GM Mass Air Flow Sensor Part # 23256991. Fits 2010 - 2013 3.0L, 4.3L, 4.8L, 5.3L, 6.0L & 6.2L Engines.
New, never installed. Originally purchased to replace defective unit, but when the old unit was tested, it was fine. Payed $219.30 at dealer - see invoice picture.