The engine air filter element in a 1st generation (2010, 2011, 2012, 2013, 2014, 2015 & 2016) GMC Terrain SUV should be cleaned at every oil change and replaced when dirty or at least every few years. The procedure and part numbers should be the same for the LAF 2.4L, LEA 2.4L, LF1 3.0L V6, LFW 3.0L V6, LFX and the 3.6L V6 engines.
2010-2016 GMC Terrain Engine Air Filter Replacement Guide
