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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 231 (Engine Exhaust System) >> Repair Instructions >> Catalytic Converter Replacement (Dual Exhaust - Right) >> Removal Procedure

Removal Procedure

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise the vehicle.
  2. Disconnect the oxygen sensor connectors.
  3. Remove the exhaust hanger bolts and hanger from the vehicle.
    WARNING: In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool.
    WARNING: Always wear protective goggles and gloves when removing exhaust parts as falling rust and sharp edges from worn exhaust components could result in serious personal injury.
  4. Remove the nuts retaining the exhaust pipe flange to the catalytic converter pipe.
  5. Loosen the nut retaining the exhaust pipe clamp to the muffler.
  6. Remove the exhaust pipe and flange gasket.
    Fig 1: Removing Nuts Retaining Exhaust Pipe Flange To Catalytic Converter Pipe
    G02080469Courtesy of GENERAL MOTORS CORP.
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