Cylinder Head Installation - Left

Tools Required 

J 36660-A  Torque Angle Meter

1. Clean the cylinder head gasket surfaces on the engine block.
2. Inspect the cylinder head locator dowel pins for proper installation.

   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.
   Fig 1: Inspecting Cylinder Head Locator Dowel Pins Proper Installation

   Courtesy of GENERAL MOTORS CORP.

   Important:  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.
   Fig 2: Installing Cylinder Head Gasket

   Courtesy of GENERAL MOTORS CORP.
5. Install the cylinder head onto the engine block.

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

   Fig 3: Installing Cylinder Head

   Courtesy of GENERAL MOTORS CORP.
6. Apply sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent, to the threads of the cylinder head bolts.
7. Install the cylinder head bolts finger tight.
   Fig 4: Installing Cylinder Head Bolts

   Courtesy of GENERAL MOTORS CORP.
   CAUTION: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
8. Tighten the cylinder head bolts in sequence on the first pass.

   Tighten 

   Tighten the bolts in sequence on the first pass to 30 N.m (22 lb ft).

9. Use the J 36660-A  in order to tighten the cylinder head bolts in sequence on the final pass.

   Tighten 

   • Tighten the long bolts (1, 4, 5, 8, and 9) on the final pass in sequence to 75 degrees.
   • Tighten the medium bolts (12 and 13) on the final pass in sequence to 65 degrees.
   • Tighten the short bolts (2, 3, 6, 7, 10, and 11) on the final pass in sequence to 55 degrees.
     Fig 5: Tightening Cylinder Head Bolts In Sequence

     Courtesy of GENERAL MOTORS CORP.
10. Install the spark plug wire support and bolts.

    Tighten 

    Tighten the spark plug wire support bolts to 12 N.m (106 lb in).

    Fig 6: Installing Spark Plug Wire Support & Bolts

    Courtesy of GENERAL MOTORS CORP.
11. Measure the NEW spark plugs for the proper gap. Adjust the spark plug gap if necessary.

    Specification 

    Spark plug gap to 1.52 mm (0.060 in).

12. Install the spark plugs.

    Tighten 

    • Tighten the spark plugs for a USED cylinder head to 15 N.m (11 lb ft).
    • Tighten the spark plugs for the initial installation of a NEW cylinder head to 30 N.m (22 lb ft).
      Fig 7: Installing Spark Plugs

      Courtesy of GENERAL MOTORS CORP.
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 

    Tighten the engine coolant temperature gage sensor to 20 N.m (15 lb ft).

    Fig 8: Installing Engine Coolant Temperature Gage

    Courtesy of GENERAL MOTORS CORP.
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 

    Tighten the engine coolant temperature sensor to 20 N.m (15 lb ft).

    Fig 9: Installing Engine Coolant Temperature Sensor

    Courtesy of GENERAL MOTORS CORP.