GM Service Manual Online
For 1990-2009 cars only

Exhaust Manifold Replacement - Left Side LY7

Removal Procedure

    Warning: Refer to Exhaust Service Warning in the Preface section.

    Warning: Refer to Protective Goggles and Glove Warning in the Preface section.


    Object Number: 1840273  Size: SH
  1. Remove the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement - Left Side.
  2. Remove the oil level indicator. Refer to Oil Level Indicator Tube Replacement.
  3. Remove the catalytic converter to exhaust manifold nuts (1).

  4. Object Number: 1836987  Size: SH
  5. Remove the exhaust manifold bolts (1).
  6. Remove the exhaust manifold and gasket. Discard the gasket.

Installation Procedure


    Object Number: 1836987  Size: SH
  1. Install one exhaust manifold bolt to the exhaust manifold.
  2. Install the NEW exhaust manifold gasket onto the cylinder head and bolt.
  3. Install the exhaust manifold (with gasket) to the catalytic converter and the cylinder head.
  4. Caution: Refer to Fastener Caution in the Preface section.

  5. Install the remaining exhaust manifold bolts (1) and tighten to 20 N·m (15 lb ft).

  6. Object Number: 1840273  Size: SH
  7. Install the catalytic converter to exhaust manifold nuts (1) and tighten to 45 N·m (33 lb ft).
  8. Install the oil level indicator. Refer to Oil Level Indicator Tube Replacement.
  9. Install the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement - Left Side.
  10. Inspect for exhaust leaks.