K 1500 Yukon XL 4WD V8-8.1L VIN G (2001)
33. Remove the AIR pump pipe bolt from the cylinder head, if equipped.
34. Remove the AIR pump pipe, if equipped.
35. Remove the fuel pressure regulator vacuum hose.
36. If replacing the intake manifold, remove the fuel rail studs.
37. Remove the fuel rail.
38. Remove the intake manifold bolts.