Envoy 2WD V8-5.3L VIN P (2004)
Mass Air Flow (MAF) Sensor: 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. Disconnect the MAF/IAT sensor electrical connector.
2. Loosen the clamps at the MAF/IAT sensor and the throttle body.
3. Remove the air cleaner outlet duct bolt.
4. Remove the air cleaner outlet duct.
5. Loosen the clamp attaching the MAF/IAT sensor to the air cleaner housing.
6. Remove the MAF/IAT sensor from the air cleaner housing.
INSTALLATION PROCEDURE
IMPORTANT: The embossed arrow on the MAF/IAT sensor indicates the proper air flow direction. The arrow must point toward the engine.
