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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1353 (ENGINE CONTROLS AND FUEL - 4.4L - INTRODUCTION)REPAIR INSTRUCTIONSMETAL COLLAR QUICK CONNECT FITTING SERVICEREMOVAL PROCEDURE
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6

Removal Procedure

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Removal Procedure
WARNING: This page is about a different car, the 2008 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Blowing Dirt Out Of Fitting (Metal Collar)
    GM12776Courtesy of GENERAL MOTORS CORP.
  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief (With CH 48027)  or Fuel Pressure Relief (Without CH 48027) .
  2. Remove the retainer from the quick-connect fitting.
    3. CAUTION: Wear safety glasses when using compressed air, as flying dirt particles may cause eye injury.
  3. Blow dirt out of the fitting using compressed air.
    4. Fig 2: View Of Quick Connect Locking Tabs (Metal Collar)
    GM12780Courtesy of GENERAL MOTORS CORP.
  4. Choose the correct tool for the size and access of the fitting:J 37088-A  orJ 44581  . Insert the tool into the female connector, then push inward to release the locking tabs.
    5. Fig 3: View Of Quick Connect Locking Tabs (Metal Collar)
    GM12782Courtesy of GENERAL MOTORS CORP.
  5. Pull the connection apart.
    6. NOTE: If necessary, remove rust or burrs from the fuel pipes with an emery cloth. Use a radial motion with the fuel pipe end in order to prevent damage to the O-ring sealing surface. Use a clean shop towel in order to wipe off the male tube ends. Inspect all the connections for dirt and burrs. Clean or replace the components and assemblies as required.
  6. Using a clean shop towel, wipe off the male pipe end.
  7. Inspect both ends of the fitting for dirt and burrs. Clean or replace the components as required.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.