GM Service Manual Online
For 1990-2009 cars only

    Object Number: 2017137  Size: SH
  1. Install cylinder block water drain cock sub-assembly.
  2. Apply Three Bond 1344 or equivalent adhesive (1) to the threads of the drain cock.
  3. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 2017140  Size: SH

    Note: 

       • Do not rotate the drain cock more than 1 revolution (360 degrees) after tightening it to the specified torque.
       • Install the water drain cock within 3 minutes after applying seal packing.
       • Do not start the engine for at least 2 hours after installing the water drain cock.

  4. Install the water drain cock and tighten to 20 N·m (15 lb ft).
  5. Install the water drain cock plug (1) to the engine block and tighten to 13 N·m (9 lb ft).

  6. Object Number: 2017142  Size: SH
  7. Install the ventilation valve sub-assembly.
  8. Apply Three Bond 1324 or equivalent adhesive (1) to the threads of the ventilation valve.

  9. Object Number: 2017075  Size: SH

    Note: 

       • Install the crankcase within 3 minutes after applying seal packing.
       • Do not start the engine for at least 2 hours after installing the ventilation valve.

  10. Install the ventilation valve (1) and tighten to 20 N·m (15 lb ft).

  11. Object Number: 2016809  Size: SH

    Note: 

       • Remove any oil from the contact surface.
       • Make sure that the gasket is installed in the correct direction.

  12. Install cylinder head gasket.
  13. Place a new gasket on the cylinder block surface with the Lot No. stamp (1) facing upward.
  14. Note: The cylinder head bolts are tightened in 2 progressive steps.

  15. Install the cylinder head assembly.
  16. Apply a light coat of engine oil to the bolt threads and the area beneath the bolt heads that come in contact with the washers.
  17. Install the bolts and plate washers to the cylinder head.
  18. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 2016811  Size: SH
  19. Using several passes, with a 10 mm bi-hexagon wrench, uniformly install and tighten the 10 cylinder head set bolts and plate washers in the order shown and tighten to 49 N·m (36 lb ft).

  20. Object Number: 2016813  Size: SH
  21. Mark the front side of the cylinder head bolts with paint.
  22. Retighten the cylinder head bolts an additional 90 degrees, then once more 45 degrees as shown in the illustration.
  23. Check that the paint mark is now at a 135 degrees angle to the front.