Intake Manifold (Lower): Installation

1. Ensure sealing surfaces and bolt threads and holes are clean. Apply GM Sealant (12345336) at end of seals on cylinder block. Install lower manifold and gaskets. Coat bolt threads with thread locking compound.
2. Tighten all lower intake manifold retaining bolts in sequence to specification. On "F" body, see Fig 1. On all except "F" body, see Fig 2. See TORQUE SPECIFICATIONS . Lubricate fuel rail "O" rings with engine oil. To complete installation, reverse removal procedure. Fill and bleed cooling system. See COOLING SYSTEM BLEEDING .

Fig 1: Lower Intake Manifold Bolt Tightening Sequence - "F" Body

Courtesy of GENERAL MOTORS CORP.

Fig 2: Lower Intake Manifold Bolt Tightening Sequence - Except "F" Body (VIN "K" Shown, VIN "1" Is Similar)

Courtesy of GENERAL MOTORS CORP.