2005 Envoy 4.3L - Fuel Filter

[fox]

Could someone tell me where the fuel filter is?

Thanks

[Scott K]

The filter is part of the fuel sender assy inside the fuel tank. It is not a normal maint item.

[fox]

Thanks, 4wnderingeyes

The manual I have says it's by the tank, but I can't find it. I guess I'll just wait for problems.

[Jeremy airjer W]

Check the front of the tank on the side that face the drive shaft. There's something funky about it but I seem to remember a fuel filter being there.

[NIBOWMAN]

The fuel filter has both input and output lines on the same end of the canister attached with quick connect fittings. Napa #3129, I also believe it is located just in front of the fuel tank.

[LightningBG]

It's my understanding on the 2005 Envoy and later, the fuel filter is integrated into the fuel pump (along with fuel gauge sending unit). To replace it, you'll have to drop the tank (no small task).

I'm debating doing it (have been for a year) because my sending unit doesn't work. Looking at 3-4 hours from what I hear (for a novice).

The earlier envoy's had an inline fuel filter on the outside along the rail under the doors (i think)

Here is a picture of the pump:

[Scott K]

This is what the shop manual says for an 05 Envoy, regardless of engine size.

Quote:

FUEL FILTER

The fuel filter is contained in the fuel sender assembly inside the fuel tank. The paper filter element of the fuel filter traps particles in the fuel

that may damage the fuel injection system. The fuel filter housing is made to withstand maximum fuel system pressure, exposure to fuel

additives, and changes in temperature. There is no service interval for fuel filter replacement.

This is what the 04 Envoy say with the 5.3

Quote:

FUEL FILTER

This vehicle has a lifetime fuel filter built into the fuel sender inside the tank and thus is not serviceable separately. The fuel filter is not a

replaceable part.

and for the 04 Envoy with a 4.2 the shop manual says it is mounted externally and is replaceable.

[deadeye]

Sometimes they got what looks like a fuel filter on the lines but it is called something like a pulse dampner. I'm not sure what's in them but I remember having to go to the dealer to pick it up for a shop when they were replacing a broken line.