Silverado 3500 2WD V8-8.1L VIN G (2005)
6. Ensure the intake manifold gasket tabs align with the hole in the head gasket.
7. Ensure the intake manifold gasket tabs align with the slot in the intake manifold end seals.
8. Install the intake manifold.
9. Apply threadlock, GM P/N 12345382 (Canadian P/N 10953489), or equivalent to a minimum of eight threads of the intake manifold bolts.
10. Install the intake manifold bolts.
11. Notice: Refer to Fastener Notice in Service Precautions.
Tighten the intake manifold bolts in the sequence shown, using four passes.
1. Tighten the bolts a first pass to 5 Nm (44 inch lbs.).
2. Tighten the bolts a second pass to 8 Nm (71 inch lbs.).
3. Tighten the bolts a third pass to 12 Nm (106 inch lbs.).
4. Tighten the bolts a final pass to 15 Nm (11 ft. lbs.).
