Exhaust Manifold Installation

Exhaust Manifold Installation





1. Install a new exhaust manifold gasket.





2. Install the exhaust manifold.
3. Add threadlock GM P/N 12345493 (Canadian P/N 10953488) to the exhaust manifold bolt threads.
4. Install the exhaust manifold bolts.





5. Notice: Refer to Fastener Notice in Service Precautions.

Tighten the exhaust manifold bolts in sequence.
Tighten the exhaust manifold bolts in sequence to 20 Nm (15 ft. lbs.). Repeat bolt tightening in sequence 2 additional passes.





6. Install the exhaust manifold heat shield studs, if required.
Tighten the exhaust manifold heat shield studs to 10 Nm (89 inch lbs.).





7. Install the exhaust manifold heat shield.
8. Add anti-seize GM P/N 12371386 (Canadian P/N 993128) to the exhaust manifold heat shield nuts.
9. Install the exhaust manifold heat shield nuts.
Tighten the exhaust manifold heat shield nuts to 10 Nm (89 inch lbs.).