Sierra 1500 4WD V6-4.3L (2008)
7. Remove the positive crankcase ventilation (PCV) valve hose from the valve cover and rocker cover.
8. Remove the rocker arm cover bolts.
9. Remove and discard the rocker arm cover bolt grommets, if necessary.
10. Remove the rocker arm cover.
11. Remove and discard the rocker arm cover gasket.
12. Clean and inspect the rocker arm cover, if necessary. Refer to Valve Rocker Arm Cover Cleaning and Inspection (See: Service and
Repair/Overhaul) .
Installation Procedure
Important: Do not reuse the rocker cover gasket or the rocker arm cover bolt grommets.
