Looking for the location of the camshaft positioning sensor on a 2009 buick lucerne

Hello, this code does not indicate a faulty sensor. Rather, it indicates that testing is required in the system of the camshaft position measurement. This code can come on because oil is low or really dirty, for example. It can come on due to engine timing concerns. It can come on due to camshaft position solenoid valve issues - either clogged with debris or non-functional. Hands on testing is needed. Do not simply try to replace a sensor -- you'll find that almost certainly it's a waste of money. www.repairpal.com/repair-shops