GM Service Manual Online
For 1990-2009 cars only

Exhaust Flexible Pipe Replacement LY7

Removal Procedure


    Object Number: 1836990  Size: SH
  1. Remove the right and left catalytic converter to exhaust flexible pipe nuts.
  2. Remove the flexible pipe insulator from the pipe hanger.

  3. Object Number: 1920231  Size: SH
  4. Loosen the exhaust muffler clamps (1).

  5. Object Number: 1920234  Size: SH
  6. Separate the exhaust flexible pipe (2) from the catalytic converters.
  7. Remove the exhaust flexible pipe from the muffler (3).
  8. Remove and discard the catalytic converter to flexible pipe gaskets (1).

Installation Procedure


    Object Number: 1920234  Size: SH
  1. Install the exhaust flexible pipe (2) to the muffler (3).
  2. Insert NEW catalytic converter to flexible pipe gaskets (1) between the catalytic converters and the exhaust flexible pipe.
  3. Install the exhaust flexible pipe to the catalytic converters.
  4. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1920231  Size: SH
  5. Tighten the exhaust muffler clamps (1) to 5 N·m (44 lb in).

  6. Object Number: 1836990  Size: SH
  7. Install the flexible pipe insulator to the pipe hanger.
  8. Install the right and left catalytic converter to exhaust flexible pipe nuts and tighten to 25 N·m (18 lb ft).