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

Air injection has been deleted.

Fastener Changes

No fastener changes for 2003.

Torque Values and/or Fastener Tightening Strategies

No torque value changes for 2003.

Changed Engine Specifications

A new Engine Mechanical Specifications chart has been inplemented into the 2003 service manual.

New Sealants and/or Adhesives

No new sealants and or adhesives for 2003.

Disassembly and Assembly Procedure Revisions

EGR and Pipe Removal and Installation has been added.

Engine Mechanical Diagnostic Procedure Revisions

    • Coolant in Combustion Chamber Diagnostic Procedure has been added.
    • Coolant in Engine Oil Diagnostic Procedure has been added.

New Special Tools Required

J 45299 Engine Preluber has been added.