Sierra 1500 2WD V8-4.8L (2007)
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Lift evenly on both sides of the fuel rail until all injectors are removed from their bores.
Remove the fuel rail assembly.
27. Remove the fuel injector retainers (1).
28. Remove the fuel injectors (3) from the fuel rail.
29. Remove and discard the fuel injector upper and lower O-ring seals (2 and 4).
30. Remove the fuel rail crossover pipe retainer screws (2).
31. Remove the fuel rail crossover pipe retainers (3).
32. Remove the fuel rail crossover pipe (1) from the fuel rails.
33. Remove and discard the fuel rail crossover pipe O-ring seals (4).
34. Replace the left and/or right fuel rail as required.
Installation Procedure
