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Home >> Cadillac >> 2009 >> CTS Base, 3.6 7, RWD, Automatic >> Repair and Diagnosis >> Engine Mechanical >> Engine Exhaust System >> Repair Instructions >> Exhaust System Replacement (LP1) >> Installation Procedure

Installation Procedure

  1. Install the left bank and the right bank HO2S to the exhaust system. Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 .
    2. Fig 1: View Of Exhaust System
    GM772373Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Exhaust System Inspection Caution .
    CAUTION: Refer to Flex Decoupler Caution .
  2. With the aid of an assistant, raise the exhaust system to the body insulators and to the catalytic converters.
  3. Install the muffler hanger rods to the muffler insulators. Refer to Exhaust System Insulator, Hanger, Bracket Replacement .
    4. Fig 2: Identifying Muffler Pipes At Left & Right Side Catalytic Converters
    GM1224063Courtesy of GENERAL MOTORS CORP.
  4. Position the exhaust pipe to the catalytic converts.
    5. CAUTION: Refer to Fastener Caution .
  5. Install the catalytic converter to exhaust pipe nuts and tighten to 17 N.m (13 lb ft).
    6. Fig 3: View Of Floor Panel Tunnel Brace
    GM772383Courtesy of GENERAL MOTORS CORP.
  6. Install the floor panel tunnel brace to the floor panel.
  7. Install the floor panel tunnel brace bolts and tighten to 25 N.m (18 lb ft).
    8. Fig 4: View Of HO2S Electrical Connector & Sensor (Bank 1 Shown, Bank 2 Similar)
    GM1201222Courtesy of GENERAL MOTORS CORP.
  8. Connect the left and right bank 2 HO2S electrical connectors (bank 1 shown, bank 2 similar) to the harnesses.
  9. Install the HO2S wiring harnesses to the transmission case.
  10. Lower the vehicle.
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