Remove the engine front cover studs-(1).
Remove the block heater cartridge, if equipped.
Remove the right knock sensor bolt.Remove the right knock sensor.
Remove the left knock sensor bolt.Remove the left knock sensor.
Remove the crankshaft position sensor bolt.Remove the crankshaft position sensor.
Remove the crankshaft position sensor O-ring, ifdamaged.
Remove oil jet bolts.Remove oil jets.
Remove the right front oil pan rail oil gallery expansionplug.
Remove the cylinder block-to-oil panalignment dowels.
Remove the M14 right side oil gallery threaded plug.
Remove the M14 right side coolant drain threaded plug.
Remove the M14 rear oil gallery threaded plug.
Remove the M14 left side coolant drain threaded plug.
Remove the M20 left side oil gallery threaded plug.
Remove the coolant expansion plugs.
Remove the cylinderblock-to-transmission alignmentdowels.
Remove the front oil gallery expansion plug.
Remove the cylinder block-to-cylinderhead alignment dowels.
#03-08-46-004N: Part Restriction and Ordering Process Information for OnStar Vehicle Communication Interface Modules (VCIM) (GMNA Only) - (Aug 30, 2013)
Subject:Part Restriction and Ordering Process Information for OnStar® Vehicle CommunicationInterface Modules (VCIM) (GMNA Only)Models: 2012-2014 GM Cars and TrucksAll Equipped with OnStar® RPO UE1 This bulletin has been revised to add the 2014 model year and update ESC contact information.Please ...