04 Fuel Filter location?
Le Mans Master
Joined: Feb 2002
Posts: 6,937
Likes: 21
From: Waldorf MD
I believe that is true. The C6's have the same setup, guess they were getting ready.
Here is the Shop Manual for cleaning the fuel system of a 2004 C5:
Fuel System Cleaning
Tools Required
J 34730-1A Fuel Pressure Gauge
J 37088-A Tool Set, Fuel Line Quick Connect Separator
Caution
Refer to Battery Disconnect Caution in Cautions and Notices.
Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
Relieve the fuel system pressure. Refer to the Fuel Pressure Relief Procedure .
Drain the fuel tanks. Refer to Fuel Tank Draining Procedure .
Remove the fuel tanks. Refer to Fuel Tank Replacement .
Remove the fuel sender assemblies. Refer to Fuel Sender Assembly Replacement .
Inspect the left fuel sender strainer. Replace a contaminated strainer for the left fuel sender only, and inspect the fuel pump.
Inspect the left fuel sender fuel pump inlet for debris. Replace the left fuel sender assembly if you find debris in the fuel pump inlet.
Inspect the right fuel sender strainers. Replace the right fuel sender assembly if you find a contaminated strainer. The right fuel sender strainers are not serviced separately.
Important
When flushing the fuel tanks, handle the fuel and water mixture as a hazardous material. Handle the fuel and water mixture in accordance with all applicable local, state, and federal laws and regulations.
Flush the fuel tanks with hot water.
Pour the water out of the fuel sender assembly openings. Rock the tanks to be sure that removal of the water from the tanks is complete.
Install the fuel sender assemblies. Refer to Fuel Sender Assembly Replacement .
Install the fuel tanks. Refer to Fuel Tank Replacement .
Refill the fuel system.
Install the fuel filler cap.
Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
Perform the following procedure in order to inspect for leaks:
Turn the ignition switch ON for 2 seconds.
Turn the ignition switch OFF for 10 seconds.
Turn the ignition switch ON.
Inspect for fuel leaks.
Program the transmitters. Refer to Transmitter Programming in Keyless Entry.
Here is the Shop Manual for cleaning the fuel system of a 2004 C5:
Fuel System Cleaning
Tools Required
J 34730-1A Fuel Pressure Gauge
J 37088-A Tool Set, Fuel Line Quick Connect Separator
Caution
Refer to Battery Disconnect Caution in Cautions and Notices.
Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
Relieve the fuel system pressure. Refer to the Fuel Pressure Relief Procedure .
Drain the fuel tanks. Refer to Fuel Tank Draining Procedure .
Remove the fuel tanks. Refer to Fuel Tank Replacement .
Remove the fuel sender assemblies. Refer to Fuel Sender Assembly Replacement .
Inspect the left fuel sender strainer. Replace a contaminated strainer for the left fuel sender only, and inspect the fuel pump.
Inspect the left fuel sender fuel pump inlet for debris. Replace the left fuel sender assembly if you find debris in the fuel pump inlet.
Inspect the right fuel sender strainers. Replace the right fuel sender assembly if you find a contaminated strainer. The right fuel sender strainers are not serviced separately.
Important
When flushing the fuel tanks, handle the fuel and water mixture as a hazardous material. Handle the fuel and water mixture in accordance with all applicable local, state, and federal laws and regulations.
Flush the fuel tanks with hot water.
Pour the water out of the fuel sender assembly openings. Rock the tanks to be sure that removal of the water from the tanks is complete.
Install the fuel sender assemblies. Refer to Fuel Sender Assembly Replacement .
Install the fuel tanks. Refer to Fuel Tank Replacement .
Refill the fuel system.
Install the fuel filler cap.
Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
Perform the following procedure in order to inspect for leaks:
Turn the ignition switch ON for 2 seconds.
Turn the ignition switch OFF for 10 seconds.
Turn the ignition switch ON.
Inspect for fuel leaks.
Program the transmitters. Refer to Transmitter Programming in Keyless Entry.
Last edited by Oldvetter; May 7, 2007 at 03:20 PM.
Tech Contributor
Joined: Jan 2007
Posts: 19,401
Likes: 1,143
From: Dyer, IN
I'm by far no expert by on all year c-5's, but it is my understanding that for a 1999-2004, the fuel filter is mounted above the left gas tank. There is a filter inside the tank that is attached to the pump/sending unit assembly, but it is not something normally serviced. I just replaced the fuel filter on my 99, and it was a piece of cake.
Thread Starter
Pro
Joined: Feb 2004
Posts: 539
Likes: 0
From: Nevada City CA
I'm by far no expert by on all year c-5's, but it is my understanding that for a 1999-2004, the fuel filter is mounted above the left gas tank. There is a filter inside the tank that is attached to the pump/sending unit assembly, but it is not something normally serviced. I just replaced the fuel filter on my 99, and it was a piece of cake.
Le Mans Master
Joined: Feb 2002
Posts: 5,970
Likes: 20
From: San Marcos Texas
I'm by far no expert by on all year c-5's, but it is my understanding that for a 1999-2004, the fuel filter is mounted above the left gas tank. There is a filter inside the tank that is attached to the pump/sending unit assembly, but it is not something normally serviced. I just replaced the fuel filter on my 99, and it was a piece of cake.
That would be from 1999-2003.5. After mid year 2003 they changed the entire fuel system to the C6 style FFS fuel system. The fuel filter and pressure regulator are now part of the fuel bucket..Like $390 part
You can't just replace the filter. Its a whole assembly. Its part of the new EPA standards to keep people from spilling fuel while changing filters. Almost all newer cars are designed this way...So its like a 10 hour job on our cars if you get a bad batch of gas...
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Drifting
Joined: Oct 2004
Posts: 1,384
Likes: 8
From: Southwest Virginia
Yep, it's in the tank, what were they thinking?
Started in late 03 when GM starting experimenting on the C5 to see exactly how cheap they could build a C6! Unlike the 97 - early 03 where you could pull the pump without removing the tanks, you must remove the tanks on late 03 and 04 C5 to remove the pump or filter. And tanks on an 04 is no fun to remove either!
Thread Starter
Pro
Joined: Feb 2004
Posts: 539
Likes: 0
From: Nevada City CA
Yep, it's in the tank, what were they thinking?
Started in late 03 when GM starting experimenting on the C5 to see exactly how cheap they could build a C6! Unlike the 97 - early 03 where you could pull the pump without removing the tanks, you must remove the tanks on late 03 and 04 C5 to remove the pump or filter. And tanks on an 04 is no fun to remove either!
