Intake Manifold (Lower): Installation

WARNING: This page does not describe the selected car, but rather 24 other vehicles, including the 1997 Oldsmobile Bravada, 1997 GMC Sonoma, 1997 GMC Savana, 1997 GMC Safari, and 1997 GMC Pickup. However, it is still accessible from the selected car via links, so may be relevant.

Apply a 3/16" (5 mm) bead of RTV (GM P/N 1052289) or equivalent to 4 sealing corners of block. Extend bead 1/2" (13 mm) up each cylinder head. See Fig 1.
Apply Loctite(R) 242 (GM P/N 12345382) or equivalent to lower intake manifold bolt threads. Tighten bolts in sequence to specification. See Fig 2. See TORQUE SPECIFICATIONS table.

CAUTION: Always use NEW "O" rings when reconnecting fuel lines at rear of engine.

To complete installation, reverse removal procedure. Fill and bleed cooling system. See COOLING SYSTEM BLEEDING .

Fig 1: Applying RTV Sealant Before Installing Intake Manifold

Courtesy of GENERAL MOTORS CORP.

Fig 2: Lower Intake Manifold Bolt Tightening Sequence

Courtesy of GENERAL MOTORS CORP.