GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Impala 🢒 Engine 🢒 Engine Exhaust 🢒 Exhaust Seal Replacement

Removal Procedure

    Object Number: 1618333 Size: SH
  1. Remove the catalytic converter. Refer to Catalytic Converter Replacement .
  2. Remove and discard the exhaust manifold pipe gasket (2), if equipped with regular production options (RPOs) LZE/LZ9.

    3. Object Number: 1553053 Size: SH
  3. Remove and discard the exhaust manifold pipe gasket (1), if equipped with RPO LS4.

    4. Object Number: 1553050 Size: SH
  4. Remove and discard the catalytic converter to muffler gasket (2), if equipped with RPO LZE.

    5. Object Number: 1618336 Size: SH
  5. Remove and discard the catalytic converter to muffler seal, if equipped with RPOs LS4/LZ9.

Installation Procedure

    Object Number: 1618336 Size: SH
  1. Install a NEW catalytic converter to muffler seal, if equipped with RPOs LS4/LZ9.

    2. Object Number: 1553050 Size: SH
  2. Install a NEW catalytic converter to muffler gasket (2), if equipped with RPO LZE.

    3. Object Number: 1553053 Size: SH
  3. Install a NEW exhaust manifold pipe gasket (1), if equipped with RPO LS4.

    4. Object Number: 1618333 Size: SH
  4. Install a NEW exhaust manifold pipe gasket (2), if equipped with RPOs LZE/LZ9.
  5. Install the catalytic converter. Refer to Catalytic Converter Replacement .