Sierra Classic 2500 4WD V8-8.1L (2007)
Intake Air Temperature Sensor: Service and Repair
MASS AIRFLOW SENSOR/INTAKE AIR TEMPERATURE SENSOR REPLACEMENT
REMOVAL PROCEDURE
IMPORTANT: Use care when handling the mass air flow(MAF)/intake air temperature (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 intake air resonator.
2. Disconnect the MAF/IAT sensor electrical connector (3).
3. Loosen the MAF/IAT clamp.
4. 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.
