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Exhaust System: Installation

  1. While exhaust system is on the floor, apply a soapy solution to the following in order to ease the installation of hangers:
    • The inner diameter of the front exhaust hanger.
    • The exhaust pipe hanger rod.
    • The inner diameter of the tail pipe hangers.
    • The tail pipe hanger rods.
  2. Press front exhaust hanger over exhaust pipe hanger rod. Place a NEW seal on left catalytic converter flange. Place a NEW gasket over right catalytic converter studs.
  3. With the aid of an assistant, raise exhaust system into position, aligning exhaust pipe flanges with studs located in rear of catalytic converters. See Fig 2 . Finger tighten 4 nuts to catalytic converter studs.
  4. Press tail pipe hangers over tail pipe hanger rods. Press front exhaust hanger over rear suspension hanger rod
  5. Tighten 2 left catalytic converter nuts previously installed. Tighten catalytic converter nuts to specification. See TORQUE SPECIFICATIONS  . Tighten 2 right catalytic converter nuts previously installed. Tighten catalytic converter nuts to specification.
  6. Position floor panel tunnel brace to floor panel. See Fig 1 . Install 2 bolts securing floor panel tunnel brace to floor panel. Tighten floor panel tunnel brace bolts to specification. Lower vehicle.
    Fig 1: Removing/Installing Floor Pan Tunnel Brace
    G00232140Courtesy of GENERAL MOTORS CORP.
    Fig 2: Removing/Installing Exhaust System
    G00232141Courtesy of GENERAL MOTORS CORP.