Service manual

6. Apply sealant GM P/N United States 12346004,
GM P/N Canada 10953480, or equivalent, to the
threads of the cylinder head bolts.
Notice: Refer to Fastener Notice in Cautions and
Notices.
7. Install the cylinder head bolts.
Tighten
Tighten the bolts in sequence on the first pass to
30 N·m (22 lb ft).
8. Use the
J 36660-A in order to tighten the cylinder
head bolts in sequence on the final pass.
Tighten
• Tighten the long bolts (1, 2, 5, 6, 9, 10, and 13)
on the final pass in sequence to 75 degrees.
• Tighten the medium bolts (14 and 17) on the
final pass in sequence to 65 degrees.
• Tighten the short
bolts (3, 4, 7, 8, 11, 12, 15, and 16) on the final
pass in sequence to 55 degrees.
9. Measure the NEW spark plugs for the proper gap.
Adjust the spark plug gap if necessary.
Specification
Spark plug gap to 1.52 mm (0.060 in)
10. Install the NEW spark plugs.
Tighten
• Tighten the spark plugs for a USED cylinder
head to 15 N·m (11 lb ft).
• Tighten the spark plugs for the initial
installation of a NEW cylinder head to
30 N·m (22 lb ft).
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Engine Engine Mechanical - 5.0L and 5.7L 6-125
2002 - Unit Repair (May 25, 2001)