fuel filter and line away from the straps.

Unscrew the fuel line from the fuel filter on one side and allow the fuel to drain into the container. When it is competely drained, unscrew the other side and remove the filter from the vehicle.

Attach the new fuel filter to the fuel line by screwing one side if the filter to the line and then doing the same to the other side. Confirm that you have the fuel filter positioned in the same direction as the old one.

Reattach the straps that hold the fuel line and filter in place and verify that all connections are tight.

Start the engine and check to see if there are any leaks in the line. When you are satisfied, shut the engine off.

Remove the container from under the vehicle and pour any drained fuel back into the fuel tank.

 How to Replace a Fuel Filter in a Chevy Cobalt

Locate the fuel filter. In the Cobalt, the fuel filter is between the feed pipe and the fuel injectors. Before removal of the filter, relieve the pressure in the fuel system by pulling the fuel pump fuse, and allowing the vehicle to run until it stalls due to lack of fuel. Disconnect the negative battery cable.

Look along the fuel line from the fuel tank to the fuel injectors until you find the filter. Chances are very likely that the mounting clip is under the car just before the front passenger side wheel well. You will need to lift the car up to access it. Block the rear of the back wheels and raise the jack.

Remove the filter from the clip holder and carefully clamp off the two fuel feed hoses. Replace the filter, inspect the hose ends and lines leading to and away from the filter for defects or signs of wear, then reattach the fittings to the inlet and outlet of the new filter. Tighten the fittings and replace it in the clip.

Reconnect the negative battery cable and check thoroughly for fuel leaks. Now start the ignition. To fill the filter and get gas to the ignition, you may have to let the starter crank a few seconds. The vehicle should start after this.

 How to Change a Fuel Filter on a Chevy 1500

Park the Chevrolet Silverado 1500 on level ground and set the emergency brake.

Remove the gas cap from the gas tank to relieve the pressure off of the fuel filter.

Slide under the driver's side of the Chevrolet Silverado 1500 and locate the fuel filter. The fuel filter is located inside of the driver's-side frame rail, between the driver's-side cab of the truck and the driver's-side rear tire.

Slide the small fluid catch pan underneath the fuel filter to catch the small amount of excess fuel inside of the fuel lines and the fuel filter.

Unscrew both fuel lines from the fuel filter with a 14-mm wrench. Hold the fuel filter with one hand, and turn the hex head on the fuel line with the 14-mm wrench counterclockwise to loosen and remove the fuel line. Do this to both fuel lines. Let the fuel lines hang down toward the catch pan.

Slide the fuel filter out of the round bracket from front to back. Slide the new fuel filter into the bracket from the rear of the bracket with the arrow on the fuel filter facing the front of the truck. The arrow that is stamped on the fuel filter represents the fuel flow through the fuel filter.

Screw both hex head fuel lines onto the new fuel filter and tighten them down with the 14-mm open-end wrench.

Put the gas cap back on the gas tank. To prime the fuel filter with fuel, turn the ignition on and off three times. Crank the engine on the fourth turn.

Inspect the fuel lines and the fuel filter for leaks. Turn the engine off.

Items you will need

  • Small fluid catch pan

  • 14-mm open-end wrench

  • New fuel filter

 How to Replace the Fuel Filter on a Chevrolet Caprice Classic

Park the Chevrolet Caprice Classic in a well-ventilated area. Make sure that the Caprice is also parked on a level surface.

Remove the gas cap from the tank. This will remove the pressure from the fuel filter.

Jack the rear of the Chevrolet Caprice Classic up and put the jack stands on both sides of the car. Position the jack stands under the frame rail directly in front of both rear tires. Lower the Caprice onto the jack stands.

Slide under the driver side of the Caprice between the driver-side door and the driver-side rear tire. Locate the round fuel filter that is attached to the driver-side frame rail. The round fuel filter is housed inside of a round bracket and has one fuel line coming out of each end of the filter. The fuel filter is held tight to the bracket by a small bolt and nut.

Slide the fluid catch pan below the fuel filter. Locate the white plastic clips at the end of the fuel lines. These white plastic clips secure the fuel lines to the fuel filter. Compress the plastic clips with your fingers until the fuel line unlocks from the fuel filter. Then, pull the fuel line off the fuel filter. Do this to both fuel lines.

Loosen the nut from the bracket bolt until the fuel filter is loose enough to slide out of the bracket. Slide the old fuel filter straight out of the round bracket. Put the old filter into the fluid catch pan.

Push the new fuel filter into the round bracket. Position the fuel filter so that the arrow that is stamped on the fuel filter is facing the engine. Tighten the nut until the clamp is tight over the fuel filter.

Push both of the fuel lines onto the fuel filter until you feel the plastic clips lock onto the fuel filter. Then, gently pull on the fuel lines to ensure that the fuel lines are secured to the fuel filter. Slide the catch pan out from under the Caprice.

Screw the gas cap back onto the neck of the fuel tank. Make sure that the gas cap is tight.

Prime the fuel filter with fuel by turning the key on and off three times. Then, crank the engine. Inspect the new fuel filter around the fuel lines for gas leaks while the engine is running. Turn the engine off.

