Valve Lifter Oil Manifold Removal

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Valve Lifter Oil Manifold

Courtesy of GENERAL MOTORS CORP.

Do not lift the manifold by the electrical lead frame.

Fig 2: View Of Valve Lifter Oil Manifold

Courtesy of GENERAL MOTORS CORP.

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: Gasket Retaining Strap Locations

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 (1-8).

Fig 4: Retaining Strap

Courtesy of GENERAL MOTORS CORP.

Using a wire-cutter type tool, cut the 8 retaining straps.

Fig 5: View Of Outer Gasket

Courtesy of GENERAL MOTORS CORP.

Remove the outer gasket (556) from the manifold.