This is the popular GM "credit card" or "cartridge style "MAF" or Mass Airflow Sensor. It is a new OEM unit.

Fits:

ALLURE 2010
LACROSSE (2010 - 2013)
RAINIER (2006 - 2007)
REGAL (2011 - 2012) 2.4L only 
CADILLAC SRX (2004 - 2011)
CADILLAC STS (2005 - 2010)
CADILLAC XLR (2006 - 2009)
CAMARO (2010 - 2013)
COBALT (2005 - 2010)
COLORADO (2007 - 2012)
CORVETTE (2006 - 2013)
EQUINOX (2010 - 2012)
HHR (2006 - 2011)
IMPALA (2010 - 2011)
MALIBU (2008 - 2013)
SPARK 2013
TRAILBLAZER (2006 - 2009)
GMC CANYON (2007 - 2012)
GMC ENVOY (2006 - 2009)
GMC TERRAIN (2010 - 2012)
HUMMER H3 (2007 - 2010)
HUMMER H3T (2009 - 2010)
ISUZU ASCENDER (2006 - 2008)
ISUZU I-290 (2007 - 2008)
ISUZU I-370 (2007 - 2008)
G5 (2007 - 2010)
G6 (2008 - 2010)
PURSUIT (2005 - 2006)
SOLSTICE (2006 - 2009)
SAAB 9-4X 2011
SAAB 9-7X (2006 - 2009)
SATURN AURA (2007 - 2009)
SATURN ION 2007 (does not fit Ion Redline)
SATURN SKY (2007 - 2010)
SATURN VUE (2008 - 2009)