Cleaning Procedure

Clean the crankshaft balancer in solvent that is compatiblewith the rubber-(1).
Warning:Refer toSafety Glasses Warning.
Dry the crankshaft balancer with compressed air.Inspection Procedure
Inspect the crankshaft balancer for the following:Worn or damaged hub-to-crankshaftsurface-(1)Worn, grooved or damaged hub sealsurface-(2)
A crankshaft balancer hub seal surface with excessivescoring, grooves, rust or other damage must be replaced.
Worn, chunking or deteriorated rubber between the hub andpulley-(3)Damaged drive belt ribs-(4)Damaged webs-(5)Repair or replace the crankshaft balancer asnecessary.
Camshaft Cover Cleaning and Inspection Valvetrain Camshaft
Crankshaft and Bearing Cleaning and Inspection Engine Block Cylinder Block Crankshaft#10-08-46-001A: Radio Does Not Mute Enough When OnStar Turn-By-Turn Navigation Directions Are Announced (Increase Volume Setting or Request Soft Mute...
Subject:Radio Does Not Mute Enough When OnStar® Turn-by Turn Navigation Directions Are Announced(Increase Volume Setting or Request Soft Mute Feature Change Through OnStar® CustomerService)Models: 2009-2014 GM Cars and TrucksAll Equipped with OnStar® (RPO UE1)This bulletin has been revised to ad ...