C 1500 Suburban 2WD V8-5.3L VIN Z Flex Fuel (2002)
3.1.
Tighten the exhaust manifold bolts a first pass to 15 Nm (11 ft. lbs.). Tighten the exhaust manifold bolts beginning with the center two bolts.
Alternate from side-to-side, and work toward the outside bolts.
3.2.
Tighten the exhaust manifold bolts a final pass to 25 Nm (18 ft. lbs.). Tighten the exhaust manifold bolts beginning with the center two
bolts. Alternate from side-to-side, and work toward the outside bolts.
4. Using a flat punch, bend over the exposed edge of the exhaust manifold gasket at the rear of the left cylinder head.
5. Raise the vehicle.
6. Install the exhaust manifold pipe nuts.
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Tighten the nuts to 50 Nm (37 ft. lbs.).
7. Lower the vehicle.
8. Install the spark plugs. Refer to Spark Plug Replacement in Engine Controls -4.8L, 5.3L, and 6.OL.
9. Install the ignition coils. Refer to Ignition Coil(s) Replacement in Engine Controls - 4.8L, 5.3L, and 6.OL.
