Description:

Compatible with Buick Enclave 2009-2011; LaCrosse 2005-2014; Rendezvous 2005-2006; Cadillac SRX 2010-2014; XLR 2004-2005. Compatible with GMC Acadia 2009-2011; Terrain 2010-2014; Saturn Outlook 2009-2010; Cadillac CTS 2004; ELR 2014;. Compatible with Chevrolet Captiva Sport 2012; Equinox 2010-2014; Impala 2012-2013; Traverse 2009-2011; Volt 2011-2014; Impala Limited 2014. Position: Upstream and Downstream. Detect oxygen content in the exhaust gases to optimize emissions and fuel economy.