New Product Information
The purpose of New Product Information is to highlight, or indicate, important product changes from the previous model year.

Changes may include 1 or more of the following items:

Torque values and/or fastener tightening strategies

Changed engine specifications

New sealants and/or adhesives

Disassembly and assembly procedure revisions

Engine mechanical diagnostic procedure revisions

New special tools required

A component comparison from the previous year

Torque Values and/or Fastener Tightening Strategies
All fasteners and threaded holes on the LS2 engine utilize metric threads.

Certain fasteners should not be used again. Bolts, studs, or other fasteners that must be replaced, will be called out in the specific service procedure.

A second design camshaft retainer and bolts are optional.

The camshaft sprocket is now retained to the front of the camshaft using a single bolt design with a torque and angle tightening strategy.

New Sealants and/or Adhesives
Sealers and adhesives, as required, are identified within the specific service procedures. Refer to Sealers, Adhesives, and Lubricants .

A new sealer has been identified for the oil pan to front cover and oil pan to rear housing sealing surfaces.

Disassembly and Assembly Procedure Revisions
A locking washer is now installed between the front face of the crankshaft sprocket and the rear face of the crankshaft balancer. The washer is designed to retain onto the rear face of the balancer. Refer to Disassembled Views , Crankshaft Balancer Removal and Crankshaft Balancer Installation .

Engine Mechanical Diagnostic Procedure Revisions
All diagnosis on a vehicle should follow a logical process. Strategy based diagnostics is a uniform approach for repairing all systems. The diagnostic flow may always be used in order to resolve a system condition. The diagnostic flow is the place to start when repairs are necessary. For a detailed explanation, refer to Diagnostic Starting Point - Engine Mechanical .

New Special Tools Required
Timing belt tensioner retaining pin EN 46330 is used to retain the timing chain tensioner during the installation procedure.

Oil pressure gage adapter EN-47971 is required for oil pressure testing. The new design oil filter with internal bypass valve has a larger diameter oil filter fitting.

A Component Comparison from the Previous Year
A locking washer is now installed between the front face of the crankshaft sprocket and the rear face of the crankshaft balancer. The washer is designed to retain onto the rear face of the balancer. Refer to Disassembled Views , Crankshaft Balancer Removal and Crankshaft Balancer Installation .

A second design camshaft retainer and bolts are optional.

The camshaft sprocket is now retained to the front of the camshaft using a single bolt design with a torque and angle tightening strategy.

A new design timing chain tensioner replaces the timing chain dampener.

The oil filter bypass valve is now internal to the oil filter.

A new design inverted-lip crankshaft rear oil seal is now used


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