New Product Information 6.2L LS9
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 6.2L LS9 liter engine utilize metric threads. |
| • | The LS9 connecting rod bolts have a unique torque and angle tightening value. |
| • | The LS9 M12 cylinder head bolts have a unique torque and angle tightening value. |
New Sealants and/or Adhesives
Sealers and adhesives for the LS9 engine have been identified. Refer to
Adhesives, Fluids, Lubricants, and Sealers.
Changed Engine Specifications
An engine mechanical specifications table has been added for the LS9 application. Refer to
Engine Mechanical Specifications.
Disassembly and Assembly Procedure Revisions
A variety of new repair procedures have been developed to support the new design supercharger assembly.
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
Strategy Based Diagnosis or
Diagnostic Starting Point - Engine Mechanical.
New Special Tools Required
| • | J 35908 Oil Filter Wrench
has been identified for removal and installation of the UPF48R oil filter. |
| • | EN 48853 Front Cover Alignment Tool
has been developed to align the front cover. |
| • | J 41478-A Seal Installer has been developed for crankshaft front oil seal installation. |
| • | J 41479-2B Rear Seal Installer Cone has been developed for crankshaft rear oil seal installation. |
| • | EN 49102 Bearing Cap Removal Tool
has been developed for main bearing cap removal. |
| • | EN 48898 Lifting Fixture
has been developed to assist the technician in lifting the supercharger assembly during removal and installation. |
| • | EN 48974 EGR Cooler Pressure Test Adapter
and
J 46091 Charge Air Cooler Tester
are used for pressure testing
the supercharger intercooler assembly. |
| • | J 41665-A Crankshaft Balancer and Sprocket Installer has been developed for balancer and crankshaft sprocket installation. |
Refer to
Special Tools.
A Component Comparison from the Previous Year
Production design engines will use a rivet-type plug replacing the coolant air bleed covers located at the top rear of each cylinder head. To properly repair a leaking plug, remove cylinder head from the engine, remove the plug from the cylinder head and
install first design coolant air bleed cover and bolt.
New Product Information 6.2L LS3
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 LS3 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. |
New Sealants and/or Adhesives
Sealers and adhesives, as required, are identified within the specific service procedures. Refer to
Adhesives, Fluids, Lubricants, and Sealers.
Disassembly and Assembly Procedure Revisions
No new disassembly or assembly procedure revisions.
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
Front cover alignment tool
EN-48853
is required to align the front cover during the installation procedure.
A Component Comparison from the Previous Year
Production engines use a rivet-type plug replacing the coolant air bleed covers located at the top rear of each cylinder head. To properly repair a leaking plug, remove cylinder head from the engine, remove the plug from the cylinder head and
install first design coolant air bleed cover and bolt.
New Product Information 7.0L LS7
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 LS7 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. |
Changed Engine Specifications
A new design dual tank dry-sump larger capacity oil tank is used for LS7 and LS9 applications. Engine oil fill capacity is increased. Refer to
Engine Mechanical Specifications.
New Sealants and/or Adhesives
Sealers and adhesives, as required, are identified within the specific service procedures. Refer to
Adhesives, Fluids, Lubricants, and Sealers.
Disassembly and Assembly Procedure Revisions
A new design dual tank dry-sump larger capacity oil tank is used for LS7 and LS9 applications.
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
| • | Front cover alignment tool
EN-48853 Front Cover Alignment Tool
is required to align the front cover during the installation procedure. |
| • | J 35908 Oil Filter Wrench
has been identified for removal and installation of the UPF48R oil filter. |
A Component Comparison from the Previous Year
| • | Production engines use a rivet-type plug replacing the coolant air bleed covers located at the top rear of each cylinder head. To properly repair a leaking plug, remove cylinder head from the engine, remove the plug from the cylinder head and install
first design coolant air bleed cover and bolt. |
| • | A new crankshaft balancer bolt is used that requires a four step tightening process. |
| • | A new design dual tank dry-sump larger capacity oil tank is used for LS7 and LS9 applications. |
