BUICK/CHEVROLET/GMC: ENGINE IS MAKES RATTLING NOISE WHEN STARTING UP AND IS INTERMITTENT, AND IS HEARD IN CAMSHAFT POSITION ACTUATOR DUE TO ENGINE SHUT DOWN AND OIL PRESSURE NOT ALLOW TO CAMSHAFT POSITION ACTUATOR. MODELS 2011-2012 LACROSSE, REGAL, EQUINOX, ORLANDO, TERRAIN. *PE
