Air Intake System Description. GMC Truck GMC K Sierra

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC K Sierra - 4WD 🢒 Engine 🢒 Engine Controls - 4.8L, 5.3L, and 6.0L 🢒 Air Intake System Description

Air Induction Components


(1)	Clamp
(2)	Air Duct
(3)	Clamp
(4)	MAF/IAT Sensor
(5)	Air Cleaner Assembly
(6)	Air Restriction Indicator

The air cleaner assembly is remotely mounted. The air intake system draws outside air through the side of the air cleaner assembly (4) and filter element of the forward mounted air cleaner. The air is then routed through the MAF sensor (3) and then into the throttle body to the intake manifold. The air is then directed into the intake manifold runners, through the cylinder heads and into the cylinders.

Air Cleaner Housing


(1)	Restriction Indicator
(2)	MAF/IAT Sensor
(3)	Seal with Clamp
(4)	Air Cleaner Housing Top Cover
(5)	Air Cleaner Element
(6)	Air Cleaner Housing
(7)	Air Inlet
(8)	Air Cleaner Housing Top Cover Fasteners

If the Mass Air Flow (MAF) sensor is installed backwards, the system will go rich. An arrow (2) cast into the plastic portion of the sensor indicates proper air flow direction. The arrow must point toward the engine.

Air Cleaner Restriction Indicator


(1)	Reset Button
(2)	Window

The air cleaner restriction indicator is located on the air cleaner assembly between the air filter and the Mass Air Flow (MAF) sensor.

If the area inside of the clear section is green, no air filter service is required. If the area inside the clear section is orange and Change Air Filter appears, replace the air filter.