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Home >> Cadillac >> 2006 >> CTS V >> Repair and Diagnosis >> Engine Mechanical >> Engine Exhaust System >> Repair Instructions >> Exhaust System Replacement (LP1) >> Installation Procedure

Installation Procedure

    Fig 1: View Of Exhaust System Components
    GM786659Courtesy of GENERAL MOTORS CORP.
  1. Install the HO2S to the exhaust system. Refer to Heated Oxygen Sensor (HO2S) Replacement Bank 1 Sensor 2 and Heated Oxygen Sensor (HO2S) Replacement Bank 2 Sensor 2 in Engine Controls - 2.8L.
  2. Install the muffler rear hangers (2) to the muffler(s).
    3. Fig 2: Lowering Exhaust System
    GM772373Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Exhaust System Inspection Notice in Cautions and Notices.
    NOTE: Refer to Flex Decoupler Notice in Cautions and Notices.
  3. With the aid of an assistant, raise the exhaust system into position.
  4. Install the exhaust system (muffler) nuts.
    5. Fig 3: Tail Pipe Hangers
    GM1559372Courtesy of GENERAL MOTORS CORP.
  5. Install the muffler to the muffler rear hangers.
    6. Fig 4: Muffler Rear Hanger
    GM1559373Courtesy of GENERAL MOTORS CORP.
  6. Install the muffler rear hanger to the hanger rod.
    7. Fig 5: Identifying Muffler Pipes At Left And Right Side Catalytic Converters
    GM1224063Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  7. Install the exhaust pipe nuts.

    Tighten:  Tighten the nuts to 22 N.m (16 lb ft).

    8. Fig 6: Floorpan Brace
    GM772383Courtesy of GENERAL MOTORS CORP.
  8. Install the floor panel tunnel brace to the floor panel.
  9. Install the floor panel tunnel brace bolts.

    Tighten:  Tighten the floor panel tunnel brace bolts to 25 N.m (18 lb ft).

    10. Fig 7: View Of HO2S Electrical Connector, Sensor 2 (Bank 1 Shown, Bank 2 Similar)
    GM1201222Courtesy of GENERAL MOTORS CORP.
  10. Connect the left and right bank 2 HO2S electrical connectors (bank 1 shown, bank 2 similar).
  11. Install the HO2S wiring harnesses to the transmission case.
  12. Lower the vehicle.
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