Sierra 1500 2WD V6-4.3L VIN X (2004)
3. Important: To assist in installing the exhaust manifold and gasket to the engine, tabs on a NEW exhaust manifold gasket will hold the gasket and
bolts in place.
Install NEW exhaust manifold gaskets to the exhaust manifold.
4. Ensure that the exhaust manifold bolts, and plug wire shields are held in place by the tabs on the exhaust manifold gaskets.
5. Install the exhaust manifold and plug wire shields.
6. If reusing the old fasteners, apply threadlock GM P/N 12345493, (Canadian P/N 10953488), or equivalent to the threads of the exhaust manifold
bolts.
7. Install the exhaust manifold bolts.
Tighten the bolts to 30 Nm (22 ft. lbs.).
8. Install the spark plugs.
9. Position the spark plug wire retainer to the engine.
10. Loosely install the spark plug wire retainer bolt.
11. Connect the spark plug wires to the spark plugs.
12. Install the oil level indicator tube.
13. Tighten the spark plug wire retainer bolt.
Tighten the bolt to 12 Nm (106 inch lbs.).
