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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 INSTRUCTIONSIGNITION COIL 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: View Of Spark Plug Wires & Retainers
    GM1949973Courtesy of GENERAL MOTORS CORP.
  1. Remove the engine cover. Refer to Engine Cover Replacement .
  2. Disconnect the chassis fuel feed pipe quick connect fitting from the engine fuel feed pipe. Refer to Metal Collar Quick Connect Fitting Service .
    3. IMPORTANT: Note the routing of the spark plug wires prior to disconnecting the wires from the ignition coil.
  3. Disconnect the spark plug wires (1) from the ignition coil.
  4. Remove the spark plug wire retainer (2) from the ignition coil bracket.
  5. Reposition the spark plug wires out of the way.
    6. Fig 2: Exploded View Of Electrical Connector
    GM1949972Courtesy of GENERAL MOTORS CORP.
  6. Disconnect engine wiring harness electrical connector (1) from the ignition coil.
    7. Fig 3: Identifying Ignition Coil & Bolts
    GM1949974Courtesy of GENERAL MOTORS CORP.
  7. Remove the ignition coil bolts (1) and ignition coil (2) from the bracket.
    8. Fig 4: Identifying lower ignition coil bracket bolts
    GM1949975Courtesy of GENERAL MOTORS CORP.
  8. If required, remove the lower ignition coil bracket bolt (3).
  9. Remove the engine wiring harness ground terminal from the ignition coil bracket.
  10. Remove the upper ignition coil bracket bolts (1) and bracket (2).
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.