GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2001 🢒 Regal (China) 🢒 Engine 🢒 Engine Exhaust 🢒 Exhaust Seal Replacement

Removal Procedure
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

    2. Object Number: 375038 Size: SH
  2. Remove the exhaust manifold pipe nuts and springs from the exhaust manifold studs.

    3. Important: Suitably support the exhaust system where hangers are removed.

  3. Disconnect any hangers as necessary in order to reposition the exhaust system.
  4. Reposition the exhaust system.
  5. Remove the exhaust manifold pipe seal.
  6. Inspect all of the components for the following:
    7. • Cracks
    • Bends
    • Stripped threads
    • Corrosion damage
    • Leaks
    • Replace the components as necessary.

Installation Procedure

    Object Number: 375038 Size: SH
  1. Install the exhaust manifold pipe seal.
  2. Return the exhaust system to the proper position.
  3. Connect any hangers.

    4. 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.

  4. Install the springs and the exhaust manifold pipe nuts to the exhaust manifold pipe studs.

    5. Tighten
    Tighten the exhaust manifold pipe nuts to 30 N·m (22 lb ft).

  5. Remove the exhaust system support.
  6. Inspect the exhaust system for leaks and underbody contact.
  7. Lower the vehicle.