GM Service Manual Online
For 1990-2009 cars only

Air Induction System (VIN K)


Object Number: 74279  Size: SH
(1)Throttle Body
(2)Air Intake Duct
(3)Intake Air Temperature (IAT) Sensor
(4)Air Cleaner/PCM Housing Assembly

Air Induction System (VIN 1)


Object Number: 74278  Size: SH
(1)Throttle Body
(2)Air Intake Duct
(3)Intake Air Temperature (IAT) Sensor
(4)Air Cleaner Element / PCM Housing Assembly

The air induction system provides contaminant and sound filtration of the outside air as it is drawn into the engine. A remotely mounted air cleaner prevents contaminants in the air from entering the engine. The air cleaner assembly also acts as a resonator to reduce air induction noise. The filtered air then enters the engine by flowing through the air intake duct, throttle body, into the intake manifold, through the cylinder head intake ports, and into the cylinders.