Went to replace my fuel filter today and wasn't able to do it. When I turned the connectors (multiple times) I heard grinding noises, so I stopped.

I think the grinding was dirt and gravel between the filter and the metal band/bracket that holds it to the frame, but not being sure, I aborted the replacement and thought I would come to the experts for some help....you guys.

Because the connectors on the new replacement filter don't turn, I assumed the ones on the present filter also do not turn, so I was attempting to turn the connectors on the lines going into the filter. Is this the right way to be doing it?

Does anyone have hints or tips for replacing the fuel filter? Also, I want to make sure I have the right fuel filter...the manual says GM P/N 25055052, but I got GM P/N 25171792 as a replacement. Is this correct?

I'll put pics up in a minute.

 

what does your manual say to do?

 

Here are some pics.
.

 

Document ID# 803493
2003 Chevrolet Avalanche - 2WD


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Fuel Filter Replacement (4.8L, 5.3L, and 6.0L Engines)
Removal Procedure
Important: Clean the fuel filter connections and surrounding are before disconnecting the fuel lines in order to avoid possible fuel system contamination.






Relieve the fuel system pressure. Refer to the Fuel Pressure Relief Procedure .
Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
Clean the fuel filter connections.
Using a flare nut wrench and backup wrench, loosen the fuel lines (1) from the fuel filter.
Remove the fuel filter outlet line from the retainer and reposition the line out of the way.
Slide the fuel filter out from the bracket.
Inspect the fuel line O-rings for cuts, nicks, swelling, or distortion. Replace the O-rings if necessary.
If a restricted fuel filter is found, clean the entire fuel system. Refer to Fuel System Cleaning .
Installation Procedure




Slide a NEW fuel filter into the bracket.
Position the fuel filter outlet line and install it to the retainer.
Tighten the fittings by hand until snug.
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

Using a flare nut wrench and backup wrench, tighten the fuel lines (1).

Tighten
Tighten the fittings to 25 N·m (18 lb ft).

Lower the vehicle.
Install the fuel fill cap.
Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
Perform the following in order to inspect for fuel leaks:
Turn the ignition to ON, with the engine OFF, for 2 seconds.
Turn the ignition to OFF for 10 seconds.
Turn the ignition to ON, with the engine OFF.
Inspect for fuel leaks.

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Document ID# 803493
2003 Chevrolet Avalanche - 2WD

 

put a wrench on the large nut next to the filter to keep the filter from turning and loosen the smaller nut on the line. make sure the line does not turn when you loosen the smaller nut. if it does stop and get some lubricant(wd-40, etc.). once both lines are loose remove the filter from the bracket.

 

Kevin, if you come by the house tonight, I'll help you.

Couple of things, be careful not to twist a fuel line. Second, looks like the disconnect is the same type as on the Radix fuel block, that plastic tool remember?

shoot some liquid wrench in the threads, let it sit for a minute, resume.
All the steps above sound straight forward enough.

call me at home if you need a walk through.

 

This is exactly the question I was needing to have answered to be confident with the replacement, thank you.

Thanks also to ranwalk, the other ambiguities I had are gone because of your posted article.

Now all I have to do is go buy a wrench to fit the connector on the fuel filter...I can't believe the largest open-end wrench I have is 3/4", and the fuel filter fitting is bigger than that!

 

I posted my experience with this same subject a while back. It was frustrating as hell to do on my truck.
I think because its a SCSB 4x4, even more f'ed up than the 2wd and the ECSB trucks. I have to post a pic of where mine is...it super stupid!!

Here was my old post. Man do I feel stupid after reading it.

https://www.performancetrucks.net/fo...d.php?t=272175

 

my line nuts were rusty when i replaced my filter and the line downstrem from the filter was a pita to move around

 

Thanks guys. Looks like the job will get done Friday morning, tomorrow I have to get the right wrench and some solvent (can't find my WD-40).