Valve Lifter Oil Manifold Removal

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Valve Lifter Oil Manifold Electrical Lead Frame Caution

Courtesy of GENERAL MOTORS CORP.

Do not lift the manifold by the electrical lead frame.

Fig 2: Valve Lifter Oil Manifold And Bolts

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: Outer Gasket

Courtesy of GENERAL MOTORS CORP.

Remove the outer gasket (556) from the manifold.