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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1371 (Engine Exhaust System) >> Repair Instructions >> Catalytic Converter Replacement (LV6 Engine) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise the vehicle. Support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the Heated Oxygen Sensor 2 (HO2S2). Refer to Heated Oxygen Sensor Replacement - Position 2 (FWD) or Heated Oxygen Sensor Replacement - Position 2 (AWD) in Engine Controls - 1.8L (LV6).
    3. Fig 1: Heated Oxygen Sensor (HO2S1), Exhaust Pipe Hanger, Springs And Bolts
    GM836332Courtesy of GENERAL MOTORS CORP.
  3. Remove the bolts securing the front pipe to the Three-Way Catalytic Converter (TWC).

    Remove the bolt and clamp securing the Three-Way Catalytic Converter (TWC) to the muffler/tail pipe assembly.

  4. Remove the hangers from the rear of the TWC (2).
  5. Remove the TWC from the vehicle.
  6. Clean the gasket and seal mating surfaces.
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