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 MANUALSCHEVROLET2002EXPRESS 1/2 TON VAN V6-4.3L VIN WREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSAIR FLOW METER/SENSORSERVICE AND REPAIR
2002 Chevrolet Express 1/2 Ton Van V6-4.3L VIN W
Air Flow Meter/Sensor: Service and Repair
2002 Chevrolet Express 1/2 Ton Van V6-4.3L VIN WSECTION Service and Repair
MASS AIR FLOW (MAF) SENSOR
REMOVAL PROCEDURE
1. Turn OFF the ignition.
2. Disconnect the mass air flow (MAF) sensor harness connector.
3. Loosen the clamps (1) on the MAF sensor.
4. Carefully remove the MAF sensor from the air intake ducts (5).
INSTALLATION PROCEDURE
IMPORTANT: Ensure that the MAF sensor flow arrows point away from the air cleaner assembly.
1. Install the MAF sensor (5) into the air intake ducts.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Tighten the clamps (1) on the MAF sensor.
Tighten
Tighten the clamps to 4 N.m (35 lb in).
3. Connect the MAF sensor harness connector.
REMOVAL PROCEDURE
1. Turn OFF the ignition.
2. Disconnect the mass air flow (MAF) sensor harness connector.
3. Loosen the clamps (1) on the MAF sensor.
4. Carefully remove the MAF sensor from the air intake ducts (5).
INSTALLATION PROCEDURE
IMPORTANT: Ensure that the MAF sensor flow arrows point away from the air cleaner assembly.
1. Install the MAF sensor (5) into the air intake ducts.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Tighten the clamps (1) on the MAF sensor.
Tighten
Tighten the clamps to 4 N.m (35 lb in).
3. Connect the MAF sensor harness connector.
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.