GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2002 🢒 Grand Prix 🢒 Engine 🢒 Engine Mechanical - 3.1L 🢒 Exhaust Manifold Installation - Left Side

    Object Number: 862489 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.

  1. Install the exhaust manifold studs.

    2. Tighten
    Tighten the exhaust manifold studs to 18 N·m (13 lb ft).

  2. Install the exhaust manifold gasket.
  3. Install the exhaust manifold.
  4. Install the exhaust manifold nuts in sequence.

    5. Tighten
    Tighten the exhaust manifold nuts in sequence to 16 N·m (12 lb ft).

  5. Install the left side spark plugs.

    6. Tighten

        • Tighten the spark plugs to 27 N·m (20 lb ft) when installing spark plugs into a new cylinder head.
        • Tighten the spark plugs to 15 N·m (13 lb ft) when re-installing after initial installation.

    Object Number: 60831 Size: SH
  6. Install the exhaust manifold heat shield.
  7. Install the exhaust manifold heat shield bolts.

    8. Tighten
    Tighten the exhaust manifold heat shield bolts to 10 N·m (89 lb in).