2010-2014 CTS 3.0L. 2012-2015 CTS 3.6L. 2012-2014, 2017-2020 Impala 3.6L. 2014-2015 Impala Limited 3.6L. Remove the fuel pump access cover to access the old pump. Carefully detach the old high-pressure fuel pump and inspect surrounding components for wear.
