Possible causes – Dirty Oil– Engine mechanical problems– Faulty camshaft position sensor– Faulty crankshaft position sensor– Timing belt jumped Tech description There is a factory service bulletin for the following Chevrolet models: 2004-2009 Chevrolet TrailBlazer2004-2009 Chevrolet Colorado2004-2009 Chevrolet TrailBlazer, Colorado Factory Service Bulletin OBDII Code P0017 Symptoms – Engine Light ON (or Service Engine Soon…