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 one or more of the following items:

    • A component comparison from the previous year
    • Fastener changes
    • 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

Component Comparison

New Manifold Absolute Pressure (MAP)/Barometric Pressure (BARO) sensors, retainer clips and bracket have been added on L67 engines only.

Fastener Changes

No fastener changes for 2004.

Torque Values and/or Fastener Tightening Strategies

No torque value changes for 2004.

Changed Engine Specifications

No specification changes for 2004.

New Sealants and/or Adhesives

No new sealants and or adhesives for 2004.

Disassembly and Assembly Procedure Revisions

No changes for 2004

Engine Mechanical Diagnostic Procedure Revisions

No revisions for 2004

New Special Tools Required

J 45059 Angle Meter has replaced the J 36660-A Torque Angle Meter in 2004.