Exhaust Pipe Gasket: Service and Repair

Exhaust Seal Replacement

Removal Procedure





1. Remove the catalytic converter. Refer to Catalytic Converter Replacement (LS4) (Service and Repair)Catalytic Converter Replacement (RPOs LZE/LZ4/LZ8) (Service and Repair) .
2. Remove and discard the exhaust manifold pipe gasket (2), if equipped with regular production options (RPOs) 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 RPOs LS4/LZ9.



Installation Procedure





1. Install a NEW catalytic converter to muffler seal, if equipped with RPOs 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 RPOs LZE/LZ9.
5. Install the catalytic converter. Refer to Catalytic Converter Replacement (LS4) (Service and Repair)Catalytic Converter Replacement (RPOs LZE/LZ4/LZ8) (Service and Repair) .