GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 872284  Size: SH

    Caution: Ensure that the vehicle is properly supported and squarely positioned. To help avoid personal injury when a vehicle is on a hoist, provide additional support for the vehicle on the opposite end from which the components are being removed.

    Caution: Heavy work gloves and eye protection must be worn when modifying the exhaust heat shield, and when removing and installing the intermediate exhaust pipe isolator. The exhaust heat shield edges are extremely sharp and contact with the edges could cause personal injury.

    Notice: Inspect the shields for cracks, tears, and missing fasteners. All shields must be firmly attached. Shields must be installed whenever removed for exhaust system or body repairs, etc. to prevent vehicle panel and fuel tank damage.

  1. Raise the vehicle squarely on a lift. Refer to lift instructions for positioning the vehicle.

  2. Object Number: 862038  Size: SH
  3. Remove the intermediate pipe-to-catalytic converter nuts at the converter and discard gasket.
  4. Remove the intermediate pipe isolator and lower the exhaust system to the fullest extent.

  5. Object Number: 877262  Size: SH

    Notice: Use extreme care when gringing off the rivet heads. Always install all the shields to insure against panel and fuel tank damage.

  6. Remove the heat shield rivets by grinding off the heads with a small grinder or by punching out the center of the rivet with a 3/32 in. punch. Use a 3/16 in. drill to remove the rivet head without damaging the retainer hole.

Installation Procedure


    Object Number: 877262  Size: SH
  1. Position the heat shields in place.

  2. Object Number: 872291  Size: SH

    Important: Install the circled rivets shown first to align the shield. The shields also overlap and share some common rivets.

  3. Install the heat shield rivets.
  4. Install the catalytic converter to intermediate pipe gasket.
  5. Install the 3 intermediate pipe to catalytic converter nuts.
  6. Tighten
    Tighten the intermediate pipe-to-converter nuts to 25 N·m (19 lb ft).

  7. Check the exhaust system for leaks.