Jack the rear of the Caprice back up and remove the jack stands. Lower the Caprice to the ground.

Items you will need

  • Jack

  • Jack stands

  • Open end wrench set

  • Fluid catch pan

  • New fuel filter

 How to Change the Fuel Filter in a Chevy Trailblazer

Relieve Fuel System Pressure

Open the fuel door and remove the gas tank cap located on the driver's side of the vehicle. Pop the hood and locate the fuse box over the driver's side wheel. Use the diagram underneath the fuse box cover to find the fuel pump relay and disconnect it.

Get in the vehicle and crank the engine. Allow the engine to sputter and stall out until it shuts off. This shouldn't take more than a few seconds, and must be done to relieve pressure from the fuel system.

Use the pliers to disconnect the negative battery cable. Disconnecting the battery will keep the fuel system from re-pressurizing.

Replace the Fuel Filter

Engage your vehicle's parking brake for safety. Locate the fuel filter underneath the middle section of the vehicle on the driver's side. If you have trouble locating the fuel filter, look directly in front of the gas tank, next to the frame rail.

Use the pliers to remove the locking nuts around the fuel filter. Be careful when removing it. Although you have released the fuel system pressure, some gasoline may still drip down.

Install the new fuel filter with the arrow pointing towards the rear of the vehicle. Re-attach the locking nuts with the pliers. Plug the fuel relay back into the fuse box and re-attach the negative battery cable. Put your gas cap back on.

Start the engine and inspect the new fuel filter for leakage. If you have properly tightened the nuts, leaks should not be present.

Items you will need

  • Pliers

  • Replacement fuel filter

 How to Replace the Fuel Filter on a 2002 Chevrolet S-10

Turn the ignition key off. Remove the gas cap. Disconnect the negative battery cable, using an 8 mm wrench. Place several shop towels under the fuel pressure test port, located on the fuel rail near the firewall.

Remove the black plastic dust cap from the test port and depress the Schrader valve in the port, using a small screwdriver, until gasoline no longer sprays out of the test port. Remove the fuel soaked shop towels from the engine compartment.

Secure the truck with wheel chocks wedged against the front tires. Position the floor jack under the driver-side frame rail near the rear leaf-spring shackle. Raise the rear of the truck until there is sufficient room to work under the S-10. Support the rear of the truck by placing a jack stand under the frame near the floor jack, and lowering the jack until the S-10 is sitting firmly on the stand.

Locate the fuel filter on the inside of the driver-side frame rail and position a drain pan under the filter. Squeeze the two small plastic retaining clips on the fuel line fitting on the front of the filter and slide the fuel line off the filter's nipple. Allow any fuel that spills out of the filter and line to drain into the drain pan. Slip a 13/16-inch wrench on the fitting nut on the back of the filter and unscrew the fuel line fitting from the nut using a 9/16-inch wrench.

Slide the old filter out of the plastic filter mount and lay it in the drain pan. Push the new filter into the mount and guide the rear fuel line into the filter-fitting nut. Start the fuel line fitting by hand and tighten it securely, using the wrenches. Push the front fuel line onto the fuel filter nipple until it snaps onto the nipple and it cannot be removed by pulling on it.

Reconnect the negative battery cable. Prime the fuel system by turning the ignition key on and off several times. Check for leaks at the fuel filter fittings. Start the engine and check one final time for leaks before removing the drain pan and jack stand. Lower the floor jack and slide it from under the truck.

Items you will need

  • Wheel chocks

  • Floor jack

  • Jack stands

  • Wrench set

 How to Replace a Fuel Filter in a Geo Tracker

Remove the Fuel Filter

Disconnect the negative battery cable from the terminal. Relieve the pressure in the fuel system while taking necessary precautions. Remove the fuel tank filler cap to release any built-up pressure, then reinstall the cap.

Raise the vehicle. Check to make sure the supports are safe and secure. Take a drain pan and several clean shop rags to mop up any spilled fuel.

Crawl under the right side of the vehicle between the front and back wheels. Set the drain pan under the fuel filter to catch any fuel that drains from the lines.

Press the fuel line clamp tabs with a pair of pliers and detach the fuel lines from the fuel filter. Slide the clamp down both fuel lines away from the fuel filter while maintaining pressure on the clamp.

Note the position of the fuel filter inlet and outlet nipples before removing the fuel filter. Remove the lower clamp bolt and loosen the clamp adjusting bolt. Remove the filter from the mounting clamp. Lift the fuel filter out of the mounting clamp.

Install the Fuel Filter

Work under the vehicle. Slide the new filter into its mounting clamp. Tighten the adjusting bolt until it's snug.

Turn the filter in the clamp so that the inlet and outlet nipples are in the same position as before removal. Tighten the adjusting bolt. Put the lower clamp bolt in position. Tighten it securely.

Connect the outlet hose to the top filter nipple. Connect the inlet hose to the lower nipple. Push the fuel lines up over the nipples as far as possible.

Compress the fuel line clamp tabs and slide the clamp up each line until it is secure over the nipple.

