It is inside of the fuel tank. You will either have to raise the bed up and remove it from the top of the fuel tank. Are you can lower the fuel tank down from beneath the truck and service it that way. In 2004 CHEVY / GM. Move the fuel filter from the side of the frame rail, where it was easy to service and put them inside of the fuel tank.
frame rail
Where is the fuel filter located on a 1990 chevrolet blazer?
"Where is the fuel filter located on a 2001 Chevrolet Malibu?"
All major brands are good. Purolator, AC/Delco, etc
There is a fuel filter in the fuel tank, an inline fuel filter in the fuel line and a fuel filter in each fuel injector, so the answer would be 4. The only one that you would typically change would be the inline one on the frame rail.
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The 1985 Chevrolet Corvette fuel filter can be found next to the fuel tank. The fuel filter will be near the front of the fuel tank.
The 2010 Chevrolet Express runs on flex-fuel (unleaded/E85).