2009 Chevrolet Silverado 2500 HD Mass Air Flow Sensor

You can remove the air cleaner outlet duct, inspect the Throttle Body bore and the throttle plate for deposits, clean the throttle body bore and the throttle plate, install the air cleaner outlet duct and perform the Throttle Learn Procedure.

The procedure is to remove the intake manifold sight shield, disconnect the engine wiring harness electrical connector, remove the MAP Sensor retainer and remove the MAP sensor.

The procedure is to remove the Intake Manifold, reposition the brake booster vacuum hose clamp at the intake manifold, remove the brake booster vacuum hose, remove the upper intake manifold cover nut and remove the upper intake manifold cover.