Catalytic Converter Replacement - Left Side

Catalytic Converter Replacement - Left Side (LY7)

Removal Procedure

Caution: Refer to Exhaust Service Caution .

Caution: Refer to Protective Goggles and Glove Caution .




1. Remove the exhaust manifold heat shield.
2. Remove the left catalytic converter to exhaust manifold nuts (1).




3. Remove the bank 2 sensor 2 connector position assurance (CPA) retainer.
4. Disconnect the bank 2 sensor 2 heated oxygen sensor (HO2S) electrical connector (3) from the engine wiring harness electrical connector (3).




5. Remove the left catalytic converter (3) to right catalytic converter (1) nuts (2).




6. Remove the left catalytic converter from the vehicle.
7. Remove and discard the catalytic converter to exhaust manifold gasket (2).
8. Remove and discard the left catalytic converter to right catalytic converter gasket (1).

Installation Procedure




1. Install a NEW catalytic converter gasket (2) onto the catalytic converter.
2. Install the catalytic converter to the vehicle.
3. Install a NEW left catalytic converter to right catalytic converter gasket (1) between the converter pipes.





Notice: Refer to Fastener Notice .

4. Install the left catalytic converter to right catalytic converter nuts.

Tighten the nuts to 25 N.m (18 lb ft).




5. Connect the bank 2 sensor 2 HO2S electrical connector (3) to the engine wiring harness electrical connector (2).
6. Install the bank 2 sensor 2 CPA retainer.




7. Install the left catalytic converter to exhaust manifold nuts (1).

Tighten the nuts to 45 N.m (33 lb ft).

8. Install the exhaust manifold heat shield.