Sierra 3500 4WD V8-6.6L DSL Turbo VIN 2 (2004)
Fuel Rail: Service and Repair
Fuel Rail Assembly Replacement - Bank 2
FUEL RAIL ASSEMBLY REPLACEMENT - BANK 2
REMOVAL PROCEDURE
1. Disconnect the negative battery cables.
2. Remove the air cleaner outlet duct.
3. Remove the fuel injection control module (FICM).
4. Remove the fuel filter.
5. Remove the exhaust gas recirculation (EGR) cooler tube.
6. Remove the positive crankcase ventilation (PCV) hose/pipe.
7. Disconnect the fuel rail balance pipe from the fuel rails.
8. Remove the fuel rail balance pipe bolts.
9. Remove the fuel rail balance pipe.
10. 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.
11. 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.
12. Remove the fuel injector pipes.
