GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 3049-A Valve Lifter Remover

Removal Procedure


    Object Number: 470994  Size: SH
  1. Remove the intake manifold. Refer to Intake Manifold Replacement .
  2. Remove the valve rocker arms and pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
  3. Remove the valve lifter guide retainer bolts and retainer.

  4. Object Number: 470996  Size: SH
  5. Remove the valve lifter guides.
  6. Important: Mark, sort, or organize the valve lifters and guides for installation in their original location.

  7. Remove the valve lifters.

  8. Object Number: 719128  Size: SH
  9. Some valve lifter may be stuck in their bore due to gum or varnish deposits, These lifters can be removed using J 3049-A .
  10. Clean and inspect the valve lifters. Refer to Valve Lifters and Guides Cleaning and Inspection in Engine Mechanical - 8.1L Unit Repair.

Installation Procedure

Important: If a new camshaft is installed, replace all the valve lifters.


    Object Number: 470996  Size: SH
  1. Coat the valve lifter rollers with lubricant GM U.S. P/N 12345501, Canada P/N 992704, or equivalent.
  2. Important: If reusing the valve lifters, install the lifters in their original location. The valve lifter guide retainer must contact all of the valve lifter guides. If the lifter guide retainer is bent, the valve lifter guide retainer must be replaced.

  3. Install the valve lifters.
  4. Install the valve lifter guides over the flats on the valve lifters, making sure the rollers of the valve lifters are properly aligned with the camshaft lobes.

  5. Object Number: 470994  Size: SH
  6. Install the valve lifter guide retainer.
  7. 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.

  8. Install the valve lifter guide retainer bolts.
  9. Tighten
    Tighten the valve lifter guide retainer bolts to 25 N·m (18 lb ft).

  10. Install the valve rocker arms and pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
  11. Install the intake manifold. Refer to Intake Manifold Replacement .