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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 4 (ENGINE CONTROL SYSTEM & FUEL SYSTEM - 4.3L - INTRODUCTION (2 OF 2))REPAIR INSTRUCTIONSFUEL TANK FUEL PUMP MODULE REPLACEMENTREMOVAL PROCEDURE
2008 Chevrolet Chevy Express G3500, Van Passenger Extended

Removal Procedure

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Removal Procedure
WARNING: This page is about a different variant/trim than selected.
    Fig 1: Identifying Quick Connect Fittings
    GM1940956Courtesy of GENERAL MOTORS CORP.
  1. Remove the fuel tank. Refer to Fuel Tank Replacement (with E26)  or Fuel Tank Replacement (without E26) .
  2. Disconnect the fuel tank fuel feed pipe quick connect fitting (1) from the module. Refer to Plastic Collar Quick Connect Fitting Service .
  3. Disconnect the evaporative emission (EVAP) pipe quick connect fitting (2) from the module. Refer to Plastic Collar Quick Connect Fitting Service .
  4. Disconnect the EVAP front pipe quick connect fitting (3) from the module. Refer to Plastic Collar Quick Connect Fitting Service .
  5. Reposition the fuel and EVAP pipe ends out of the way.
    6. Fig 2: Identifying Fuel Tank Module Lock Ring
    GM1940960Courtesy of GENERAL MOTORS CORP.
  6. Install the J 45722  (1) to the fuel tank module lock ring. See Special Tools .
    7. Fig 3: Identifying Lock Ring
    GM1642096Courtesy of GENERAL MOTORS CORP.
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.