Sierra 3500 4WD V8-6.6L DSL Turbo VIN 2 (2004)
31. Prior to removing the fuel injector pipes, use compressed air to blow any debris from between the injector line and fittings. Wipe the fittings clean
of debris.
32. Spray lithium grease, GM P/N 12346293 or equivalent, between the fuel injector line and fittings to assist in containing any debris during removal.
NOTE: DO NOT use compressed air to clean debris from the fuel injector inlet after the fuel line is removed. Using compressed air can allow debris
to enter the fuel injector inlet and damage the fuel injector.
33. Remove the left fuel injector pipes.
34. Remove the fuel rail bolts.
35. Remove the fuel rail and bracket.
INSTALLATION PROCEDURE
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners
requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints,
lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping
force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts
and systems.
