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2003 Yukon Xl Flex Fuel Filter

marco2008

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marco2008 New Member

marco2008

Posted
Posted

I did not use a tool to remove it and just used a pair of pliers to hold down the tabs on the quick connect (engine side), and pushed out the connector. Then I noticed a small O-ring, a metal washer and a black plastic sleeve in the pan I had under the filter.

 

Are there any parts in the flex line from the engine side of the quick connect that I had pulled out with the filter? I had to pound on the filter with a wood block to get it pushed out of the plastic retaining ring, as the filter housing was rusted. I am wondering if I knocked some parts out of the flex line connector or the tip of the flare nut on the tank side.

 

Any info on this will be greatly appreciated.

C & A s Dad Senior Enthusiast

C & A s Dad

Posted
Posted

Man I wish I could help you. I have an 02 Flex Fuel Yukon XL and I am somewhat familiar with what you are talking about. I know what the retaining clips look like and how they release but am not aware on any o' rings. The tool typically used simply depresses both sides of the plastic retainer and allows the male end of the filter to be removed from the line. These retainers sometimes break and we do sell them for this reason.

 

Sorry I could not be of more help. You may want to post this in "Ask a Tech".

jrrod2004 Senior Enthusiast

jrrod2004

Posted
Posted

This may or may not help:

 

 

gmLogoFlat.gif Service Information

 

2003 GMC Truck Yukon XL - 2WD | Avalanche, Escalade, Suburban, Tahoe, Yukon (VIN C/K) Service Manual | Document ID: 803493 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.

 

 


  1. 871927.gif
     
  2. Relieve the fuel system pressure. Refer to the Fuel Pressure Relief .
  3. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  4. Clean the fuel filter connections.
  5. Using a flare nut wrench and backup wrench, loosen the fuel lines (1) from the fuel filter.
  6. Remove the fuel filter outlet line from the retainer and reposition the line out of the way.
  7. Slide the fuel filter out from the bracket.
  8. Inspect the fuel line O-rings for cuts, nicks, swelling, or distortion. Replace the O-rings if necessary.
  9. If a restricted fuel filter is found, clean the entire fuel system. Refer to Fuel System Cleaning .

Installation Procedure

 


  1. 871927.gif
     
  2. Slide a NEW fuel filter into the bracket.
  3. Position the fuel filter outlet line and install it to the retainer.
  4. 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.
     
  5. Using a flare nut wrench and backup wrench, tighten the fuel lines (1).Tighten
    Tighten the fittings to 25 N·m (18 lb ft).
     
  6. Lower the vehicle.
  7. Install the fuel fill cap.
  8. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  9. Perform the following in order to inspect for fuel leaks:

    8.1. Turn the ignition to ON, with the engine OFF, for 2 seconds.

     

     

    8.2. Turn the ignition to OFF for 10 seconds.

     

     

    8.3. Turn the ignition to ON, with the engine OFF.

     

     

    8.4. Inspect for fuel leaks.

     


© 2008 General Motors Corporation. All rights reserved.

jrrod2004 Senior Enthusiast

jrrod2004

Posted
Posted

gmLogoFlat.gif Service Information

 

2003 GMC Truck Yukon XL - 2WD | Avalanche, Escalade, Suburban, Tahoe, Yukon (VIN C/K) Service Manual | Document ID: 803488 Fuel Pressure Relief

Tools Required

J 34730-1A Fuel Pressure Gage

 

Caution: Relieve the fuel system pressure before servicing fuel system components in order to reduce the risk of fire and personal injury.

 

After relieving the system pressure, a small amount of fuel may be released when servicing the fuel lines or connections. In order to reduce the chance of personal injury, cover the regulator and the fuel line fittings with a shop towel before disconnecting. This will catch any fuel that may leak out. Place the towel in an approved container when the disconnection is complete.


