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1. Install the NEW exhaust manifold gasket.
2. Install the exhaust manifold.
3. Install the spark plug wire shields.
4. Apply threadlock GM P/N 12345493 or equivalent to the threads of the exhaust manifold bolts.
5. Install the exhaust manifold bolts.
5.1. Tighten the exhaust manifold bolts on the first pass to 15 Nm (11 ft. lbs.).
5.2. Tighten the exhaust manifold bolts on the final pass to 30 Nm (22 ft. lbs.).

NOTICE: Refer to Fastener Notice in Service Precautions.





6. Install the spark plug wire supports and bolts.
- Tighten the bolts to 12 Nm (106 inch lbs.).

7. Install the spark plug wires onto the spark plugs.