GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 59806  Size: SH
  1. Disconnect the battery negative cables from the batteries. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  2. Drain the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.
  3. Remove the engine cover from the vehicle. Refer to Engine Cover Replacement in Interior Trim.
  4. Remove the cylinder head from the engine block. Refer to Cylinder Head Replacement .
  5. Remove the retaining clamp and bolt from the engine block.

  6. Object Number: 59809  Size: SH
  7. Remove the guide plates from the engine block.

  8. Object Number: 309558  Size: SH

    Important: Some engines will have both standard and 0.010 inch oversize valve lifters. The oversize valve lifter will have a 10 etched on the side. The block will be stamped O.S. on the cast pad adjacent to the valve lifter bore and on the top rail of the cylinder case above the valve lifter bore.

  9. Remove the valve lifters from the engine block.

Installation Procedure

Notice: Prime the new valve lifters before installation. The valve lifters may be damaged if the valve lifters are dry when the engine is started.


    Object Number: 309558  Size: SH

    Important: The valve lifters must be installed in their original locations.

  1. Install the valve lifters into the engine block.

  2. Object Number: 59809  Size: SH

    Important: The straight edge of the guide plates and clamps face away from the cylinder.

  3. Install the guide plates in the engine block.

  4. Object Number: 59806  Size: SH

    Important: After all the clamps are installed, turn the crankshaft by hand two full revolutions, to ensure free movement of the valve lifters in the plate. If the engine will not turn over by hand, one or more of the valve lifters may be binding in the plate.

  5. 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.

  6. Install the valve lifter retainer and bolt in the engine block.
  7. Tighten
    Tighten the clamp bolt to 26 N·m (18 lb ft).

  8. Install the cylinder head to the engine block. Refer to Cylinder Head Replacement .
  9. Refill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.
  10. Change the oil filter and oil. Refer to Engine Oil and Oil Filter Replacement .
  11. Connect the battery negative cables to the batteries. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.