Seals and Gaskets: Service and Repair

Exhaust Seal Replacement
Removal Procedure





1. Remove the catalytic converter.
2. Remove and discard the exhaust manifold pipe gasket (2), if equipped with regular production options (RPO's) LZE/LZ9.





3. Remove and discard the exhaust manifold pipe gasket (1), if equipped with RPO LS4.





4. Remove and discard the catalytic converter to muffler gasket (2), if equipped with RPO LZE.





5. Remove and discard the catalytic converter to muffler seal, if equipped with RPO's LS4/LZ9.

Installation Procedure





1. Install a NEW catalytic converter to muffler seal, if equipped with RPO's LS4/LZ9.





2. Install a NEW catalytic converter to muffler gasket (2), if equipped with RPO LZE.





3. Install a NEW exhaust manifold pipe gasket (1), if equipped with RPO LS4.





4. Install a NEW exhaust manifold pipe gasket (2), if equipped with RPO's LZE/LZ9.
5. Install the catalytic converter.