GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2009 🢒 Sierra Denali 🢒 Engine 🢒 Engine Mechanical - 4.3L 🢒 Cylinder Head Installation - Left Side

Special Tools

J 45059 Angle Meter

For equivalent regional tools, refer to Special Tools.


    Object Number: 859876 Size: SH
  1. Clean the cylinder head gasket surfaces on the engine block.
  2. Inspect the cylinder head locator dowel pins for proper installation.

    3. The installation height should be 6.3-6.5 mm (0.248-0.256 in) (a).

  3. Clean the cylinder head gasket surfaces on the cylinder head.

    4. Object Number: 334299 Size: SH

    Note: Do not use any type sealer on the cylinder head gasket, unless specified.

  4. Install the NEW cylinder head gasket in position over the cylinder head locator dowel pins.

    5. Object Number: 480536 Size: SH
  5. Install the cylinder head onto the engine block.

    6. Guide the cylinder head carefully into place over the dowel pins and the cylinder head gasket.


    Object Number: 480533 Size: SH
  6. Apply sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent, to the threads of the NEW cylinder head bolts.
  7. Install the NEW cylinder head bolts finger tight.

    8. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 5132 Size: SH
  8. Tighten the cylinder head bolts in sequence on the first pass. Tighten the bolts in sequence on the first pass to 30 N·m (22 lb ft).
  9. Use the J 45059 meter in order to tighten the cylinder head bolts in sequence on the final pass.
    10. 9.1. Tighten the long bolts (1, 4, 5, 8, and 9) on the final pass in sequence to 75 degrees.
    9.2. Tighten the medium bolts (12 and 13) on the final pass in sequence to 65 degrees.
    9.3. Tighten the short bolts (2, 3, 6, 7, 10, and 11) on the final pass in sequence to 55 degrees.

    Object Number: 328588 Size: SH
  10. Install the spark plug wire support and bolts and tighten to 12 N·m (106 lb in).

    11. Object Number: 328582 Size: SH
  11. Measure the spark plugs for the proper gap.

    12. Adjust the spark plug gap if necessary.

    Specification
    Spark plug gap to 1.52 mm (0.060 in).

  12. Install the spark plugs and tighten to 15 N·m (11 lb ft).

    13. Object Number: 387767 Size: SH
  13. If reusing the engine coolant temperature gage sensor, if applicable, apply sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent, to the threads of the engine coolant temperature gage sensor.
  14. Install the engine coolant temperature gage sensor, if applicable. Tighten the engine coolant temperature gage sensor to 20 N·m (15 lb ft).

    15. Object Number: 387769 Size: SH
  15. If reusing the engine coolant temperature sensor, if applicable, apply sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent, to the threads of the engine coolant temperature gage sensor.
  16. Install the engine coolant temperature sensor, if applicable. Tighten the engine coolant temperature sensor to 20 N·m (15 lb ft).