GM Service Manual Online
For 1990-2009 cars only

Turbocharger Exhaust Pipe Replacement 6.6L (LMM)

Removal Procedure


    Object Number: 1862415  Size: SH
  1. Remove the engine cover. Refer to Engine Cover Replacement.
  2. Drain the cooling system. Refer to Cooling System Draining and Filling.
  3. Remove the exhaust gas recirculation (EGR) cooler pipe bolt.
  4. Remove the transmission fluid fill tube to bell housing nut.
  5. Position the transmission fill tube aside. The tube does not require removal from the transmission.

  6. Object Number: 1862359  Size: SH
  7. Reposition the EGR cooler pipe clamp (1) and remove the EGR cooler pipe hose from the EGR cooler tube.

  8. Object Number: 1862416  Size: SH
  9. Reposition the EGR cooler pipe (4) out of the way.
  10. Remove the EGR valve adapter pipe bracket bolts (1).
  11. Remove the EGR valve adapter pipe bracket (2) and turbocharger heat shield (3).

  12. Object Number: 1862848  Size: SH
  13. Remove the turbocharger exhaust heat shield bolts.
  14. Remove the turbocharger exhaust heat shield.

  15. Object Number: 1862849  Size: SH
  16. Loosen the turbocharger exhaust pipe clamp (1).

  17. Object Number: 1862851  Size: SH
  18. Loosen the turbocharger exhaust pipe to catalytic converter pipe clamp (1). Position the clamp onto the catalytic converter pipe.

  19. Object Number: 1862850  Size: SH
  20. Remove the turbocharger exhaust pipe to right exhaust pipe bracket bolt (2).
  21. Remove the turbocharger exhaust pipe and clamp (1).

Installation Procedure


    Object Number: 1862850  Size: SH
  1. Place the turbocharger exhaust pipe into position and install the exhaust pipe clamp (1). Tighten the clamp until snug.
  2. Caution: Refer to Fastener Caution in the Preface section.

  3. Install the turbocharger exhaust pipe to right exhaust pipe bracket bolt (2) and tighten to 34 N·m (25 lb ft).

  4. Object Number: 1862849  Size: SH
  5. Tighten the turbocharger exhaust pipe clamp (1) and tighten to 15 N·m (11 lb ft).

  6. Object Number: 1862851  Size: SH
  7. Position the turbocharger exhaust pipe to catalytic converter pipe clamp (1) and tighten to 40 N·m (30 lb ft).

  8. Object Number: 1862848  Size: SH
  9. Position the turbocharger exhaust heat shield.
  10. Install the turbocharger exhaust heat shield bolts and tighten to 8 N·m (71 lb in).

  11. Object Number: 1862416  Size: SH
  12. Install the turbocharger heat shield (3) and EGR valve adapter pipe bracket (2).
  13. Install the EGR valve adapter pipe bracket bolts (1).
  14. Position the EGR cooler pipe (4).

  15. Object Number: 1862359  Size: SH
  16. Install the EGR cooler pipe hose to the EGR cooler tube and Reposition the EGR cooler pipe clamp (1).

  17. Object Number: 1862415  Size: SH
  18. Position the transmission fill tube.
  19. Install the transmission fluid fill tube to bell housing nut and tighten to 18 N·m (13 lb ft).
  20. Install the EGR cooler pipe bolt and tighten to 9 N·m (80 lb in).
  21. Fill the cooling system. Refer to Cooling System Draining and Filling.
  22. Install the engine cover. Refer to Engine Cover Replacement.