Valve Lifter Oil Manifold Removal

WARNING: This page is about a different variant/trim than selected.

Fig 1: Identifying Manifold Lift Caution

Courtesy of GENERAL MOTORS CORP.

Do not lift the manifold assembly by the electrical lead frame.

Fig 2: View Of Valve Lifter Oil Manifold & Bolts

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Remove the valve lifter oil manifold bolts (506).

IMPORTANT: Do not allow dirt or debris to enter the oil passages of the manifold. Plug, as required.

Remove the valve lifter oil manifold (451).

Fig 3: View Of Eight Gasket Retaining Straps

Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Remove only the outer gasket from the manifold. Do not disassemble any of the internal components of the manifold in an attempt to remove the 8 inner sealing gaskets. If the inner gaskets are cut or damaged, replace the manifold as an assembly. Only use a wire-cutter type tool in order to minimize the amount of debris. Do not use a rotary-type cutting tool on the retaining straps.

Identify the 8 gasket retaining strap locations.

Fig 4: Cutting Retaining Straps

Courtesy of GENERAL MOTORS CORP.

Using a wire-cutter type tool, snip the 8 retaining straps of the outer gasket.

Fig 5: Valve Lifter Oil Manifold Gasket

Courtesy of GENERAL MOTORS CORP.

Remove the outer gasket (556) from the manifold.