GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1998 🢒 Riviera 🢒 Engine 🢒 Engine Exhaust 🢒 Exhaust Crossover Replacement

Removal Procedure

    Object Number: 203882 Size: SH
  1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .

    2. Object Number: 42230 Size: SH
  2. Remove the air flow duct.
  3. Remove the bolts from the exhaust manifold.
  4. Remove the exhaust manifold.

Installation Procedure

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

    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 manifold bolts.

    3. Tighten
    Tighten the exhaust manifold bolts to 20 N·m (15 lb ft).

  3. Install the air flow duct.
  4. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .