GM Service Manual Online
For 1990-2009 cars only

Exhaust Manifold Replacement With LF8

Removal Procedure

  1. Remove the exhaust gas recirculation (EGR) pipe.
  2. Remove the front pipe. Refer to Front Pipe Replacement.
  3. Remove the turbocharger.
  4. Remove the exhaust manifold heat shield bolts and heat shields.

  5. Object Number: 1992079  Size: SH
  6. Remove the exhaust manifold nuts and studs (1-12) and any washers and spacers.
  7. Remove the exhaust manifold with the gasket from the vehicle.

Installation Procedure

  1. Position the exhaust manifold and gasket in the vehicle.

  2. Object Number: 1992079  Size: SH
  3. Install the exhaust manifold washers and spacers and the nuts and studs (1-12).
  4. Notice: Refer to Fastener Notice in the Preface section.

  5. Tighten the exhaust manifold nuts in the proper sequence shown in the graphic.
  6. Tighten

        • Tighten the nuts (7, 12) to 34 N·m (25 lb ft).
        • Tighten the nuts (1-6, 8-11) to 55 N·m (41 lb ft).
  7. Install the exhaust manifold heat shield nuts and bolts and heat shields.
  8. Install the turbocharger.
  9. Install the front pipe. Refer to Front Pipe Replacement.
  10. Install EGR pipe.