Intake Manifold Installation - Lower (L36)

WARNING: This page is about a different car, the 2004 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Lower Intake Manifold Bolts

Courtesy of GENERAL MOTORS CORP.

Clean the lower intake manifold sealing surface using GM P/N 12346139 (Canadian P/N 10953463) or equivalent prior to installing any seals or gaskets.
Install the lower intake manifold gasket.
Install the lower intake manifold.
Apply threadlocker 272 GM P/N 12345493, (Canadian P/N 10953488) or the equivalent to the bolt threads.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install the lower intake manifold bolts.
Tighten: Tighten the lower intake manifold bolts in sequence to 15 N.m (11 lb ft).