GM Service Manual Online
For 1990-2009 cars only

Exhaust Manifold Replacement - Right 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: 1838537  Size: SH
  1. Remove the catalytic converter. Refer to Catalytic Converter Replacement - Right Side.
  2. Remove the exhaust manifold lower bolts.
  3. Lower the vehicle half way.

  4. Object Number: 1838540  Size: SH
  5. Remove the exhaust manifold upper bolts.

  6. Object Number: 1838541  Size: SH
  7. Remove the exhaust manifold.

  8. Object Number: 1838542  Size: SH
  9. Remove and discard the exhaust manifold gasket.

Installation Procedure


    Object Number: 1836986  Size: SH
  1. Install one upper exhaust manifold bolt (1) to the exhaust manifold.
  2. Place the NEW exhaust manifold gasket onto the bolt.
  3. Position and install the exhaust manifold (with gasket) to the cylinder head.

  4. Object Number: 1838540  Size: SH
  5. Loosely install the remaining upper exhaust manifold bolts.
  6. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.

  7. Object Number: 1838537  Size: SH
  8. Loosely install the lower exhaust manifold bolts.
  9. Caution: Refer to Fastener Caution in the Preface section.

  10. Tighten the exhaust manifold bolts to 20 N·m (15 lb ft).
  11. Install the catalytic converter. Refer to Catalytic Converter Replacement - Right Side.