GM Service Manual Online
For 1990-2009 cars only

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:

    â€¢ Torque values and/or fastener tightening strategies
    â€¢ Changed engine specifications
    â€¢ New sealants and/or adhesives
    â€¢ Disassembly and assembly procedure revisions
    â€¢ Engine mechanical diagnostic procedure revisions
    â€¢ New special tools required
    â€¢ 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

    â€¢ Crankshaft stroke has been changed.
    â€¢ Cylinder bore has been changed.

New Sealants and/or Adhesives

    â€¢ A pipe sealant type material is used on the thermostat housing bolts.
    â€¢ A new anaerobic gasket marker is used on the engine oil cooler cover.
    â€¢ A new anaerobic gasket marker is used on the oil pan.

Engine Mechanical Diagnostic Procedure Revisions

A new Engine Compression Test procedure has been added using a Tech 2.