Envoy 2WD V8-5.3L VIN M (2005)
Intake Manifold: Service and Repair
Valve Lifter Oil Manifold Replacement
Valve Lifter Oil Manifold Replacement
Removal Procedure
1. Remove the intake manifold.
2. Disconnect the electrical connector from the oil pressure sensor.
3. Remove the valve lifter oil manifold bolts (2).
4. Important: Do not allow dirt or debris to enter the oil passages of the manifold. Plug as required.
Remove the valve lifter oil manifold (1).
5. 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).