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Home >> Chevrolet >> 2004 >> Tracker RWD >> Repair and Diagnosis >> Engine Mechanical >> Engine Exhaust System >> Repair Instructions >> Front Pipe Replacement (2.0L) >> Removal Procedure

Removal Procedure

  1. On California 2.0L engine, remove 5 upper exhaust manifold heat shield bolts.
  2. Remove the upper exhaust manifold heat shield.
  3. Remove 3 exhaust manifold to front pipe nuts (1).
  4. On all, raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  5. On California 2.0L engine, remove the heated oxygen sensor (HO2S) 2. Refer to Heated Oxygen Sensor Replacement - Position 2 (w/PUP-TWC) or Heated Oxygen Sensor Replacement - Position 2 (w/oPUP-TWC) in Engine Controls-2.0L.
    6. Fig 1: View Of Exhaust Manifold To Front Pipe Nuts
    GM1178073Courtesy of GENERAL MOTORS CORP.
  6. Remove 1 bolt and 1 nut from the exhaust manifold pipe bracket.
    7. Fig 2: View Of Exhaust Manifold Pipe Bracket, Bolt & Nut
    GM1178081Courtesy of GENERAL MOTORS CORP.
  7. On all, remove 2 bolts and the front pipe/TWC assembly (2) from the exhaust manifold (1).
    8. Fig 3: View Of Front Pipe/TWC Assembly & Exhaust Manifold
    GM185746Courtesy of GENERAL MOTORS CORP.
  8. On non-California 2.0L engine, remove the electrical connector at the heated oxygen sensor (H02S2) (6).
    9. Fig 4: Exploded View Of Exhaust System
    GM492870Courtesy of GENERAL MOTORS CORP.
  9. On all, remove two nuts and the front pipe/TWC assembly (1) from the resonator/muffler/tail pipe assembly.
  10. Remove the hanger supporting the TWC.
  11. Remove the front pipe/TWC assembly (1) from the vehicle.
  12. Clean the gasket and the seal mating surfaces.
    13. Fig 5: View Of Resonator/Muffler/Tail Pipe Assembly
    GM166026Courtesy of GENERAL MOTORS CORP.
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