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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2002EXPRESS 1/2 TON VAN V6-4.3L VIN WREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMSPARK PLUGSERVICE AND REPAIRSPARK PLUG REPLACEMENT
2002 Chevrolet Express 1/2 Ton Van V6-4.3L VIN W
Spark Plug Replacement
2002 Chevrolet Express 1/2 Ton Van V6-4.3L VIN WSECTION 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. Properly position each spark plug washer.
2. Inspect each spark plug gap. Adjust each plug as needed.
Specification
Spark plug gap: 1.524 mm (0.060 in).
3. Hand start the spark plugs in the corresponding cylinders.
NOTE: Refer to Fastener Notice in Service Precautions.
4. Tighten the spark plugs.
Tighten
^ 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).
5. Install the spark plug wires.
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. Properly position each spark plug washer.
2. Inspect each spark plug gap. Adjust each plug as needed.
Specification
Spark plug gap: 1.524 mm (0.060 in).
3. Hand start the spark plugs in the corresponding cylinders.
NOTE: Refer to Fastener Notice in Service Precautions.
4. Tighten the spark plugs.
Tighten
^ 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).
5. Install the spark plug wires.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.