GM Service Manual Online
For 1990-2009 cars only

The purpose of New Product Information is to highlight or indicate important new features for the service community.

Changes may include one or more of the following items:

    • Torque values and/or fastener tightening strategies
    • Engine specifications
    • New sealants and/or adhesives
    • Disassembly and assembly procedures
    • Engine mechanical diagnostic procedures
    • Special tools required

New Sealants and/or Adhesives

    • U.S. and Canadian SPO part numbers
    • 3-Bond sealant P/N 97720043

New Features on the 6.6L diesel engine

    • Induction hardened deep skirt block
    • Nitrided crankshaft
    • Valve seat inserts
    • Integral oil cooler
    • Mechanical roller lifters

Engine Features

    • Aluminum crankcase
    • Fracture split connecting rods
    • Full floating piston pins
    • Dual thermostat
    • Common rail direct fuel injection
    • 4 valves per cylinder
    • Open vent PCV system with oil separator

New Special Tools Required

    • J 44639 Fuel Injector Puller
    • J 44640 Valve Stem Seal Installer
    • J 44641 Crankshaft Rear Oil Seal Remover
    • J 44642 Crankshaft Rear Oil Seal Installer
    • J 44643 Flywheel Holding Tool
    • J 44644 Crankshaft Front Oil Seal Remover
    • J 44645 Crankshaft Front Oil Seal Installer
    • J 44646 Valve Spring Compressor
    • J 45910 Fuel Injector Sleeve Remover/Installer