GM Service Manual Online
For 1990-2009 cars only

Exhaust Pipe Replacement - Left Side 6.6L (LLY) Engine

Removal Procedure


    Object Number: 707396  Size: SH
  1. Remove the right wheelhouse panel. Refer to Wheelhouse Panel Replacement in Body Front End.
  2. Remove the exhaust heat shield nuts (2) and heat shield (3) from the dash panel.

  3. Object Number: 1334829  Size: SH
  4. Remove the left exhaust pipe heat shield bolts.
  5. Remove the heat shield.

  6. Object Number: 721427  Size: SH
  7. Remove the exhaust pipe bolts in the proper sequence.

  8. Object Number: 1334832  Size: SH
  9. Remove the exhaust pipe and gaskets.
  10. Discard the gaskets.

Installation Procedure


    Object Number: 1334832  Size: SH
  1. Position the exhaust pipe with a NEW gasket to the turbocharger. Align the tab on the gasket at the turbocharger to face inward.
  2. Loosely install the bolts.
  3. Position the exhaust pipe with a NEW gasket to the exhaust manifold. Align the tab on the gasket to face outward.
  4. Loosely install the bolts.
  5. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 721436  Size: SH
  6. Tighten the exhaust pipe bolts in the sequence shown.
  7. Tighten
    Tighten the bolts to 53 N·m (39 lb ft).


    Object Number: 1334829  Size: SH
  8. Install the exhaust pipe heat shield bolts.
  9. Tighten
    Tighten the bolts to 8 N·m (71 lb in).


    Object Number: 707396  Size: SH
  10. Install the left side exhaust heat shield (3) at the dash panel.
  11. Install the heat shield nuts (2).
  12. Tighten
    Tighten the nuts to 9 N·m (80 lb in).

  13. Install the right wheelhouse panel. Refer to Wheelhouse Panel Replacement in Body Front End.