  1. 180378.gif
     
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  3. Install the J 34730-1A . Refer to Fuel Pressure Gage Installation and Removal .
  4. Loosen the fuel fill cap in order to relieve fuel tank vapor pressure.
  5. Open the valve on J 34730-1A in order to bleed the system pressure. The fuel connections are now safe for servicing.
  6. Drain any fuel remaining in the gage into an approved container.
  7. Once the system pressure is completely relieved, remove the J 34730-1A .

© 2008 General Motors Corporation. All rights reserved.

jrrod2004 Senior Enthusiast

jrrod2004

Posted
Posted

gmLogoFlat.gif Service Information

 

2003 GMC Truck Yukon XL - 2WD | Avalanche, Escalade, Suburban, Tahoe, Yukon (VIN C/K) Service Manual | Document ID: 803489 Fuel Pressure Gage Installation and Removal

Installation Procedure

 

Tools Required

J 34730-1A Fuel Pressure Gage

 

Caution: Gasoline or gasoline vapors are highly flammable. A fire could occur if an ignition source is present. Never drain or store gasoline or diesel fuel in an open container, due to the possibility of fire or explosion. Have a dry chemical (Class B) fire extinguisher nearby.

 

Caution: Wrap a shop towel around the fuel pressure connection in order to reduce the risk of fire and personal injury. The towel will absorb any fuel leakage that occurs during the connection of the fuel pressure gage. Place the towel in an approved container when the connection of the fuel pressure gage is complete.

 

 


  1. 180378.gif
     
  2. Remove the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement in Engine Mechanical-4.8L, 5.3L, and 6.0L.
  3. Remove the fuel rail pressure fitting cap.
  4. Connect the J 34730-1A to the fuel pressure valve. Wrap a shop towel around the fitting while connecting the gage in order to avoid spillage.
  5. Install the bleed hose on J 34730-1A into an approved container.

Removal Procedure

 


  1. 180378.gif
     
  2. Remove the bleed hose on the J 34730-1A from the approved container.
  3. Remove the shop towel from around the fitting and discard into an approved container.
  4. Disconnect the J 34730-1A from the fuel pressure valve.
  5. Install the fuel rail pressure fitting cap.
  6. Install the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement in Engine Mechanical-4.8L, 5.3L, and 6.0L.

© 2008 General Motors Corporation. All rights reserved.

jrrod2004 Senior Enthusiast

jrrod2004

Posted
Posted

gmLogoFlat.gif Service Information

 

2003 GMC Truck Yukon XL - 2WD | Avalanche, Escalade, Suburban, Tahoe, Yukon (VIN C/K) Service Manual | Document ID: 824711 Upper Intake Manifold Sight Shield Replacement (4.8L, 5.3L, and 6.0L (RPO LQ4))

Removal Procedure

 


  1. 832094.gif
     
  2. Loosen the intake manifold sight shield bolt.
  3. Remove the sight shield from the sight shield retainer.
    832095.gif
     
  4. Remove the sight shield retainer bolts and the retainer, if required.

Installation Procedure

 


  1. 832095.gif
     
    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.
     
  2. Install the sight shield retainer and the bolts, if required.Tighten
    Tighten the bolts to 5 N·m (44 lb in).
     
     
    832094.gif
     
    Notice: Use care when installing the engine sight shield to avoid contacting the manifold absolute pressure (MAP) sensor wire harness connector. Loss of engine performance or engine damage may result.
     
  3. Install the intake manifold sight shield to the retainer.Tighten
    Tighten the bolt to 10 N·m (89 lb in).

© 2008 General Motors Corporation. All rights reserved.

marco2008 New Member

marco2008

Posted
  • Author
Posted

Thanks for the infos.

 

Looks like I goofed up the female quick connect's internals and now need to change to whole flex fuel line and quick connect. Anyone knows the part number for this item, or where Ic an get it?

 

It is roughly a 12" long flex fuel line that connects from the engine side to the fuel filter. It has a metal push on quick connect on the filter side, and a push on quick connect with metal locking clip on the engine side.

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