GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 43263 Valve Spring Compressor
    • J 43268 Guide Bridge Installer

    Object Number: 1682317  Size: SH

    Important: Ensure that the 12 valve bridge guides are pressed into place to a final height of (a) 37-38 mm (1.46-1.50 in).

  1. Install the valve bridge guides in the cylinder head with J 43268 .
  2. 1.1. Apply engine oil to the valve bridge guide outer circumference.
    1.2. Attach the valve bridge guide installer to the bridge guide.
    1.3. Use a brass hammer to tap the guide into position from the cylinder head upper face.
  3. Apply clean engine oil to the valve stem.
  4. Insert the valve into the proper port.
  5. Install the valve spring seat to the cylinder head.

  6. Object Number: 736672  Size: SH

    Important: The painted part of the valve springs, close spaced, coils must be towards the cylinder head.

  7. Install the valve spring with the retainer.
  8. Compress the valve springs, using the J 43263 .
  9. Important: Apply a small amount of grease to the end of the valve. This will help retain the valve keys in position while releasing tool J 43263 .

  10. Apply a small amount of grease on the end of the valve stem before installing in the valve guide.
  11. Install the valve keys to the valve stem.
  12. Important: Make sure that the valve keys are installed properly before proceeding to the next set of valves.

  13. Slowly release the J 43263 .