Installation Procedure

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Fig 1: Upper Intake Manifold Cover And Nut

Courtesy of GENERAL MOTORS CORP.

Install the upper intake manifold cover.
Install the upper intake manifold cover nut until snug

Fig 2: Brake Booster Vacuum Hose

Courtesy of GENERAL MOTORS CORP.

Install the brake booster vacuum hose to the intake manifold nipple.
Position the brake booster vacuum hose clamp at the intake manifold.
Install the intake manifold. Refer to Intake Manifold Replacement (RPOs LC9, LMG, LY5, L76) , Intake Manifold Replacement (RPOs LY2, LY6) , Intake Manifold Replacement (Except RPOs LY2, LY6, LC9, LMG, LY5) .