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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 5 (ENGINE CONTROL SYSTEM & FUEL SYSTEM - 6.6L (LMM) - INTRODUCTION (2 OF 2))REPAIR INSTRUCTIONSFUEL INJECTOR REPLACEMENT (LEFT)REMOVAL 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.
  1. Remove the upper fan shroud. Refer to Engine Coolant Fan Upper Shroud Replacement (6.6L) .
  2. If equipped, remove the auxiliary generator. Refer to Auxiliary Generator Replacement .
  3. Remove the glow plug module and bracket. Refer to Glow Plug Control Module Replacement .
  4. Remove the injector/glow plug wire harness retaining bolt at lower upper valve cover.
  5. Disconnect the left engine wiring harness connector.
    6. Fig 1: Identifying Engine Wiring Harness Bracket Bolts
    GM1732378Courtesy of GENERAL MOTORS CORP.
  6. Remove the engine wiring harness to bracket bolt, the 2 engine wiring harness bracket to upper valve cover bolts and remove the bracket (1).
    7. Fig 2: View Of Left Fuel Injector Pipes
    GM1335608Courtesy 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.