GM Service Manual Online
For 1990-2009 cars only

Special Tools

J 45059 Angle Meter


    Object Number: 637586  Size: SH
  1. Install the dowel pins - cylinder head locator, if necessary.
  2. Install a new cylinder head gasket.

  3. Object Number: 637588  Size: SH
  4. Install the cylinder head.

  5. Object Number: 637587  Size: SH
  6. Install new cylinder head bolts.
  7. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 637685  Size: SH
  8. Tighten the new cylinder head bolts in the following sequence:
  9. 5.1. Tighten the (14) long cylinder head bolts in sequence to 30 N·m (22 lb ft).
    5.2. Use J 45059 meter to tighten the cylinder head bolts in sequence an additional 155 degrees.
    5.3. Tighten the (2 Short) end bolts to 7 N·m (62 lb in).

    Use J 45059 meter to tighten the short cylinder head end bolts an additional 60 degrees.

    5.4. Tighten the (1 Long) end bolt to 7 N·m (62 lb in).

    Use J 45059 meter to tighten the long cylinder head end bolt an additional 120 degrees.