WARNING: This page is about a different car, the 2009 GMC Envoy and 2009 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Locating Camshaft Position Sensor Electrical Connector
Courtesy of GENERAL MOTORS CORP.
Remove the camshaft position (CMP) sensor electrical connector (1).