GM Service Manual Online
For 1990-2009 cars only

Turbocharger Exhaust Pipe Replacement 6.6L

Removal Procedure


    Object Number: 1875237  Size: SH
  1. Remove the glow plug control module and both brackets. Refer to Glow Plug Control Module Replacement.
  2. Remove the exhaust gas recirculation (EGR) valve cooler. Refer to Exhaust Gas Recirculation Valve Cooler Replacement.
  3. Remove the turbocharger upper heat shield bolts and shield.

  4. Object Number: 1875240  Size: SH
  5. Loosen the turbocharger exhaust pipe to turbocharger clamp bolt (1).
  6. Remover the catalytic converter. Refer to Catalytic Converter Replacement.

  7. Object Number: 702776  Size: SH
  8. Perform the following steps working through the wheelhouse opening, Remove the transmission fluid fill tube to bellhousing nuts.
  9. Position the transmission fluid fill tube to the right side of the vehicle. The tube does not require removal from the transmission.

  10. Object Number: 1875243  Size: SH
  11. Remove the turbocharger exhaust pipe heat shield bolts and shield.

  12. Object Number: 1875245  Size: SH
  13. Remove the turbocharger exhaust pipe to bracket bolt (1).
  14. Remove the turbocharger exhaust pipe.

Installation Procedure


    Object Number: 1875245  Size: SH
  1. Install the turbocharger exhaust pipe into the clamp and position the pipe flat against the turbocharger.
  2. Loosely install the turbocharger exhaust pipe to bracket bolt (1).
  3. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1875243  Size: SH
  4. Position the turbocharger exhaust pipe heat shield and install the heat shield bolts.
  5. Tighten
    Tighten the bolts to 10 N·m (89 lb ft).


    Object Number: 702776  Size: SH
  6. Position the transmission fluid fill tube.
  7. Install the transmission fluid fill tube to bellhousing nuts.
  8. Tighten
    Tighten the nuts to 18 N·m (13 lb ft).


    Object Number: 1875240  Size: SH

    Note: Prior to tightening the turbocharger exhaust clamp, ensure that the turbocharger exhaust pipe is inserted into the clamp.

  9. Tighten the turbocharger exhaust pipe to turbocharger clamp bolt (1).
  10. Tighten
    Tighten the bolt to 15 N·m (11 lb ft).

  11. Install the catalytic converter. Refer to Catalytic Converter Replacement.
  12. Tighten the turbocharger exhaust pipe to bracket bolt.
  13. Tighten
    Tighten the bolt to 34 N·m (25 lb ft).


    Object Number: 1875237  Size: SH
  14. Install the turbocharger upper heat shield and bolts.
  15. Tighten
    Tighten the bolts to 10 N·m (89 lb in).

  16. Install the EGR valve cooler. Refer to Exhaust Gas Recirculation Valve Cooler Replacement.
  17. Install the glow plug control module and both brackets. Refer to Glow Plug Control Module Replacement.