Sierra 1500 4WD V8-5.3L VIN Z Flex Fuel (2005)
10. Loosen the valve rocker arm cover bolts.
11. Remove the valve rocker arm cover.
12. Remove and discard the old gasket (1).
13. If required, clean and inspect the rocker arm cover.
Installation Procedure
Important:
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All gasket surfaces should be free of oil an/or other foreign material during assembly.
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DO NOT reuse the valve rocker arm cover gasket.
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If the PCV valve grommet has been removed from the rocker cover, install a NEW grommet during assembly.
1. Install a NEW rocker cover gasket (1).
