Silverado 3500 4WD V8-6.0L VIN U (2004)
19. Remove the positive crankcase ventilation (PCV) hose.
20. Loosen the valve rocker arm cover bolts.
21. Remove the valve rocker arm cover.
19. Remove the positive crankcase ventilation (PCV) hose.
20. Loosen the valve rocker arm cover bolts.
21. Remove the valve rocker arm cover.