Exhaust Manifold Replacement - Right Side for Cadillac CTS 2008

Caution: Refer to Exhaust Service Caution in the Preface section.

Caution: Refer to Protective Goggles and Glove Caution in the Preface section.

1. Remove the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement - Right Side .



2. Remove the catalytic converter nuts.



3. Remove the exhaust manifold bolts.
4. Remove the exhaust manifold and discard the exhaust manifold gasket.
5. If reusing the exhaust manifold, clean and inspect the exhaust manifold sealing surfaces. Refer to Exhaust Manifold Cleaning and Inspection - Right Side .

Important : Inspect the catalytic converter seal/heat shield sealing surface. Replace the seal/heat shield if the sealing surface is worn or damaged.




1. Install a NEW exhaust manifold gasket to the exhaust manifold.
2. Install the exhaust manifold with the gasket to the cylinder head and the catalytic converter.

Notice: Refer to Fastener Notice in the Preface section.

3. Install the exhaust manifold bolts.

Tighten
Tighten the exhaust manifold bolts in sequence to 20 N·m  (15 lb ft).




4. Install the catalytic converter nuts.

Tighten
Tighten the catalytic converter nuts to 50 N·m  (37 lb ft).

5. Install the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement - Right Side .
6. Inspect the exhaust system for leaks.