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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM & FUEL SYSTEM - 6.6L (LMM) - INTRODUCTION (2 OF 2)REPAIR INSTRUCTIONSFUEL INJECTION PUMP REPLACEMENTPREPARING THE FUEL INJECTION PUMP
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6

Preparing The Fuel Injection Pump

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Preparing The Fuel Injection Pump
  1. Hold the fuel pump by the drive gear in a vice with copper jaw liners.
  2. Loosen the gear nut until the nut is even with the end of the gear shaft.
  3. Remove the gear from the tapered shaft of the injection pump.
  4. Separate the injection pump and adapter by removing the 3 bolts and spacers.
  5. Inspect the O-ring for damage on the pump adapter and replace, if necessary. Lubricate the O-ring with clean engine oil.
  6. Clean all mating surfaces.
  7. Install the adapter on the pump.
    NOTE: Refer to Fastener Notice .
  8. Install the 3 bolts and spacers.

    Tighten:  Tighten the bolts to 20 N.m (15 lb ft).

  9. Install the gear and nut.

    Tighten:  Tighten nut to 70 N.m (52 lb ft).

RENDER: 1.0x

NO RELATED

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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.