GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 1998 🢒 Intrigue 🢒 Engine 🢒 Engine Cooling 🢒 Exhaust Crossover Replacement

Removal Procedure

    Caution: Before servicing any electrical component, the ignition and start switch must be in the OFF or LOCK position and all electrical loads must be OFF, unless instructed otherwise in these procedures. If a tool or equipment could easily come in contact with a live exposed electrical terminal, also disconnect the negative battery cable. Failure to follow these precautions may cause personal injury and/or damage to the vehicle or its components.

  1. Disconnect the battery ground (negative) cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  2. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .
  3. Remove the throttle body air inlet duct.

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

    6. Object Number: 153576 Size: MH
  6. Remove the exhaust crossover pipe bolts/studs.
  7. Remove the exhaust crossover pipe.
  8. Remove the exhaust crossover pipe seal.

Installation Procedure

    Object Number: 153576 Size: MH
  1. Install the exhaust crossover pipe seal to the exhaust crossover pipe at the right (rear) exhaust manifold connection.
  2. Install the exhaust crossover pipe.

    3. 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.

  3. Install the exhaust crossover pipe bolts/studs.

    4. Tighten
    Tighten the exhaust crossover pipe bolts/studs 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 exhaust crossover heat shield nuts to 20 N·m (15 lb ft).

  6. Install the throttle body air inlet duct.
  7. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .
  8. Connect the battery ground (negative) cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.