GM Service Manual Online
For 1990-2009 cars only

Special Tools

EN 45059 Torque Angle Sensor Kit

For equivalent regional tools, refer to Special Tools.


    Object Number: 2026771  Size: SH

    Note: Do not use any sealing material.

  1. Install the NEW cylinder head gasket to block (2) at the engine block (3).
  2. Install the cylinder head.
  3. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 2026728  Size: SH

    Note: Always use new cylinder head bolts.

  4. Install the 10  NEW cylinder head bolts.
  5. Tighten the 10 NEW cylinder head bolts in 3 passes:
  6. 4.1. First pass in sequence to 65 N·m(48 lb ft).
    4.2. Second pass in sequence to an additional 90 degrees using the EN 45059 angle sensor .
    4.3. Third pass in sequence to an additional 90 degrees using the EN 45059 angle sensor .