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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1054 (Engine Exhaust System) >> Repair Instructions >> Turbocharger Exhaust Pipe Replacement (6.6L (LB7) Engine) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Loosen the exhaust manifold pipe clamp.
    Fig 1: View Of Turbocharger Exhaust Pipe & Clamp
    GM668379Courtesy of GENERAL MOTORS CORP.
  3. Slide the exhaust pipe clamp up onto the exhaust pipe.
    4. Fig 2: Exhaust Muffler Nuts (6.0L, 6.6L, and 8.1L Engines)
    GM694338Courtesy of GENERAL MOTORS CORP.
  4. Remove the exhaust muffler nuts.
    5. Fig 3: Exhaust Manifold Pipe Hanger And Insulator (6.0L, 6.6L, and 8.1L Engines)
    GM694896Courtesy of GENERAL MOTORS CORP.
  5. Slide the exhaust manifold pipe hanger from the insulator.
  6. Remove the exhaust manifold pipe from the vehicle.
    7. Fig 4: View Of Fill Tube To Bellhousing Nuts
    GM702776Courtesy of GENERAL MOTORS CORP.
  7. If equipped with an automatic transmission, remove the transmission fluid fill tube to bellhousing nuts.
  8. Position the transmission fluid fill tube to the right side of the vehicle. The tube does not require removal from the transmission.
    9. Fig 5: View Of Right Exhaust Pipe To Exhaust Manifold & Turbocharger Bolts (6.6L (LB7) Engine)
    GM777476Courtesy of GENERAL MOTORS CORP.
  9. Remove the right exhaust pipe to exhaust manifold (1) bolts.
    10. Fig 6: Heat Shield To The Exhaust Outlet Bolts (6.6L (LB7) Engine)
    GM668425Courtesy of GENERAL MOTORS CORP.
  10. Remove the lower bolt (2) retaining the heat shield to the exhaust outlet.
  11. Lower the vehicle.
    12. Fig 7: Identifying Hood Hinge Normal And Service Position Bolt Holes
    GM310799Courtesy of GENERAL MOTORS CORP.
  12. Move the hood to the service position by moving the hood hinge bolts (1) to the service position (2).
    13. Fig 8: View Of Upper Intake Manifold Cover, Outlet Duct & Clamp
    GM813243Courtesy of GENERAL MOTORS CORP.
  13. Loosen the outlet duct clamp at the upper intake manifold cover.
  14. Remove the upper intake manifold cover from the outlet duct.
  15. Remove the upper intake manifold cover.
    16. Fig 9: Turbocharger Heat Shield (6.6L (LB7) Engine)
    GM660382Courtesy of GENERAL MOTORS CORP.
  16. Remove the heat shield to turbocharger bolts.
  17. Remove the turbocharger heat shield.
    18. Fig 10: Heat Shield To The Exhaust Outlet Bolts (6.6L (LB7) Engine)
    GM668425Courtesy of GENERAL MOTORS CORP.
  18. Remove the remaining bolts (1, 3) for the exhaust outlet heat shield.
  19. Remove the exhaust outlet heat shield.
    20. Fig 11: Turbocharger Exhaust Pipe Bolts/Nuts (6.6L (LB7) Engine)
    GM654540Courtesy of GENERAL MOTORS CORP.
  20. Remove the turbocharger exhaust pipe bolts/nuts.
  21. Remove the turbocharger exhaust pipe and gasket from the turbocharger.
  22. Position the turbocharger exhaust pipe to the side in order to access the right exhaust pipe to turbocharger bolts.

    The turbocharger exhaust pipe cannot be removed until the right exhaust pipe is removed.

    23. Fig 12: View Of Right Exhaust Pipe To Exhaust Manifold & Turbocharger Bolts (6.6L (LB7) Engine)
    GM777476Courtesy of GENERAL MOTORS CORP.
  23. Remove the right exhaust pipe to turbocharger bolts (2).
  24. Remove the right exhaust pipe and gaskets.
    25. Fig 13: Turbocharger Exhaust Pipe (6.6L (LB7) Engine)
    GM786908Courtesy of GENERAL MOTORS CORP.
  25. Remove the turbocharger exhaust pipe out the bottom of the vehicle.
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