GM Service Manual Online
For 1990-2009 cars only

    Object Number: 2043981  Size: SH

    Important: 

       • When using the valve lifters (2 and 3) again, install the lifters (2 and 3) to their original locations.
       • If camshaft replacement is required, the valve lifters (2 and 3) must also be replaced.
       • Each of the 4 valve guide assemblies will contain 2 cylinder deactivation valve lifters (3) and 2 non-cylinder deactivation valve lifters (2).
       • With the lifters (2 and 3) and guides (1) correctly installed, cylinders 1, 4, 6, and 7 lifter bores will each contain 2 cylinder deactivation valve lifters (3).

  1. Lubricate the valve lifters (2 and 3) with clean engine oil.

  2. Object Number: 2043985  Size: SH
  3. Insert the valve lifters (3 and 4) into the lifter guides (5).
  4. • Align the flat area on the top of the non-cylinder deactivation management lifter (3) with the flat area in the lifter guide (5) bore. Push the lifter (3) completely into the guide (5) bore.
    • The cylinder deactivation lifters (4) are to be installed into the guide (5), with the notch in the guide (1) aligned with the raised area (2) of the lifter (4).

    Object Number: 2043980  Size: SH
  5. Lubricate the valve lifter bores in the cylinder block (3) with clean engine oil.
  6. Install the valve lifters and guide assembly (1) to the cylinder block (3).
  7. Notice: Refer to Fastener Notice in the Preface section.

  8. Install the valve lifter guide to cylinder block retaining bolts (2).
  9. Tighten
    Tighten the bolts to 10 N·m (89 lb in).