Removal Procedure

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Engine Harness Electrical Connectors & Inlet Hose Clamp

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Remove the intake manifold. Refer to Intake Manifold Replacement (Except LH6, LMG, LY5, L76, LY2, LY6) or Intake Manifold Replacement (LH6, LMG, LY5 and L76) or Intake Manifold Replacement (LY2 and LY6) .
Disconnect the engine harness electrical connector (1) from the oil pressure sensor.

Fig 2: Valve Lifter Oil Manifold

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DO NOT lift the valve lifter oil manifold by the electrical lead frame.

Fig 3: Valve Lifter Oil Manifold

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Remove the valve lifter oil manifold bolts (2).
Remove the valve lifter oil manifold (1).

Fig 4: Gasket Retaining Strap Locations

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NOTE: 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 5: Retaining Strap

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

Fig 6: Identifying Valve Cover Outer Gasket

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Remove the outer gasket (1) from the valve lifter oil manifold.