GM Service Manual Online
For 1990-2009 cars only

    Object Number: 823317  Size: SH

    Important: 

       • Tighten the NEW exhaust manifold bolts as specified in the service procedure. Improperly installed and/or leaking exhaust manifold gaskets may affect vehicle emissions and/or on-board diagnostic (OBD) II system performance.
       • The cylinder head exhaust manifold bolt hole threads must be clean and free of debris or threadlocking material.

  1. Apply a 5 mm (0.2 in) wide band of threadlock to the threads of the NEW exhaust manifold bolts. Refer to Adhesives, Fluids, Lubricants, and Sealers .
  2. Install the exhaust manifold gasket and exhaust manifold.
  3. Notice: Refer to Fastener Notice in the Preface section.

  4. Install the NEW exhaust manifold bolts.
  5. Tighten

    1. Tighten the exhaust manifold bolts first pass to 15 N·m (11 lb ft). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, and work toward the outside bolts.
    2. Tighten the exhaust manifold bolts final pass to 20 N·m (15 lb ft). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, and work toward the outside bolts.
  6. Using a flat punch, bend over the exposed edge of the exhaust manifold gasket at the front of the right cylinder head.

  7. Object Number: 823320  Size: SH
  8. Install the heat shield (2) and bolts (3).
  9. Tighten
    Tighten the heat shield bolts to 9 N·m (80 lb in).