GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 45059 Angle Meter


    Object Number: 858190  Size: SH
  1. Install the dowel pins - cylinder head locator, if necessary.
  2. Install a new cylinder head gasket.

  3. Object Number: 858189  Size: SH
  4. Install the cylinder head.

  5. Object Number: 858188  Size: SH
  6. Install new cylinder head bolts.

  7. Object Number: 858332  Size: SH

    Notice: 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 new cylinder head bolts in the following sequence:
  9. Tighten

    1. Tighten the (12) long cylinder head bolts in sequence to 30 N·m (22 lb ft).
    2. Use J 45059 to tighten the cylinder head bolts in sequence an additional 155 degrees.
    3. Tighten the (2 Short) end bolts to 7 N·m (62 lb in).
    4. Use J 45059 to tighten the short cylinder head end bolts an additional 60 degrees.

    5. Tighten the (1 Long) end bolt to 7 N·m (62 lb in).
    6. Use J 45059 to tighten the long cylinder head end bolt an additional 120 degrees.