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HOMESERVICE MANUALSCHEVROLET2006EXPRESS 1500 RWD V6-4.3L VIN XREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMSPARK PLUGSERVICE AND REPAIR
2006 Chevrolet Express 1500 RWD V6-4.3L VIN X

Spark Plug: Service and Repair

2006 Chevrolet Express 1500 RWD V6-4.3L VIN XSECTION Service and Repair


SPARK PLUG REPLACEMENT

REMOVAL PROCEDURE
1. Remove the spark plug wires.




2. Loosen each spark plug 1 or 2 turns.
3. Brush or air blast away any dirt from around the spark plugs.
4. Remove the spark plugs 1 at a time. Place each plug in a tray marked with the corresponding cylinder numbers.

INSTALLATION PROCEDURE




1. Inspect each spark plug gap. Adjust each plug as needed.

Spark plug gap: 1.524 mm (0.060 in).

2. Hand start the spark plugs in the corresponding cylinders.
3. Tighten the spark plugs.
- For used heads, tighten the spark plugs to 15 N.m (11 lb ft).
- For new aluminum heads, tighten the spark plugs to 20 N.m (15 lb ft).
- For new iron heads, tighten the spark plugs to 30 N.m (22 lb ft).

NOTE: Refer to Fastener Notice in Service Precautions.


4. Install the spark plug wires.
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.