One problem related to blown head gasket has been reported for the 2012 GMC Terrain. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 GMC Terrain based on all problems reported for the 2012 Terrain.
While driving on highway the message came on losing oil pressure, shut engine off. By the time I was able to pull off the highway to the side the engine ceased up. Oil gasket blew off.