Clean the flywheel in solvent.
Warning:Refer toSafety Glasses Warning.
Dry the flywheel with compressed air.Inspect the flywheel for the following:Damaged ring gear teethStress cracks around theflywheel-to-crankshaft bolt holelocationsWeight saving holes#PIT5236: Diagnostic Tip: OnStar Module Does Not Support All B101D Symptom Codes - (Oct 3, 2013)
Subject:Diagnostic Tip: OnStar Module Does Not Support All B101D Symptom CodesModels: 2011 - 2014 All GM Passenger Car and Light Duty Trucks with RPO UE1(Except 2011-2013 Chevrolet Corvette, 2011-2012 Chevrolet Colorado, 2011-2012 GMCCanyon)The following diagnosis might be helpful if the vehicle ex ...