Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2075 (ENGINE CONTROL SYSTEM & FUEL SYSTEM - 4.3L - REPAIR INSTRUCTIONS)REPAIR INSTRUCTIONSSPARK PLUG REPLACEMENTREMOVAL PROCEDURE

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6

Removal Procedure

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Removal Procedure

WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Spark Plug Wire Separators & Boots

Courtesy of GENERAL MOTORS CORP.

Remove the appropriate spark plug wire boot(s) (2) from the spark plug.
1. Twist the spark plug boot 1/2 turn.
2. Pull ONLY on the spark plug boot or use a tool designed for this purpose in order to remove the spark plug wire boot from the spark plug.

Fig 2: View Of Spark Plugs

Courtesy of GENERAL MOTORS CORP.

Loosen the spark plug 1 or 2 turns.
Brush or air blast away any dirt from around the spark plug.
Remove the spark plug. If removing more than 1 plug, place each plug in a tray marked with the corresponding cylinder number.

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.