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Home >> Cadillac >> 2007 >> CTS V >> Repair and Diagnosis >> Engine Mechanical >> Engine Exhaust System >> Repair Instructions >> Exhaust System Replacement (LS2) >> Installation Procedure

Installation Procedure

    Fig 1: View Of Exhaust System Components
    GM786659Courtesy of GENERAL MOTORS CORP.
  1. While the exhaust system is on the floor complete the following:
    1. Apply a soapy solution to the following in order to ease the installation of the hangers:
      • The inner diameter of the front exhaust hangers (2)
      • The exhaust pipe hanger rods (3)
      • The inner diameter of the tail pipe hangers
      • The tail pipe hanger rods (1)
    2. Press the front exhaust hangers over the exhaust pipe hanger rods.
  2. Place NEW seals on the catalytic converter flanges.
    3. NOTE: Refer to Exhaust System Inspection Notice .
    Fig 2: View Of Exhaust System
    GM1215598Courtesy of GENERAL MOTORS CORP.
  3. With the aid of an assistant, raise the exhaust system into position, aligning the exhaust pipe flanges with the studs located in the rear of the catalytic converters.
  4. Finger tighten the exhaust pipe nuts to the catalytic converter studs.
    5. Fig 3: Locating Tail Pipe Hangers
    GM772379Courtesy of GENERAL MOTORS CORP.
  5. Press the tail pipe hangers (1) over the tail pipe hanger rods.
    6. Fig 4: Locating Front Exhaust Hangers
    GM772376Courtesy of GENERAL MOTORS CORP.
  6. Press the front exhaust hangers (1) over the rear suspension hanger rods.
    7. NOTE: Refer to Fastener Notice .
  7. Tighten the exhaust pipe nuts.

    Tighten:  Tighten the nuts to 30 N.m (22 lb ft).

    8. Fig 5: Identifying Floor Panel Tunnel Brace
    GM772383Courtesy of GENERAL MOTORS CORP.
  8. Position the floor panel tunnel brace to the floor panel.
  9. Install the 2 bolts securing the floor panel tunnel brace to the floor panel.

    Tighten:  Tighten the bolts to 25 N.m (18 lb ft).

  10. Lower the vehicle.
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