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 MANUALSCHEVROLET2004TAHOE 2WD V8-4.8L VIN VREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSAIR FLOW METER/SENSORSERVICE AND REPAIR
2004 Chevrolet Tahoe 2WD V8-4.8L VIN V
Air Flow Meter/Sensor: Service and Repair
2004 Chevrolet Tahoe 2WD V8-4.8L VIN VSECTION Service and Repair
MASS AIR FLOW (MAF)/INTAKE AIR TEMPERATURE (IAT) SENSOR REPLACEMENT
REMOVAL PROCEDURE
IMPORTANT: Use care when handling the mass air flow/intake air temperature (MAF/IAT) sensor. Do not dent, puncture, or otherwise damage the honeycell located at the air inlet end of the MAF/IAT. Do not touch the sensing elements or allow anything including cleaning solvents and lubricants to come in contact with them. Use a small amount of a non-silicone based lubricant, on the air duct only, to aid in installation.
1. Remove the air cleaner outlet duct.
2. Pull out the gray connector position assurance (CPA) retainer.
3. Push down on the black clip in order to disconnect the MAF/IAT sensor electrical connector (4).
4. Loosen the MAF/IAT clamp.
5. Remove the MAF/IAT sensor from the air cleaner assembly.
INSTALLATION PROCEDURE
IMPORTANT: The embossed arrow on the MAF/IAT sensor indicates the proper air flow direction. The arrow must point toward the engine.
1. Locate the air flow direction arrow (2) on the MAF/IAT sensor.
2. Install the MAF/IAT sensor to the air cleaner assembly.
NOTE: Refer to Fastener Notice in Service Precautions.
3. Tighten the MAF/IAT clamp.
Tighten the clamp to 7 N.m (62 lb in).
4. Connect the MAF/IAT sensor electrical connector (4).
5. Push in the gray CPA retainer.
6. Install the air cleaner outlet duct.
REMOVAL PROCEDURE
IMPORTANT: Use care when handling the mass air flow/intake air temperature (MAF/IAT) sensor. Do not dent, puncture, or otherwise damage the honeycell located at the air inlet end of the MAF/IAT. Do not touch the sensing elements or allow anything including cleaning solvents and lubricants to come in contact with them. Use a small amount of a non-silicone based lubricant, on the air duct only, to aid in installation.
1. Remove the air cleaner outlet duct.
2. Pull out the gray connector position assurance (CPA) retainer.
3. Push down on the black clip in order to disconnect the MAF/IAT sensor electrical connector (4).
4. Loosen the MAF/IAT clamp.
5. Remove the MAF/IAT sensor from the air cleaner assembly.
INSTALLATION PROCEDURE
IMPORTANT: The embossed arrow on the MAF/IAT sensor indicates the proper air flow direction. The arrow must point toward the engine.
1. Locate the air flow direction arrow (2) on the MAF/IAT sensor.
2. Install the MAF/IAT sensor to the air cleaner assembly.
NOTE: Refer to Fastener Notice in Service Precautions.
3. Tighten the MAF/IAT clamp.
Tighten the clamp to 7 N.m (62 lb in).
4. Connect the MAF/IAT sensor electrical connector (4).
5. Push in the gray CPA retainer.
6. Install the air cleaner outlet duct.
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.