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

The timing chain tensioner has been added.

Returnless fuel has been added on C/K and G/H platforms.

Torque Values and/or Fastener Tightening Strategies

Addition of timing tensioner bolt torque

Changed Engine Specifications

No changes for 2005.

New Sealants and/or Adhesives

No new sealants or adhesives for 2005.

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 2005.

New Special Tools Required

No changes for 2005.