C 1500 Yukon XL 2WD V8-8.1L VIN G (2001)
4. Coat the valve rocker arm and valve rocker arm ball bearing surfaces with prelube GM P/N 1052376 or equivalent.
5. Install the valve rocker arms, the valve rocker arm balls, and the valve rocker arm nuts.
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Tighten the valve rocker arm nuts slowly to 25 Nm (18 ft. lbs.) while guiding the tips of the rocker arms over the tips of the valves.
6. Install the valve rocker arm cover.