Position the clamps at least 1/4 inch from the connected end of the fuel lines, making sure the clamps are set over the nipples.

Reconnect the negative battery cable. Start the engine and allow it to idle. Check for fuel leaks and make the necessary adjustments.

Turn the engine off. Lower the vehicle.

 How to Replace a Fuel Filter in a Chevy Camaro

Disconnect the negative battery cable and locate the fuel filter, which is mounted directly in front of your Camaro's rear axle. The filter is on the fuel pipe line before the fuel injection system. Carefully loosen the fuel filter cap to relieve the tank pressure.

Ensure the fittings on both ends of the fuel filter are clean. Slide the dust covers off of the quick-connect fittings. Twist the female connector a quarter turn in each direction as you hold both sides of the fitting. This will loosen any dirt. Put on safety glasses and blow any dirt or debris out of the fitting with compressed air.

Use the quick release tool if your Camaro has metal fittings. Insert the tool into the female connector and push inward until you release the locking tabs. Then you can pull the connector apart. If your Camaro has a plastic fitting, you just need to squeeze the plastic retainer release tabs as you pull the connection apart.

Clean male pipe ends with a rag. Take the threaded outlet fitting out of the chassis fuel pipe and slide the fuel filter out of the bracket. Replace the fuel pipe O-ring if there are any cuts, nicks or distortion.

Put the new fuel filter into the bracket. Tighten the outlet fitting to the chassis fuel pipe up to to 22 foot-pounds. Place a few drops of clean engine oil on the male pipe end. Push both sides of the fitting together until the retainer tabs snap into place. Check to make sure the fitting is secure.

Replace the dust cover over the quick-connect fitting and tighten the cap on the fuel filter. Reconnect the negative battery cable. Turn on the ignition switch for 2 seconds. Turn it off and wait for 10 seconds. Turn it to the on position again and check for fuel leaks. Your Chevrolet Camaro should be ready for another 30,000 miles of driving.

Items you will need

  • Wrench

  • Safety glasses

  • Air compressor

  • Quick-connect separator tool set

  • Lint-free rag

 How to Replace the Fuel Filter on a Duramax 6.6 Turbo Diesel

Open the hood and locate the fuel filter on the passenger's side of the engine bay, near the firewall. Allow the engine to cool down, if it has been running.

Depress the two release tabs on the wiring connector located on the water separator mounted on the bottom of the fuel filter. Pull the wire downward and out of the water separator.

Place the jaws of a filter wrench around the fuel filter. Turn the wrench in a counterclockwise direction to loosen the filter from the mounting. Remove the wrench and finish twisting off the filter by hand. Lower the filter straight down and let it rest on the frame rail.

Grasp the edges of the plastic passenger side wheel well liner from outside the vehicle, behind the front wheel, and pull it downward. Reach in the opening and remove the filter from the frame rail. Empty the fuel from the filter into a drain pan.

Remove the white, plastic water separator from the bottom of the fuel filter with a special wrench available from auto parts stores. Remove the old O-ring from the separator and push on a new one from your new fuel filter kit. Thread the separator onto the bottom of the new fuel filter and tighten it with the special tool.

Remove the old filter gasket and place a new one from your fuel filter kit into the same position. Place the filter in an upright position on the frame rail through the opening in the wheel well liner. Push the liner back into position until it snaps into place.

Reach down and pick up the filter from the engine compartment and raise it to the filter mounting surface. Thread the filter into place by hand, then tighten it with the filter wrench. Push the water separator connector back into the wiring harness connector until it locks into place.

Loosen the black bleeder screw on top of the fuel filter housing with a flat-head screwdriver three turns. Pump the round pump handle on top of the filter housing until fuel starts to seep from the bleeder screw. Tighten the screw. Start the engine and check for leaks. Tighten the filter further with the filter wrench, if necessary. Close the hood.

Items you will need

  • Fuel filter wrench

  • Drain pan

  • Water separator wrench

  • Replacement fuel filter kit

  • Flat-head screwdriver

 How to Change the Fuel Filter in a 1998 Chevy Truck

Open the hood to access the engine compartment. Locate the fuse panel near the battery. Remove the fuse in the panel that is marked "fuel pump."

Start the truck and allow it to run until it stalls. This will take the pressure out of the fuel line.

Crawl under the vehicle on the driver side near the rear wheel. The filter will be mounted to the frame rail.

Loosen the fuel lines with a crescent wrench. Pull them away from the filter.

Unbolt the filter from the frame rail with a socket wrench. Pull the filter away from the truck.

Bolt the new filter to the frame rail. Ensure the arrow is facing toward the front of the truck. The arrow designates fuel flow.

Thread the inlet and outlet line to the fuel filter. Tighten it with a crescent wrench.

Plug the fuse back into the fuse panel. Turn the ignition key to the "Start" position, and then turn it back to the "Off" position. Repeat this process to prime the fuel back through the fuel line. Start the truck and allow it to run. Inspect the fuel line for leaks.

Items you will need

  • Crescent wrench

  • Socket wrench

  • Socket set

  • New fuel filter