Removal Procedure
- Remove the rocker arms, pushrods, and the pedestals. Refer to Valve Rocker Arm and Push Rod Replacement .
- Remove the lower intake manifold and gaskets. Refer to Lower Intake Manifold Replacement .
- Remove the valve guide retainer bolts.
- Remove the valve guide retainer.
- Remove the valve lifter guides.
- Remove the valve lifters.
- Clean and inspect the valve lifters and guides. Refer to Valve Lifters and Guides Cleaning and Inspection in the Engine Mechanical - 3.8L Unit Repair.
Important: Keep all of the valve train parts in order. Reinstall the valve train parts in their original locations and with the same mating surfaces as when removed.
Installation Procedure
- Dip the valve lifters in prelube GM P/N 12345501 (Canadian P/N 992704) or the equivalent.
- Install the valve lifters.
- Install the valve lifter guides.
- Install the valve guide retainer.
- Install the valve guide retainer bolts.
- Install the lower intake manifold and gaskets. Refer to Lower Intake Manifold Replacement .
- Install the valve rocker arms, pushrods, and the pedestals. Refer to Valve Rocker Arm and Push Rod Replacement .
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Tighten
Tighten the valve guide retainer bolts to 30 N·m (22 lb ft).
