GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2008 🢒 SLS 🢒 Engine 🢒 Engine Mechanical - 2.8L, 3.0L, 3.2L, or 3.6L 🢒 Cylinder Head Disassemble

Special Tools

    • EN 46116 Valve Stem Seal Remover/Installer
    • EN 46117 Valve Stem Key Remover/Installer
    • EN 46119 Off-Vehicle Valve Spring Compressor Adapter
    • J 8062 Valve Spring Compressor - Head Off

    Object Number: 1210820 Size: SH

    Important: Ensure valve heads will not contact anything during the following step in order to avoid bending or damage.

  1. Using an appropriately sized deep socket and a plastic hammer, lightly tap on the valve spring retainer to loosen the valve keepers.

    2. Caution: Refer to Compressed Valve Spring Caution in the Preface section.


    Object Number: 1210825 Size: SH
  2. Compress the valve spring using the J 8062 and the EN 46119 .

    3. Object Number: 1210829 Size: SH
  3. Use the magnet of the EN 46117 in order to remove the valve keepers.
  4. Remove the valve spring compressor and the adapter.

    5. Object Number: 1210879 Size: SH
  5. Remove the valve spring retainer.
  6. Remove the valve spring.

    7. Object Number: 1210884 Size: SH
  7. Remove the valve.

    8. Object Number: 1210887 Size: SH

    Important: NEVER reuse a valve stem oil seal.

  8. Remove the valve stem oil seal using the EN 46116 and discard.
  9. Repeat these procedures for the remaining valves.

    10. Object Number: 1210891 Size: SH
  10. Remove the cylinder head oil gallery expansion plugs.

    11. Object Number: 1210901 Size: SH
  11. Remove the cylinder head coolant threaded plugs.