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

    • Engine Oil Level Sensor has been deleted completely in 2004
    • Timing Chain Tensioner has been added

Torque Values and/or Fastener Tightening Strategies

Addition of timing tensioner bolt torque

Changed Engine Specifications

No changes for 2004.

New Sealants and/or Adhesives

No new sealants or adhesives for 2004.

Disassembly and Assembly Procedure Revisions

Timing chain disassembly and assembly procedures changed due to the addition of the timing chain tensioner.

Engine Mechanical Diagnostic Procedure Revisions

No changes for 2004.

New Special Tools Required

    • J 45059 Angle Meter has been added
    • J 36660-A Torque Angle Meter has been deleted for 2004