GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1998 🢒 Bonneville 🢒 Engine 🢒 Engine Mechanical - 3.8L 🢒 Exhaust Crossover Installation

    Object Number: 42230 Size: SH
  1. Install the exhaust crossover.

    2. 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.

  2. Install the exhaust crossover studs to the right exhaust manifold.

    3. Tighten
    Tighten the studs to 20 N·m (15 lb ft).

  3. Install the exhaust crossover bolts to the left exhaust manifold.

    4. Tighten
    Tighten the bolts to 20 N·m (15 lb ft).


    Object Number: 153575 Size: SH
  4. Install the exhaust crossover heat shield.
  5. Install the exhaust crossover heat shield nuts.

    6. Tighten
    Tighten the nuts to 20 N·m (15 lb ft).