New Product Information for Cadillac CTS 2003
The purpose of New Product Information is to highlight important technical
changes from the previous model year.
Changes may include one 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
Torque values and fastener tightening strategies are carryover from
2001 L81.
Changed Engine Specifications
| • | Crankshaft stroke has been changed. |
| • | Cylinder bore has been changed. |
New Sealants and/or Adhesives
| • | A pipe sealant type material is used on the thermostat housing
bolts. |
| • | A new anaerobic gasket marker is used on the engine oil cooler
cover. |
| • | A new anaerobic gasket marker is used on the oil pan. |
Disassembly and Assembly Procedure Revisions
The majority of the disassembly and assembly procedures have been revised,
due to the newly designed engine assembly.
Engine Mechanical Diagnostic Procedure Revisions
A new Engine Compression Test procedure has been added using a Tech
2.
New Special Tools Required
J-43276 Clutch Pilot Bearing Remover
A Component Comparison from the Previous Year
| • | The 3.2 liter, LA3, and 2.6 liter, LY9, engines
have replaced the 3.0 liter, L81 engine. |
| • | Some of the new features include: |
| - | Cylinder bores have enlarged to 87.5 mm (3.45 in)
for the 3.2L and deceased to 83.2 mm (3.28 in) for the 2.6L. |
| - | Crankshaft stroke has been changed to 88 mm (3.47 in)
for the 3.2L and 79.6 mm (3.13 in) for the 2.6L. |
| - | The 3.2L has a forged steel crankshaft. |
| - | The 2.6L has pressed fit piston pins. |
| - | A new oil filter adapter that allows room for the close-coupled
catalytic converter. |
| - | The ECM is now located on the right side camshaft cover. |
| - | Multi-wall steel exhaust manifolds are used to decrease
loss of exhaust gas heat. |
| - | A new structural oil pan is used. |
| - | Secondary Air Injection has been removed on both engines. |
| - | Flywheel adapter and retainer has been deleted. |
| - | A new engine block heater is being used. |
| - | Timing belt idler pulley has been relocated, to minimize belt
noise. |
