GM Service Manual Online
For 1990-2009 cars only

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

No revisions to the torque values and/or fastener tightening strategies.

Changed Engine Specifications

No revisions to the engine specifications.

New Sealants and/or Adhesives

No revisions to the sealers and adhesives.

Disassembly and Assembly Procedure Revisions

No revisions to the disassembly or assembly procedure.

Engine Mechanical Diagnostic Procedure Revisions

No revisions to the engine mechanical diagnostic procedure.

New Special Tools Required

No new special tools are required.

A Component Comparison from the Previous Year

Second 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.