Sierra 2500 2WD V8-6.6L DSL Turbo (2007)
8. Loosen the left fuel rail fuel feed pipe fittings (1).
9. Remove the left fuel rail fuel feed 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.
Notice: DO NOT use compressed air to clean debris from the fuel injector inlet after the fuel line is removed. Using compressed air can allow
