Silverado 1500 2WD V6-4.3L VIN X (2004)
7. Install the intake manifold.
8. If reusing the old fasteners, apply threadlock GM P/N 12345382, (Canadian P/N 10953489), or equivalent to the threads of the intake manifold -
lower bolts.
9. Install the intake manifold - lower bolts.
10. Tighten the intake manifold - lower bolts in the sequence shown.
1. Tighten the bolts a first pass to 3 Nm (27 inch lbs.).
2. Tighten the bolts a second pass to 12 Nm (106 inch lbs.).
3. Tighten the bolts a final pass to 15 Nm (11 ft. lbs.).
Notice:
Proper lower intake manifold fastener tightening sequence and torque is critical. Always follow the tightening sequence, and torque the intake
manifold bolts using the 3 step method. Failing to do so may distort the crankshaft bearing bore alignment and cause damage to the crankshaft
bearings.
Notice: Refer to Fastener Notice in Service Precautions.
