Exhaust Manifold Replacement

Exhaust Manifold Replacement
Removal Procedure

Caution: Refer to Exhaust Service Caution in Service Precautions.

Caution: Refer to Protective Goggles and Glove Caution in Service Precautions.





1. Remove the exhaust seal.
2. Remove the exhaust manifold heat shield.
3. Remove the exhaust manifold bolts.
4. Remove the exhaust manifold.





5. Remove and discard the exhaust manifold gasket.
6. Clean and inspect the exhaust manifold. Refer to Exhaust Manifold Cleaning and Inspection.

Installation Procedure





1. Clean and apply threadlock GM P/N 12345493 (Canadian P/N 10953488) to the exhaust manifold bolt threads.
2. Position a NEW exhaust manifold gasket onto the cylinder head.





3. Position the exhaust manifold against cylinder head.
4. Install the exhaust manifold bolts.





Notice: Refer to Fastener Notice in Service Precautions.

5. Tighten the exhaust manifold bolts.
1. Tighten the bolts a first pass in sequence to 20 Nm (15 ft. lbs.).
2. Tighten the bolts a second pass in sequence to 20 Nm (15 ft. lbs.).
3. Tighten the bolts a final pass in sequence to 20 Nm (15 ft. lbs.).
6. Install the exhaust manifold heat shield.
7. Install the exhaust seal.